emerson process management valve automation, inc. shafer ......shafer electric remote 2-way with...
TRANSCRIPT
Emerson Process Management Valve Automation, Inc.Shafer
Common Control Schematics
Manual Schematic .............................................................................. 4943-SElectric Remote 2-Way Schematic ..................................................... 4944-SElectric Remote 2-Way With Fail-Safe Schematic ............................. 8420-SElectric Remote 2-Way Schematic ..................................................... 4924-S2-Way Pneumatic Schematic ............................................................. 4984-SLow Pressure Shutoff Schematic ....................................................... 8335-SHigh Pressure Shutoff Schematic ....................................................... 8339-SHigh-Low Pressure Shutoff Schematic ............................................... 8336-SHigh-Close and Low-Open Schematic ............................................... 5802-SEmergency Shutdown Schematic....................................................... 8298-SEmergency Shutdown Schematic....................................................... 8421-SEmergency Shutdown and Electric Remote 2-Way Schematic .......... 8357-SAutomatic Linebreak Schematic ......................................................... 8354-SAutomatic Linebreak and Low Pressure Shutoff Schematic ............... 8333-SLineguard Electronic Linebreak Schematic ........................................ 7802-SLinear Manual Schematic ................................................................... 5016-SLinear Electric Remote 2-Way Schematic .......................................... 5043-SLinear 2-Way Pneumatic Schematic .................................................. 7004-SLinear 2-Way Pneumatic with Fail-Safe Schematic ............................ 9223-SLinear Automatic Linebreak and Electric Remote 2-Way Schematic . 8408-SLinear Lineguard Electronic Linebreak Schematic ............................. 9042-S
SH
AFE
R
1.
Sha
fer O
pera
tor (
show
n in
ope
n po
sitio
n)
10.
Gau
ge 2
. C
losi
ng G
as H
ydra
ulic
Tan
k 11
. C
ontro
l Blo
ck 3
. O
peni
ng G
as H
ydra
ulic
Tan
k 12
. P
ower
Stra
iner
(140
mic
ron)
4. Hand Pum
p 13. Control Pilot P
iston (with orifice)
5.
Spe
ed C
ontro
l (op
tiona
l) 14
. M
anua
l Ope
ratio
n (h
andl
es n
ot s
how
n)
6.
Pow
er S
tora
ge T
ank
15.
Pow
er P
oppe
t
7.
Dra
in V
alve
O
PTI
ON
AL
16.
Pow
er S
huto
ff Va
lve
(opt
iona
l) 8
. R
elie
f Val
ve
PA
CK
AG
E
9.
Che
ck V
alve
OP
EN
CLO
SE
15
3
169
1112
1310
PO
WE
R
EX
HA
US
T
14
76
8
2
CLO
SE
51
4
Man
ual S
chem
atic
4943
-S
SH
AFE
R
1.
Sha
fer O
pera
tor (
show
n in
ope
n po
sitio
n)
11.
Con
trol B
lock
2.
Ope
ning
Gas
Hyd
raul
ic T
ank
12.
Pow
er S
train
er (1
40 m
icro
n) 3
. C
losi
ng G
as H
ydra
ulic
Tan
k 13
. P
ilot S
train
er (2
5 m
icro
n) 4. Hand Pum
p 14. Control Pilot P
iston (with orifice)
5.
Spe
ed C
ontro
l (op
tiona
l) 15
. M
anua
l Ope
ratio
n (h
andl
es n
ot s
how
n)
6
. P
ower
Sto
rage
Tan
k 16
. P
ower
Pop
pet
7
. D
rain
Val
ve
OP
TIO
NA
L 17
. 2-
Way
Nor
mal
ly C
lose
d S
olen
oid
Valv
e 8
. R
elie
f Val
ve
PA
CK
AG
E
18.
2-W
ay N
orm
ally
Clo
sed
Sol
enoi
d Va
lve
9.
Che
ck V
alve
19
. P
ower
Shu
toff
Valv
e (o
ptio
nal)
10. G
auge
Elec
tric
Rem
ote
2-W
ay S
chem
atic
4944
-S
17
OP
EN
CLO
SE
16
2
199
1112
1410
PO
WE
R
EX
HA
US
T
15
76
8
3
CLO
SE
51
4
18
CP
CP
13
ELEC
TRIC
REM
OTE
2-W
AY F
EATU
RE
A.
Ene
rgiz
e so
leno
id (1
7) to
clo
se th
e op
erat
or.
B.
Ene
rgiz
e so
leno
id (1
8) to
ope
n th
e op
erat
or.
Th
e so
leno
ids
mus
t be
de-e
nerg
ized
at th
e en
d of
the
oper
ator
s st
roke
.
LEG
END
P - P
OW
ER
C -
CY
LIN
DE
R
SH
AFE
R
Elec
tric
Rem
ote
2-W
ay
With
Fai
l-Saf
e Sc
hem
atic
8420
-S
23 15 179
1112
1410
16
13
18
24
8
6 7
3
5
19
OP
EN
12
4
P
CP
EX
HA
US
T PO
WE
R
C
D
OP
EN
CLO
SE
22
E PC
21
20
ELEC
TRIC
REM
OTE
2-W
AY F
EATU
RE
A.
Ene
rgiz
e so
leno
ids
(22)
and
(23)
to c
lose
the
oper
ator
.B
. D
e-en
ergi
ze s
olen
oid
(22)
and
(23)
to o
pen
the
oper
ator
.
Sol
enoi
ds (2
3) m
ust b
e de
-ene
rgiz
ed a
t the
end
of t
he
op
erat
ors
clos
ing
stro
ke.
ELEC
TRIC
FA
ILSA
FE F
EATU
RE
Sol
enoi
d (2
2) is
con
stan
tly e
nerg
ized
ope
n. U
pon
loss
of
ele
ctric
, it c
lose
s an
d ve
nts
the
pilo
t of v
alve
(18)
and
ca
uses
the
oper
ator
to o
pen.
LEG
END
P - P
OW
ER
C
- C
YLI
ND
ER
E
- E
XH
AU
ST
D -
PIL
OT
1.
Sha
fer O
pera
tor (
show
n in
clo
sed
posi
tion)
15
. M
anua
l Ope
ratio
n (h
andl
es n
ot s
how
n) 2
. O
peni
ng G
as H
ydra
ulic
Tan
k 16
. P
ower
Pop
pet
3.
Clo
sing
Gas
Hyd
raul
ic T
ank
17.
Pow
er S
huto
ff Va
lve
(opt
iona
l) 4
. H
and
Pum
p 18
. 2-
Way
Nor
mal
ly O
pen,
Pilo
t Act
uate
d 5
. S
peed
Con
trol (
optio
nal)
Li
mit
Valv
e lo
cate
d an
d ac
tuat
ed
6.
Pow
er S
tora
ge T
ank
at
the
end
of th
e op
erat
ors
open
ing
stro
ke.
7.
Dra
in V
alve
O
PTI
ON
AL
19.
Ope
rato
r Rot
or 8
. R
elie
f Val
ve
PA
CK
AG
E
20.
Reg
ulat
or
9.
Che
ck V
alve
21
. R
elie
f Val
ve
10. G
auge
22
. 3-
Way
Nor
mal
ly C
lose
d S
olen
oid
Valv
e11
. C
ontro
l Blo
ck
23.
