Technical Databook

Steam Valveswith Rotary Actuators

Version 4.0

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Table of Contents

Steam ValvesProduct Overview 4Mechanical Fail-Safe Rotary ActuatorsLFH..series 5SRF..A-..-5 series 6Dimensions / Precaution for Installation 7Inspection and Maintenance 8Wiring Diagrams 9

4 UL marked actuators is optional, please contact your local Sales Representative for details.

Steam Valve - Product overview

0...+175°C

100

Ps

90°

Valve Material

Technical data

Steam Valves and Rotary Actuators

2-way Steam ValvesDN15...80

Equal-percentage characteristics for modulating control of cold water, hot water and steam

Applications

Heat exchangerDistrict heating

Connection Flange PN16Kvs 3 1.4 2.2 3.5 5.2 21.6 34.5 56.0

DN 15 15 15 15 15 25 25 40 40 50 65

Flow characteristics of Steam Valves

kv

Y

Valve’s Sizing

p3

P1(abs)P2(abs)Absolute pressureW

Suitable Mechanical Fail-Safe Rotary Actuators, Modulating, DC (0)2...10VLFH24-SR-S AC/DC 24V SRF24A-SR-5 AC/DC 24V

Suitable Mechanical Fail-Safe Rotary Actuators, Open / CloseLFH24-S AC/DC 24V SRFA-5 AC 24...240V / DC 24...125VLFH230-S AC/DC 230V SRFA-S2-5 AC 24...240V / DC 24...125V

V100

k =

100

1+P2

k =0.162

1/2

P1

k =0.14

> P1/2_

5UL marked actuators is optional, please contact your local Sales Representative for details.

Mechanical Fail-Safe Rotary Actuators for operation of: Torque:Modulating control:Open/Close control:

DN15...25 Steam Valve4NmLFH24-SR-S (AC/DC 24V)LFH24-S (AC/DC 24V)LFH230-S (AC 230V)

LFH.. series Mechanical Fail-Safe Rotary Actuators

Technical data

LFH24-S

LFH230-S

LFH24-SR-S

Basic technical data

EMC

2

95°

IP54

5VA

7VA

40...75s

7VA

40...75s

6 UL marked actuators is optional, please contact your local Sales Representative for details.

Mechanical Fail-Safe Rotary Actuators for operation of: Torque:Modulating control:Open/Close control:

DN40...80 Steam Valves20NmSRF24A-SR-5 (AC/DC 24V)SRFA-5, SRFA-S2-5 (AC 24 ...240V) (DC 24 ...125V)

SRF..A-..-5 series Mechanical Fail-Safe Rotary Actuators

Technical data

SRFA-5

SRFA-S2-5

SRF24A-SR-5

Basic technical data

EMC

90°

IP54

2

2

2

2

7UL marked actuators is optional, please contact your local Sales Representative for details.

Dimensions

Steam Valves - Dimensions / Precaution for Installation

Precaution for installation

Valve Type Size L(mm)

L1(mm)

H(mm)

H1(mm)

D(mm)

C(mm)

g(mm)

t(mm)

h(mm) N Weight

(kg)50 147 75 95 65 46 16 14 4 3.0

127 60 147 90 115 65 14 4 4.9

165 162 103 150 110 20 19 4 9.0

162 107 165 125 99 20 19 4 11.0

190 90 162 124 145 22 19 4 15.6

203 100 162 125 200 160 132 22 19

Caution

Caution (avoid cavitation)

Caution:

1. 2. 3. 4. 5. 6. 7.

9.

UL marked actuators is optional, please contact your local Sales Representative for details.

Inspection and maintenance

Inspection and Maintenance

CAUTION

Inspection items and details

Inspection item Inspection interval Inspection detail

Troubleshooting

Problem Part to check Action

noise

9UL marked actuators is optional, please contact your local Sales Representative for details.

AC/DC 24V AC 230V

AC 24...240VDC 24...125V

1 2

M

T

– +AC 24...240VDC 24...125V

1 2

A=10° A°

> A° B =10...90°B°

> B°M e

T

– +

Steam Valves - Wiring Diagrams

Wiring diagrams

SRFA-5 SRFA-S2-5

LFH24-SR-S SRF24A-SR-5

LFH230-SLFH24-S

1 2 3 5

UY

T

– +

1 2 3 5

UY

T

– +AC/DC 24VAC/DC 24V

DC (0)2...10VDC 2...10V

DC (0)2...10VDC 2...10V

10

ASIA PACIFIC HEADQUARTERSBelimo Actuators Ltd.

Belimo AUSTRALIA

Belimo CHINA

Belimo HONG KONG

Belimo INDIA

11

Innovation, Quality and Consultancy:A partnership for motorising HVAC actuators

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