2-W
ay N
orm
ally
Clo
sed
Sol
enoi
d Va
lve
12. P
ower
Stra
iner
(140
mic
ron)
24
. M
echa
nica
l Act
uatin
g D
evic
e at
tach
ed
13. P
ilot S
train
er (2
5 m
icro
n)
to
the
top
of th
e op
erat
or ro
tor.
14. C
ontrol Pilot P
iston (with orifice)
SH
AFE
R
Elec
tric
Rem
ote
2-W
ay S
chem
atic
4924
-S
PO
WE
R
RE
TUR
N
10
5
14
9
7 8
6
11 15
16
28
26
2927
24
OP
EN
CLO
SE
CLO
SE
301
17
25
2423
2221
20
19
12
18
13
PC
PC
3 1.
Sha
fer O
pera
tor (
show
n in
ope
n po
sitio
n)
15.
Rel
ief V
alve
2.
Han
d P
ump
16.
By-
Pas
s Va
lve
3.
Res
ervo
ir Ta
nk
17.
Shu
toff
Valv
e fo
r Ret
urn
4.
Spe
ed C
ontro
l (op
tiona
l) 18
. P
ilot S
train
er (2
5 m
icro
n) 5
. A
ccum
ulat
or
19.
Pow
er P
oppe
t
6
. N
itrog
en T
ank
20.
Con
trol B
lock
7
. P
ress
ure
Sw
itch
21
. P
ower
Stra
iner
(140
mic
ron)
(low pressure nitrogen alarm)
22. Control Pilot P
iston (with orifice)
8.
Isol
atio
n Va
lve
for N
itrog
en T
ank
23.
Das
hpot
(use
d fo
r del
ayin
g co
ntro
l neu
traliz
atio
n) 9
. D
rain
Val
ve fo
r Nitr
ogen
Tan
k 24
. S
huttl
e Va
lve
10. N
itrog
en L
oadi
ng V
alve
25
. S
huto
ff Va
lve
for P
ower
11.
Rel
ief V
alve
26
. C
heck
Val
ve12
. Gau
ge
27.
Man
ual O
pera
tion
(han
dles
not
sho
wn)
13. G
auge
28
. 2-
Way
Nor
mal
ly C
lose
d S
olen
oid
Valv
e14
. Iso
latio
n Va
lve
for A
ccum
ulat
or
29.
2-W
ay N
orm
ally
Clo
sed
Sol
enoi
d Va
lve
30.
Isol
atio
n Va
lve
A.
Ene
rgiz
e so
leno
id (2
9) to
clo
se th
e op
erat
or.
B.
Ene
rgiz
e so
leno
id (2
8) to
ope
n th
e op
erat
or.
Th
e so
leno
ids
mus
t be
de-e
nerg
ized
at th
e en
d of
the
oper
ator
s st
roke
.
LEG
END
P - P
OW
ER
C -
CY
LIN
DE
R
SH
AFE
R
2-W
ay P
neum
atic
Sche
mat
ic
4984
-S
1.
Sha
fer O
pera
tor (
show
n in
ope
n po
sitio
n)
15.
Man
ual O
pera
tion
(han
dles
not
sho
wn)
2.
Ope
ning
Gas
Hyd
raul
ic T
ank
16
. P
ower
Pop
pet
3.
Clo
sing
Gas
Hyd
raul
ic T
ank
17
. P
ilot I
sola
tion
Valv
e 4
. H
and
Pum
p
18.
2-W
ay N
orm
ally
Clo
sed
Pilo
t Val
ve
5.
Spe
ed C
ontro
l (op
tiona
l)
19.
2-W
ay N
orm
ally
Clo
sed
Pilo
t Val
ve
6
. P
ower
Sto
rage
Tan
k
20.
2-W
ay N
orm
ally
Ope
n Li
mit
Valv
e 7
. D
rain
Val
ve
OP
TIO
NA
L
loca
ted
and
actu
ated
at t
he e
nd o
f 8
. R
elie
f Val
ve
PAC
KA
GE
th
e op
erat
ors
clos
ing
stro
ke.
9.
Che
ck V
alve
21.
2-W
ay N
orm
ally
Ope
n Li
mit
Valv
e10
. Gau
ge
loca
ted
and
actu
ated
at t
he e
nd o
f11
. C
ontro
l Blo
ck
the
oper
ator
s op
enin
g st
roke
.12
. Pow
er S
train
er (1
40 m
icro
n)
22
. P
ower
Isol
atio
n Va
lve
(opt
iona
l)13
. Pilo
t Stra
iner
(25
mic
ron)
23.
Mec
hani
cal A
ctua
ting
Dev
ice
atta
ched
14. C
ontrol Pilot P
iston (with orifice)
to the top of the operator rotor.
24
. O
pera
tor R
otor
CP
D
CP
OP
EN
CLO
SE
16
229
1112
1410
PO
WE
R
EX
HAU
ST
15
17
1318 19
D
CP
CP
2
6
8
3
CLO
SE
51
4
7
23
20 23 21
CLO
SIN
GP
ILO
T
OP
EN
ING
PIL
OT
24
LEG
END
P - P
OW
ER
C -
CY
LIN
DE
RD
- P
ILO
T
2-W
AY P
NEU
MAT
IC F
EATU
RE
A.
Pre
ssur
ize
the
open
ing
pilo
t to
open
the
oper
ator
.B
. P
ress
uriz
e th
e cl
osin
g pi
lot t
o cl
ose
the
oper
ator
.
SH
AFE
R
Low
Pre
ssur
e Sh
utof
f Sch
e-m
atic
8335
-S
C
D
15 179
1112
1410
16
20
23
22
21
18
19
8
6 7
3
5
13
CLO
SE
12
4
C
P
E PC
EX
HAU
ST PO
WE
R
OP
EN
CLO
SE
PIL
OT
20D
1.
Sha
fer O
pera
tor (
show
n in
ope
n po
sitio
n)
15.
Man
ual O
pera
tion
(han
dles
not
sho
wn)
2.
Ope
ning
Gas
Hyd
raul
ic T
ank
16.
Pow
er P
oppe
t 3
. C
losi
ng G
as H
ydra
ulic
Tan
k 17
. P
ower
Shu
toff
Valv
e (o
ptio
nal)
4.
Han
d P
ump
18.
2-W
ay N
orm
ally
Ope
n P
ilot A
ctua
ted
5.
Spe
ed C
ontro
l (op
tiona
l)
Lim
it Va
lve
loca
ted
and
actu
ated
at
6.
Pow
er S
tora
ge T
ank
th
e en
d of
the
oper
ator
s cl
osin
g st
roke
. 7
. D
rain
Val
ve
OP
TIO
NA
L 19
. M
echa
nica
l Act
uatin
g D
evic
e at
tach
ed
8.
Rel
ief V
alve
P
AC
KA
GE
to th
e to
p of
the
oper
ator
roto
r. 9
. C
heck
Val
ve
20.
Pilo
t Stra
iner
(25
mic
ron)
10. G
auge
21
. 3-
Way
Nor
mal
ly C
lose
d A
ir R
elay
Val
ve11
. C
ontro
l Blo
ck
22.
Reg
ulat
or12
. Pow
er S
train
er (1
40 m
icro
n)
23.
Rel
ief V
alve
13
. Ope
rato
r Rot
or
14. C
ontrol Pilot P
iston (with orifice)
LOW
PR
ESSU
RE
SHU
TOFF
FEA
TUR
E Va
lve
(21)
is c
onst
antly
trip
ped
open
. W
hen
the
pilo
t pre
ssur
e fa
lls to
the
low
trip
poi
nt o
f val
ve
(21)
it c
lose
s, v
ents
the
pilo
t of v
alve
(18)
and
ca
uses
the
oper
ator
to c
lose
.
LEG
END
P - P
OW
ER
C
- C
YLI
ND
ER
E
- E
XH
AU
ST
D -
PIL
OT
SH
AFE
R
Hig
h Pr
essu
re S
huto
ff Sc
he-
mat
ic
8339
-S
1.
Sha
fer O
pera
tor (
Sho
wn
in o
pen
posi
tion)
15
. M
anua
l Ope
ratio
n (h
andl
es n
ot s
how
n) 2
. O
peni
ng G
as H
ydra
ulic
Tan
k 16
. P
ower
Pop
pet
3.
Clo
sing
Gas
Hyd
raul
ic T
ank
17.
Pow
er S
huto
ff Va
lve
(opt
iona
l) 4
. H
and
Pum
p 18
. 2-
Way
Nor
mal
ly O
pen
Pilo
t Act
uate
d 5
. S
peed
Con
trol (
Opt
iona
l)
Lim
it Va
lve
loca
ted
and
actu
ated
at
6.
Pow
er S
tora
ge T
ank
th
e en
d of
the
oper
ator
s op
enin
g st
roke
. 7
. D
rain
Val
ve
OP
TIO
NA
L 19
. M
echa
nica
l Act
uatin
g D
evic
e A
ttach
ed
8.
Rel
ief V
alve
P
AC
KA
GE
to th
e to
p of
the
oper
ator
roto
r. 9
. C
heck
Val
ve
20.
Pilo
t Stra
iner
(25
mic
ron)
10
. Gau
ge
21.
3-W
ay N
orm
ally
Ope
n A
ir R
elay
Val
ve11
. C
ontro
l Blo
ck
22.
Reg
ulat
or12
. Pow
er S
train
er (1
40 m
icro
n)
23.
Rel
ief V
alve
13. O
pera
tor R
otor
14. C
ontrol Pilot P
iston (with orifice)
15 179
1112
1410
16
20
23
22
18
19
8
6 7
3
5
13
CLO
SE
12
4
C
EX
HA
US
T PO
WE
R
OP
EN
CLO
SE
PIL
OT
20
PD
21
E PC
D
HIG
H P
RES
SUR
E SH
UTO
FF F
EATU
RE
Whe
n th
e pi
lot p
ress
ure
rises
to th
e tri
p po
int o
f va
lve
(21)
it c
lose
s an
d ve
nts
the
pilo
t of v
alve
(1
8) a
nd c
ause
s th
e op
erat
or to
clo
se.
LEG
END
P - P
OW
ER
C
- C
YLI
ND
ER
E
- E
XH
AU
ST
D -
PIL
OT
SH
AFE
R
Hig
h-Lo
w P
ress
ure
Shut
off S
chem
atic
8336
-S
1.
Sha
fer O
pera
tor (
show
n in
ope
n po
sitio
n)
15.
Man
ual O
pera
tion
(han
dles
not
sho
wn)
2.
Ope
ning
Gas
Hyd
raul
ic T
ank
16.
Pow
er P
oppe
t 3
. C
losi
ng G
as H
ydra
ulic
Tan
k 17
. P
ower
Shu
toff
Valv
e (o
ptio
nal)
4.
Han
d P
ump
18.
2-W
ay N
orm
ally
Ope
n P
ilot A
ctua
ted
5.
Spe
ed C
ontro
l (op
tiona
l)
Lim
it Va
lve
loca
ted
and
actu
ated
at
6.
Pow
er S
tora
ge T
ank
th
e en
d of
the
oper
ator
s cl
osin
g st
roke
. 7
. D
rain
Val
ve
OP
TIO
NA
L 19
. M
echa
nica
l Act
uatin
g D
evic
e at
tach
ed
8.
Rel
ief V
alve
P
AC
KA
GE
to th
e to
p of
the
oper
ator
roto
r. 9
. C
heck
Val
ve
20.
Pilo
t Stra
iner
(25
mic
ron)
10. G
auge
21
. 3-
Way
Nor
mal
ly C
lose
d A
ir R
elay
Val
ve
11.
Con
trol B
lock
22
. R
egul
ator
12. P
ower
Stra
iner
(140
mic
ron)
23
. R
elie
f Val
ve13
. Ope
rato
r Rot
or
24.
3-W
ay N
orm
ally
Ope
n A
ir R
elay
Val
ve14. C
ontrol Pilot P
iston (with orifice)
C
PE
D
15 179
1112
1410
16
20
23
22
18
19
8
6 7
3
5
13CLO
SE
12
4
EX
HA
US
T PO
WE
R
OP
EN
CLO
SE
PIL
OT
20
24
C
D
E PE P
21
C
D HIG
H P
RES
SUR
E SH
UTO
FF F
EATU
RE
Whe
n th
e pi
lot p
ress
ure
rises
to th
e tri
p po
int o
f val
ve
(24)
, it c
lose
s an
d ve
nts
the
pilo
t of v
alve
(18)
and
ca
uses
the
oper
ator
to c
lose
.
LOW
PR
ESSU
RE
SHU
TOFF
FEA
TUR
E Va
lve
(21)
is c
onst
antly
trip
ped
open
. W
hen
the
pipe
line
pres
sure
falls
to th
e lo
w tr
ip p
oint
of v
alve
(21)
it c
lose
s,
vent
s th
e pi
lot o
f val
ve (1
8) a
nd c
ause
s th
e op
erat
or to
cl
ose.
LEG
END
P - P
OW
ER
C
- C
YLI
ND
ER
E
- E
XH
AU
ST
D -
PIL
OT
SH
AFE
R
CP
D
CP
OP
EN
CLO
SE
16
229
1214
10
PO
WE
R
EX
HA
US
T
15
24
23
17
1319 18
D
CP
CP
2
6
8
3O
PE
N
51
4
7
CPE
D
CPE
D
27
20
27
21
26 25
13
PIL
OT
28
11
1.
Sha
fer O
pera
tor (
show
n in
clo
sed
posi
tion)
18
. 2-
Way
Nor
mal
ly C
lose
d P
ilot V
alve
2.
Ope
ning
Gas
Hyd
raul
ic T
ank
19.
2-W
ay N
orm
ally
Clo
sed
Pilo
t Val
ve 3
. C
losi
ng G
as H
ydra
ulic
Tan
k 20
. 2-
Way
Nor
mal
ly O
pen
Lim
it Va
lve
4.
Han
d P
ump
lo
cate
d an
d ac
tuat
ed a
t the
end
5.
Spe
ed C
ontro
l (op
tiona
l)
of th
e op
erat
ors
clos
ing
stro
ke.
6.
Pow
er S
tora
ge T
ank
21.
2-W
ay N
orm
ally
Ope
n Li
mit
Valv
e 7
. D
rain
Val
ve
OP
TIO
NA
L
loca
ted
and
actu
ated
at t
he e
nd 8
. R
elie
f Val
ve
PA
CK
AG
E
of
the
oper
ator
s op
enin
g st
roke
. 9
. C
heck
Val
ve
22.
Pow
er S
huto
ff Va
lve
(opt
iona
l)10
. Gau
ge
23.
Reg
ulat
or
11.
Con
trol B
lock
24
. R
elie
f Val
ve
12. P
ower
Stra
iner
(140
mic
ron)
25
. 3-
Way
Nor
mal
ly O
pen
Air
Rel
ay V
alve
13. P
ilot S
train
er (2
5 m
icro
n)
26.
3-W
ay N
orm
ally
Clo
sed
Air
Rel
ay V
alve
14. C
ontrol Pilot P
iston (with orifice)
27. Mechanical Actuating Device attached
15. M
anua
l Ope
ratio
n (h
andl
es n
ot s
how
n)
to
the
top
of th
e op
erat
or ro
tor.
16. P
ower
Pop
pet
28.
Ope
rato
r Rot
or
17. P
ilot I
sola
tion
Valv
e
Hig
h-C
lose
and
Low
-Ope
n Sc
hem
atic
5802
-S
LEG
END
P - P
OW
ER
C
- C
YLI
ND
ER
E
- E
XH
AU
ST
D -
PIL
OT
HIG
H-C
LOSE
FEA
TUR
E W
hen
the
pilo
t pre
ssur
e ris
es to
the
set p
oint
of v
alve
(26)
, it
trips
ope
n an
d ca
uses
the
oper
ator
to c
lose
.
LOW
-OPE
N F
EATU
RE
Whe
n th
e pi
lot p
ress
ure
falls
to th
e se
t poi
nt o
f val
ve (2
5), i
t tri
ps o
pen
and
caus
es th
e op
erat
or to
ope
n.
NO
TE:
Bef
ore
the
oper
ator
can
be
oper
ated
man
ually
, pilo
t is
olat
ion
valv
e (1
7) m
ust b
e cl
osed
.
SH
AFE
R
Emer
genc
y Sh
utdo
wn
Sche
mat
ic
8298
-S
1.
Sha
fer O
pera
tor (
show
n in
ope
n po
sitio
n)
13.
Ope
rato
r Rot
or 2. Opening Gas Hydraulic Tank
14. Control Pilot P
iston (with orifice)
3.
Clo
sing
Gas
Hyd
raul
ic T
ank
15
. M
anua
l Ope
ratio
n (h
andl
es n
ot s
how
n) 4
. H
and
Pum
p
16.
Pow
er P
oppe
t 5
. S
peed
Con
trol (
optio
nal)
17
. P
ower
Shu
toff
Valv
e (o
ptio
nal)
6.
Pow
er S
tora
ge T
ank
18
. 2-
Way
Nor
mal
ly O
pen,
Pilo
t Act
uate
d Li
mit
7.
Dra
in V
alve
O
PTI
ON
AL
Va
lve
loca
ted
and
actu
ated
at t
he e
nd o
f 8
. R
elie
f Val
ve
PAC
KA
GE
th
e op
erat
ors
clos
ing
stro
ke.
9.
Che
ck V
alve
19.
Mec
hani
cal A
ctua
ting
Dev
ice
atta
ched
10. G
auge
to
the
top
of th
e op
erat
or ro
tor.
11.
Con
trol B
lock
20.
Pilo
t Stra
iner
(25
mic
ron)
12
. Pow
er S
train
er (1
40 m
icro
n)
C
PD
15 179
1112
1410
16
18
19
8
6 7
3
5
13
20
CLO
SE
12
4
EX
HA
US
T PO
WE
R
OP
EN
CLO
SE
PIL
OT
20
EMER
GEN
CY
SHU
TDO
WN
FEA
TUR
E Th
e op
erat
or w
ill c
lose
upo
n lo
ss o
f pilo
t pr
essu
re. T
he p
ilot m
ust b
e re
-est
ablis
hed
befo
re th
e op
erat
or c
an b
e re
-ope
ned.
LEG
END
P - P
OW
ER
C -
CY
LIN
DE
RE
- E
XH
AU
ST
D -
PIL
OT
SH
AFE
R
Emer
genc
y Sh
utdo
wn
Sche
mat
ic
8421
-S
C
PD
15 179
1112
1410
16
13
18
21
8
6 7
3
5
19
CLO
SE
12
4
EX
HA
US
T PO
WE
R
OP
EN
CLO
SE
PIL
OT
13
20
E PC
D
1. Shafer O
perator (show
n in open position)
14. Control Pilot P
iston (with orifice)
2.
Ope
ning
Gas
Hyd
raul
ic T
ank
15.
Man
ual O
pera
tion
(han
dles
not
sho
wn)
3.
Clo
sing
Gas
Hyd
raul
ic T
ank
16.
Pow
er P
oppe
t 4
. H
and
Pum
p 17
. P
ower
Shu
toff
Valv
e (o
ptio
nal)
5.
Spe
ed C
ontro
l (op
tiona
l) 18
. 2-
Way
Nor
mal
ly O
pen,
Pilo
t Act
uate
d 6
. P
ower
Sto
rage
Tan
k
Lim
it Va
lve
loca
ted
and
actu
ated
at
7.
Dra
in V
alve
the
end
of th
e op
erat
ors
clos
ing
stro
ke.
8.
Rel
ief V
alve
19
. O
pera
tor R
otor
9.
Che
ck V
alve
20
. 3-
Way
Nor
mal
ly C
lose
d A
ir R
elay
Val
ve10
. Gau
ge
21.
Mec
hani
cal A
ctua
ting
Dev
ice
atta
ched
11.
Con
trol B
lock
to th
e op
erat
or ro
tor.
12. P
ower
Stra
iner
(140
mic
ron)
13
. Pilo
t Stra
iner
(25
mic
ron)
OP
TIO
NA
L
P
AC
KA
GE
LEG
END
P -
Pow
erC
- C
ylin
der
E -
Exh
aust
D -
Pilo
t
EMER
GEN
CY
SHU
TDO
WN
FEA
TUR
EVa
lve
(20)
is c
onst
antly
trip
ped
open
.W
hen
the
pilo
t pre
ssur
e fa
lls to
the
low
trip
poi
nt o
f val
ve (2
0), i
t clo
ses,
ve
nts
the
pilo
t of v
alve
(18)
and
cau
ses
the
oper
ator
to c
lose
.
SH
AFE
R
15 179
1112
1410
16
23
18
19
8
6 7
3
5
13
CLO
SE
12
4
EX
HA
US
T PO
WE
R
OP
EN
CLO
SE
21
CP
22
CP
PIL
OT
C
PD
20
LEG
END
P -
Pow
erC
- C
ylin
der
E -
Exh
aust
D -
Pilo
t
EMER
GEN
CY
SHU
TDO
WN
FEA
TUR
ETh
e op
erat
or w
ill c
lose
upo
n lo
ss o
f pilo
t pre
ssur
e. T
he p
ilot
mus
t be
re-e
stab
lishe
d be
fore
the
oper
ator
can
be
re-o
pene
d.
ELEC
TRIC
REM
OTE
2-W
AY F
EATU
RE
A.
Ene
rgiz
e S
olen
oid
(21)
to C
lose
The
Ope
rato
r.B
. E
nerg
ize
Sol
enoi
d (2
2) to
Ope
n Th
e O
pera
tor.
The
Sol
enoi
ds M
ust B
e D
e-E
nerg
ized
At T
he E
nd O
f The
Op-
erat
ors
Stro
ke.
1. Shafer O
perator (show
n in open position)
14. Control Pilot P
iston (with orifice)
2.
Ope
ning
Gas
Hyd
raul
ic T
ank
15.
Man
ual O
pera
tion
(han
dles
not
sho
wn)
3.
Clo
sing
Gas
Hyd
raul
ic T
ank
16.
Pow
er P
oppe
t 4
. H
and
Pum
p 17
. P
ower
Shu
toff
Valv
e (o
ptio
nal)
5.
Spe
ed C
ontro
l (op
tiona
l) 18
. 3-
Way
Nor
mal
ly O
pen,
Pilo
t Act
uate
d 6
. P
ower
Sto
rage
Tan
k
Lim
it Va
lve
loca
ted
and
actu
ated
at
7.
Dra
in V
alve
the
end
of th
e op
erat
ors
clos
ing
stro
ke.
8.
Rel
ief V
alve
19
. M
echa
nica
l Act
uatin
g D
evic
e at
tach
ed 9
. C
heck
Val
ve
to
the
top
of th
e op
erat
or ro
tor.
10. G
auge
20
. S
huttl
e Va
lve
11.
Con
trol B
lock
21
. 2-
Way
Nor
mal
ly C
lose
d S
olen
oid
Valv
e12
. Pow
er S
train
er (1
40 m
icro
n)
22.
2-W
ay N
orm
ally
Clo
sed
Sol
enoi
d Va
lve
13. O
pera
tor R
otor
23
. P
ilot S
train
er (2
5 m
icro
n)
OP
TIO
NA
LPA
CK
AG
E
Emer
genc
y Sh
utdo
wn
and
Elec
tric
Rem
ote
2-W
ay
Sche
mat
ic
8357
-
SH
AFE
R
Aut
omat
ic L
ineb
reak
Sc
hem
atic
8354
-S
LIN
EBR
EAK
FEA
TUR
EA
rapi
d lo
ss o
f pip
elin
e pr
essu
re
crea
tes
a di
ffere
ntia
l acr
oss
the
diap
hrag
m in
ass
embl
y (2
3)
whi
ch c
ause
s th
e st
em to
mov
e ou
twar
d, a
nd tr
ips
valv
e (2
4)
clos
ed.
Vent
s th
e pi
lot o
f val
ve
(19)
and
cau
ses
the
oper
ator
to
clo
se.
NO
TES:
1.
We
reco
mm
end
the
cus-
tom
er c
onne
ctio
ns to
shu
ttle
valv
e (6
) as
show
n. I
f the
cus
-to
mer
pre
fers
mak
ing
only
one
co
nnec
tion,
elim
inat
e sh
uttle
va
lve
(6).
2.
Afte
r the
line
brea
k fe
atur
e tri
ps, t
oggl
e va
lve
(24)
mus
t be
man
ually
rese
t bef
ore
the
oper
ator
can
be
re-o
pene
d.3.
Th
e pi
lot i
s to
be
conn
ecte
d to
the
pipe
line
or ri
ser a
t a p
oint
w
here
pow
erin
g th
e op
erat
or
will
not
affe
ct th
e pr
essu
re in
th
e pi
lot p
ortio
n of
the
cont
rol.
1. Shafer O
perator
11. Control Block
21. Orifice (adjustable or fixed) used to set
(s
how
n in
ope
n po
sitio
n)
12.
Pow
er S
train
er (1
40 m
icro
n)
ra
te o
f pre
ssur
e dr
op fo
r lin
ebre
ak s
ettin
g.
2. Closing Gas Hydraulic Tank
13. Pilot S
trainer (25 micron)
22. Blowdown Orifice
3. Opening Gas Hydraulic Tank
14. Control Pilot P
iston (with orifice)
23. Diaphragm
Assem
bly
4.
Han
d P
ump
15.
Man
ual O
pera
tion
(han
dles
not
sho
wn)
24
. 3-
Way
Tog
gle
Valv
e w
hich
is o
pen
until
5.
Spe
ed C
ontro
l 16
. P
ower
Pop
pet
a
lineb
reak
con
ditio
n tri
ps it
clo
sed.
6.
Shu
ttle
Valv
e 17
. R
egul
ator
It m
ust b
e m
anua
lly re
set.
7.
Ope
rato
r Rot
or
18.
Rel
ief V
alve
25
. P
ilot I
sola
tion
Valv
e 8
. M
echa
nica
l Act
uatin
g D
evic
e at
tach
ed
19.
2-W
ay N
orm
ally
Ope
n, P
ilot A
ctua
ted
26.
Pow
er S
tora
ge T
ank
to
the
top
of th
e op
erat
or ro
tor.
Li
mit
Valv
e lo
cate
d an
d ac
tuat
ed a
t 27
. D
rain
Val
ve 9
. P
ower
Shu
toff
Valv
e
the
end
of th
e op
erat
ors
clos
ing
stro
ke.
28.
Rel
ief V
alve
10.
Gau
ge
20.
Ref
eren
ce T
ank
29.
Che
ck V
alve
OP
TIO
NA
LPA
CK
AG
E
LEG
END
P -
Pow
erC
- C
ylin
der
E -
Exh
aust
D -
Pilo
t
C
PD
19
8
28
26 27
2
5
7CLO
SE
13
4
C
D
OP
EN
CLO
SE
PIP
ELI
NE
PIL
OT
CPE
15 929
1112
1410
16
13
EX
HAU
ST
TO U
PS
TRE
AM
SID
E O
FV
ALV
E
17
TO DO
WN
STR
EA
MS
IDE
OF
VA
LVE
6S
EE
NO
TE #
1
1813
SE
E N
OTE
#3
25 20
22
2123
24
SE
E N
OTE
#2
10
SH
AFE
R
8
29
27 28
2
5
7CLO
SE
1
3
4
OP
EN
CLO
SE
CP
CP
E
15 2630
1112
1410
16
13
EX
HA
US
T
TO U
PS
TRE
AM
SID
E O
FV
ALV
E
17
TO D
OW
NS
TRE
AM
SID
E O
FV
ALV
E
6S
EE
NO
TE #
1
18
20
23
24
SE
E N
OTE
#2
C
PE
D
19P
IPE
LIN
EP
ILO
T
E
D
9
13S
EE
NO
TE #
3
25
22 21
LIN
EBR
EAK
FEA
TUR
EA
rapi
d lo
ss o
f pip
elin
e pr
essu
re
crea
tes
a di
ffere
ntia
l acr
oss
the
diap
hrag
m in
ass
embl
y (2
3)
whi
ch c
ause
s th
e st
em to
mov
e ou
twar
d, a
nd tr
ips
valv
e (2
4)
clos
ed.
Vent
s th
e pi
lot o
f val
ve
(19)
and
cau
ses
the
oper
ator
to
clos
e.
LOW
PR
ESSU
RE
SHU
TOFF
FE
ATU
RE
Valv
e (9
) is
cons
tant
ly tr
ippe
d op
en.
Whe
n th
e pi
lot p
ress
ure
falls
to th
e tri
p po
int o
f val
ve (9
), it
clos
es, v
ents
the
pilo
t of v
alve
(1
9) a
nd c
ause
s th
e op
erat
or to
cl
ose.
NO
TES:
1.
We
reco
mm
end
the
cust
om-
er c
onne
ctio
ns to
shu
ttle
valv
e (6
) as
show
n. I
f the
cus
tom
er
pref
ers
mak
ing
only
one
con
nec-
tion,
elim
inat
e sh
uttle
val
ve (6
).2.
A
fter t
he li
nebr
eak
feat
ure
trips
, tog
gle
valv
e (2
4) m
ust b
e m
anua
lly re
set b
efor
e th
e op
era-
tor c
an b
e re
-ope
ned.
3.
The
pilo
t is
to b
e co
nnec
ted
to th
e pi
pelin
e or
rise
r at a
poi
nt
whe
re p
ower
ing
the
oper
ator
w
ill n
ot a
ffect
the
pres
sure
in th
e pi
lot p
ortio
n of
the
cont
rol.
1. Shafer O
perator
12. Pow
er Strainer (140 micron)
22. Blowdown Orifice
(s
how
n in
ope
n po
sitio
n)
13.
Pilo
t Stra
iner
(25
mic
ron)
23
. D
iaph
ragm
Ass
embl
y 2. Closing Gas Hydraulic Tank
14. Control Pilot P
iston (with orifice)
24. 3-Way Toggle Valve which is open
3.
Ope
ning
Gas
Hyd
raul
ic T
ank
15.
Man
ual O
pera
tion
(han
dles
not
sho
wn)
until
a li
nebr
eak
cond
ition
trip
s it
4.
Han
d P
ump
16.
Pow
er P
oppe
t
clo
sed.
It m
ust b
e m
anua
lly re
set.
5.
Spe
ed C
ontro
l (op
tiona
l) 17
. R
egul
ator
25
. P
ilot I
sola
tion
Valv
e 6
. S
huttl
e Va
lve
18.
Rel
ief V
alve
26
. P
ower
Shu
toff
Valv
e 7
. O
pera
tor R
otor
19
. 2-
Way
Nor
mal
ly O
pen,
Pilo
t Act
uate
d 27
. P
ower
Sto
rage
Tan
k 8
. M
echa
nica
l Act
uatin
g D
evic
e at
tach
ed
Li
mit
Valv
e lo
cate
d an
d ac
tuat
ed a
t 28
. D
rain
Val
ve
to th
e to
p of
the
oper
ator
roto
r.
the
end
of th
e op
erat
ors
clos
ing
stro
ke.
29.
Rel
ief V
alve
9.
3-W
ay N
orm
ally
Clo
sed
Air
Rel
ay V
alve
20
. R
efer
ence
Tan
k 30
. C
heck
Val
ve10. G
auge
21. Orifice (adjustable or fixed) used to set
11.
Con
trol B
lock
rate
of p
ress
ure
drop
for l
ineb
reak
set
ting.
OP
TIO
NA
LPA
CK
AG
EA
utom
atic
Lin
ebre
ak a
nd
Low
Pre
ssur
e Sh
utof
f Sc
hem
atic
8333
-S
LEG
END
P -
Pow
erC
- C
ylin
der
E -
Exh
aust
D -
Pilo
t
SH
AFE
R
OP
EN
CLO
SE
16
13
2
179
1112
1410
PO
WE
R
EX
HA
US
T
15
76
8
3
CLO
SE
51
4
19PIL
OT
LIN
EG
UA
RD
18
20
21
1.
Sha
fer O
pera
tor (
show
n in
ope
n po
sitio
n) 2
. O
peni
ng G
as H
ydra
ulic
Tan
k 3
. C
losi
ng G
as H
ydra
ulic
Tan
k 4
. H
and
Pum
p 5
. S
peed
Con
trol (
optio
nal)
6.
Pow
er S
tora
ge T
ank
7.
Dra
in V
alve
O
PTI
ON
AL
8.
Rel
ief V
alve
P
AC
KA
GE
9
. C
heck
Val
ve
10. G
auge
11.
Con
trol B
lock
Line
guar
d El
ectr
onic
Lin
e-br
eak
Sche
mat
ic
7802
-S
12. P
ower
Stra
iner
(140
mic
ron)
13. P
ilot S
train
er (2
5 m
icro
n)14. C
ontrol Pilot P
iston (with orifice)
15. M
anua
l Ope
ratio
n (h
andl
es n
ot s
how
n)16
. Pow
er P
oppe
t17
. Pow
er S
huto
ff Va
lve
(opt
iona
l)18
. 2-w
ay N
orm
ally
Clo
sed
Pilo
t Val
ve19
. Reg
ular
(set
at 1
50 P
SI)
20. L
ineg
uard
(ele
ctro
nic
lineb
reak
con
trol)
21. R
elie
f Val
ve (s
et a
t 165
PS
I)
LIN
EGU
AR
D E
LEC
TRO
NIC
LIN
EBR
EAK
FEA
TUR
ETh
e Li
negu
ard
(ele
ctro
nic
lineb
reak
co
ntro
l) (2
0) is
set
to d
etec
t a p
re-
sele
cted
rate
of p
ress
ure
drop
in th
e pi
pelin
e. P
ress
uriz
es th
e pi
lot o
f the
va
lve
(18)
and
cau
ses
the
oper
ator
to
clos
e.
LEG
END
P -
Pow
erC
- C
ylin
der
E -
Exh
aust
D -
Pilo
t
SH
AFE
R
1.
Sha
fer O
pera
tor (
show
n in
ope
n po
sitio
n)
10.
Gau
ge 2
. O
peni
ng G
as H
ydra
ulic
Tan
k 11
. C
ontro
l Blo
ck 3
. C
losi
ng G
as H
ydra
ulic
Tan
k 12
. P
ower
Stra
iner
(140
mic
ron)
4.
Han
d P
ump
13.
Dou
ble
Hol
ding
Val
ve
5. Speed Control (optional)
14. Control Pilot P
iston (with orifice)
6.
Pow
er S
tora
ge T
ank
15.
Man
ual O
pera
tion
(han
dles
not
sho
wn)
7
. D
rain
Val
ve
OP
TIO
NA
L 16
. P
ower
Pop
pet
8.
Rel
ief V
alve
P
AC
KA
GE
17
. P
ower
Shu
toff
Valv
e (o
ptio
nal)
9.
Che
ck V
alve
18
. H
ydra
ulic
Snu
bber
(opt
iona
l)
Man
ual S
chem
atic
5016
-S
OP
EN
CLO
SE
16
179
1112
1410
PO
WE
R
EX
HA
US
T
15
76
8
3
13 45
181
CLOSE
2
SH
AFE
R
1.
Sha
fer O
pera
tor (
show
n in
ope
n po
sitio
n)
11.
Con
trol B
lock
2.
Ope
ning
Gas
Hyd
raul
ic T
ank
12.
Pow
er S
train
er (1
40 m
icro
n) 3. Closing Gas Hydraulic Tank
13. Control Pilot P
iston (with orifice)
4.
Han
d P
ump
14.
Man
ual O
pera
tion
(han
dles
not
sho
wn)
5.
Spe
ed C
ontro
l (op
tiona
l) 15
. P
ower
Pop
pet
6
. P
ower
Sto
rage
Tan
k 16
. H
ydra
ulic
Snu
bber
(opt
iona
l)
7.
Dra
in V
alve
O
PTI
ON
AL
17.
Dou
ble
Hol
ding
Val
ve 8
. R
elie
f Val
ve
PA
CK
AG
E
18.
Pilo
t Stra
iner
(25
mic
ron)
9
. C
heck
Val
ve
19.
Pow
er S
huto
ff Va
lve
(opt
iona
l)10
. Gau
ge
20.
2-W
ay N
orm
ally
Clo
sed
Sol
enoi
d Va
lve
21.
2-W
ay N
orm
ally
Clo
sed
Sol
enoi
d Va
lve
Elec
tric
Rem
ote
2-W
ay S
chem
atic
5043
-S
ELEC
TRIC
REM
OTE
2-W
AY F
EATU
RE
A.
Ene
rgiz
e so
leno
id (2
0) to
clo
se th
e op
erat
or.
B.
Ene
rgiz
e so
leno
id (2
1) to
ope
n th
e op
erat
or.
Th
e so
leno
ids
mus
t be
de-e
nerg
ized
at th
e en
d of
the
oper
ator
s st
roke
.
LEG
END
P - P
OW
ER
C -
CY
LIN
DE
R
CP
OP
EN
CLO
SE
15
199
1112
1310
PO
WE
R
EX
HA
US
T
14
1820 21
CP
76
8
3
17 45
161
CLOSE
2
SH
AFE
R
2-W
ay P
neum
atic
Sche
mat
ic
7004
-S
LEG
END
P - P
OW
ER
C -
CY
LIN
DE
RD
- P
ILO
T
D
CP
OP
EN
CLO
SE
16
179
1112
1410
PO
WE
R
EX
HA
US
T
15
1321 20
D
CP
CLO
SIN
GP
ILO
T
OP
EN
ING
PIL
OT
13
76
8
2
18
45
191
CLOSE
3
1.
Sha
fer O
pera
tor (
show
n in
ope
n po
sitio
n) 2
. C
losi
ng G
as H
ydra
ulic
Tan
k 3
. O
peni
ng G
as H
ydra
ulic
Tan
k 4
. H
and
Pum
p 5
. S
peed
Con
trol (
optio
nal)
6.
Pow
er S
tora
ge T
ank
7.
Dra
in V
alve
O
PTI
ON
AL
8.
Rel
ief V
alve
PA
CK
AG
E 9
. C
heck
Val
ve10
. Gau
ge11
. C
ontro
l Blo
ck12
. Pow
er S
train
er (1
40 m
icro
n)13
. Pilo
t Stra
iner
(25
mic
ron)
14. C
ontrol Pilot P
iston (with orifice)
15. M
anua
l Ope
ratio
n (h
andl
es n
ot s
how
n)16
. Pow
er P
oppe
t17
. Pow
er S
huto
ff Va
lve
(opt
iona
l) 18
. Dou
ble
Hol
ding
Val
ve19
. Hyd
raul
ic S
nubb
er (o
ptio
nal)
20. 2
-Way
Nor
mal
ly C
lose
d P
ilot V
alve
21. 2
-Way
Nor
mal
ly C
lose
d P
ilot V
alve
2-W
AY P
NEU
MAT
IC F
EATU
RE
A.
Pre
ssur
ize
the
open
ing
pilo
t to
open
the
oper
ator
.B
. P
ress
uriz
e th
e cl
osin
g pi
lot t
o cl
ose
the
oper
ator
.
The
cont
rol m
ust b
e ne
utra
lized
at th
e en
d of
the
oper
ator
s st
roke
.
SH
AFE
R
76
8
2
18
45
191
CLOSE3
OP
EN
CLO
SE
PIL
OT
16
179
1112
1410
13
20
D
CP
PO
WE
R
EX
HA
US
T
15
21 23
D
CP
13
22
PC
24
PC
2-W
ay P
neum
atic
W
ith F
ail-S
afe
Sche
mat
ic
9223
-S
2-W
AY P
NEU
MAT
IC F
EATU
RE
A.
The
oper
ator
can
be
clos
ed b
y pr
essu
rizin
g th
e pi
lot.
B.
The
oper
ator
can
be
open
ed b
y de
-pre
ssur
izin
g th
e pi
lot.
PNEU
MAT
IC F
AIL
SAFE
FEA
TUR
EVa
lves
(21)
and
(23)
are
con
stan
tly p
ress
uriz
ed.
Upo
n lo
ss o
f pi
lot,
the
oper
ator
ope
ns.
NO
TE:
Bef
ore
the
oper
ator
can
be
oper
ated
man
ually
, the
pilo
t iso
la-
tion
valv
e (2
0) m
ust b
e cl
osed
.
LEG
END
P - P
OW
ER
C
- C
YLI
ND
ER
E
- E
XH
AU
ST
D -
PIL
OT
1.
Sha
fer O
pera
tor (
show
n in
ope
n po
sitio
n) 2
. C
losi
ng G
as H
ydra
ulic
Tan
k 3
. O
peni
ng G
as H
ydra
ulic
Tan
k 4
. H
and
Pum
p 5
. S
peed
Con
trol (
optio
nal)
6.
Pow
er S
tora
ge T
ank
7.
Dra
in V
alve
O
PTI
ON
AL
8.
Rel
ief V
alve
P
AC
KA
GE
9.
Che
ck V
alve
10. G
auge
11
. C
ontro
l Blo
ck
12. P
ower
Stra
iner
(140
mic
ron)
13. P
ilot S
train
er (2
5 m
icro
n)
14. C
ontrol Pilot P
iston (with orifice)
15. M
anua
l Ope
ratio
n (h
andl
es n
ot s
how
n)16
. Pow
er P
oppe
t17
. Pow
er S
huto
ff Va
lve
(opt
iona
l)18
. Dou
ble
Hol
ding
Val
ve
19. H
ydra
ulic
Snu
bber
(opt
iona
l)20
. Pilo
t Iso
latio
n Va
lve
21. 2
-Way
Nor
mal
ly C
lose
d P
ilot V
alve
22. 2
-Way
Nor
mal
ly O
pen,
Lim
it Va
lve
lo
cate
d an
d ac
tuat
ed a
t the
end
of th
e op
erat
ors
open
ing
stro
ke.
23. 2
-Way
Nor
mal
ly O
pen
Pilo
t Val
ve24
. 2-W
ay N
orm
ally
Ope
n, L
imit
Valv
e
loca
ted
and
actu
ated
at t
he e
nd
of
the
oper
ator
s cl
osin
g st
roke
.
SH
AFE
R
32
31
33
217
45
161
CLOSE
3
OP
EN
CLO
SE
CP
289
20
CPCP
E
14 2434
1112
1310
15
18
EX
HA
US
T
TO U
PS
TRE
AM
SID
E O
FV
ALV
E
21
TO D
OW
NS
TRE
AM
SID
E O
FV
ALV
E
25S
EE
NO
TE #
1
26
7
8
SE
E N
OTE
#2
C
PD
22
19
PIL
OT
18
SE
E N
OTE
#3
23
29
27 6
SE
E N
OTE
#4
LIN
EBR
EAK
FEA
TUR
EA
rapi
d lo
ss o
f pip
elin
e pr
es-
sure
cre
ates
a d
iffer
entia
l ac
ross
the
diap
hrag
m in
as-
sem
bly
(7) w
hich
cau
ses
the
stem
to m
ove
outw
ard,
and
tri
ps v
alve
(8) c
lose
d. V
ents
th
e pi
lot o
f val
ve (1
9) a
nd
caus
es th
e op
erat
or to
clo
se.
ELEC
TRIC
REM
OTE
2-W
AY
FEAT
UR
EA
. E
nerg
ize
sole
noid
(9) t
o
clo
se th
e op
erat
orB
. E
nerg
ize
sole
noid
(28)
to
ope
n th
e op
erat
or.
The
sole
noid
s m
ust b
e de
-en
ergi
zed
at th
e en
d of
the
oper
ator
s st
roke
.N
OTE
S:1.
W
e re
com
men
d th
e cu
s-to
mer
con
nect
ions
to s
huttl
e va
lve
(25)
as
show
n. I
f the
cu
stom
er p
refe
rs m
akin
g on
ly
one
conn
ectio
n, e
limin
ate
shut
tle v
alve
(25)
.2.
A
fter t
he li
nebr
eak
feat
ure
trips
, tog
gle
valv
e (8
) mus
t be
man
ually
rese
t bef
ore
the
oper
ator
can
be
re-o
pene
d.3.
Th
e pi
lot i
s to
be
con-
nect
ed to
the
pipe
line
or ri
ser
at a
poi
nt w
here
pow
erin
g th
e op
erat
or w
ill n
ot a
ffect
the
pres
sure
in th
e pi
lot p
ortio
n of
th
e co
ntro
l.4.
P
ress
ure
switc
h (2
9) is
us
ed to
lock
out t
he e
lect
ric
rem
ote
2-w
ay fe
atur
e w
hile
the
lineb
reak
feat
ure
is tr
ippe
d.
Aut
omat
ic L
ineb
reak
and
El
ectr
ic R
emot
e 2-
Way
Sc
hem
atic
8408
-S
LEG
END
P -
Pow
erC
- C
ylin
der
E -
Exh
aust
D -
Pilo
t
1.
Sha
fer O
pera
tor
10.
Gau
ge
21.
Reg
ulat
or
(sho
wn
in o
pen
posi
tion)
11
. C
ontro
l Blo
ck
22.
Rel
ief V
alve
2.
Clo
sing
Gas
Hyd
raul
ic T
ank
12.
Pow
er S
train
er (1
40 m
icro
n)
23.
Pilo
t Iso
latio
n Va
lve
3. Opening Gas Hydraulic Tank
13. Control Pilot P
iston (with orifice)
24. Pow
er Shutoff Valve
4.
Han
d P
ump
14.
Man
ual O
pera
tion
(han
dles
not
sho
wn)
25
. S
huttl
e Va
lve
5.
Spe
ed C
ontro
l (op
tiona
l) 15
. P
ower
Pop
pet
26.
Ref
eren
ce T
ank
6. Orifice (adjustable or fixed) used to set
16. Hydraulic Snubber (optional)
27. Blowdown Orifice
ra
te o
f pre
ssur
e dr
op fo
r lin
ebre
ak s
ettin
g.
17.
Dou
ble
Hol
ding
Val
ve
28.
2-W
ay N
orm
ally
Clo
sed
Sol
enoi
d Va
lve
7.
Dia
phra
gm A
ssem
bly
18
. P
ilot S
train
er (2
5 m
icro
n)
29.
Pre
ssur
e S
witc
h 8
. 3-
Way
Tog
gle
Valv
e w
hich
is o
pen
19.
2-W
ay N
orm
ally
Ope
n, P
ilot A
ctua
ted
31.
Pow
er S
tora
ge T
ank
un
til a
line
brea
k co
nditi
on tr
ips
it
Lim
it Va
lve
loca
ted
and
actu
ated
at
32.
Dra
in V
alve
cl
osed
. It m
ust b
e m
anua
lly re
set.
th
e en
d of
the
oper
ator
s cl
osin
g st
roke
. 33
. R
elie
f Val
ve 9
. 2-
Way
Nor
mal
ly C
lose
d S
olen
oid
Valv
e 20
. S
huttl
e Va
lve
34.
Che
ck V
alve
OP
TIO
NA
LPA
CK
AG
E
SH
AFE
R
OP
EN
CLO
SE
11
1822
78
96
PO
WE
R
EX
HA
US
T
10
2019
21
2
13 45
121
CLOSE
3
17
PIL
OT
LIN
EG
UA
RD
14
15
16
1.
Sha
fer O
pera
tor (
show
n in
ope
n po
sitio
n) 2
. C
losi
ng G
as H
ydra
ulic
Tan
k 3
. O
peni
ng G
as H
ydra
ulic
Tan
k 4
. H
and
Pum
p 5
. S
peed
Con
trol (
optio
nal)
6.
Gau
ge 7
. C
ontro
l Blo
ck 8
. P
ower
Stra
iner
(140
mic
ron)
9. Control Pilot P
iston (with orifice)
10. M
anua
l Ope
ratio
n (h
andl
es n
ot s
how
n)11
. P
ower
Pop
pet
Line
guar
d El
ectr
onic
Lin
e-br
eak
Sche
mat
ic
9042
-S
12. H
ydra
ulic
Snu
bber
(opt
iona
l)13
. Dou
ble
Hol
ding
Val
ve14
. 2-w
ay N
orm
ally
Clo
sed
Pilo
t Val
ve15
. Lin
egua
rd (e
lect
roni
c lin
ebre
ak c
ontro
l)16
. Reg
ular
(set
at 1
50 P
SI)
17. R
elie
f Val
ve (s
et a
t 165
PS
I)18
. Pow
er S
huto
ff Va
lve
(opt
iona
l)19
. Pow
er S
tora
ge T
ank
20. D
rain
Val
ve
OP
TIO
NA
L 21
. Rel
ief V
alve
P
AC
KA
GE
22
. Che
ck V
alve
LIN
EGU
AR
D E
LEC
TRO
NIC
LIN
EBR
EAK
FEA
TUR
ETh
e Li
negu
ard
(ele
ctro
nic
lineb
reak
co
ntro
l) (1
5) is
set
to d
etec
t a p
re-
sele
cted
rate
of p
ress
ure
drop
in th
e pi
pelin
e. P
ress
uriz
es th
e pi
lot o
f the
va
lve
(14)
and
cau
ses
the
oper
ator
to
clos
e.
LEG
END
P -
Pow
erC
- C
ylin
der
E -
Exh
aust
D -
Pilo
t