expanding gate valves - nov · expanding gate valves our cast body expanding gate valve is designed...

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Expanding Gate Valves


Our cast body expanding gate valve is designed for use in liquid service applications. This full bore, through-conduit gate valve features a mechanically sealing gate to assure positive shut-off. The valve can be trimmed to meet most specifications handling a wide range of products and services. Extensions and adaptation for actuation are options regularly requested and provided.

When the valve is completely closed, the gate and segment are expanding tightly against each seat. During operation, the gate and segment retract from the seats prior to travel. This retraction reduces wear on the resilient seat material and protects sealing surfaces in the open and closed positions.

Features• Manufactured and tested to API 6D and ANSI B16.34 specifications•Full port, through conduit• Double block and bleed / double isolation and bleed• Repeated positive shut-off• Mechanical Sealing • Provable zero leakage• Press fit seats• Reduced wear on sealing surfaces• Closed style Injectable stem packing • Inline repairable• External thermal body relief system• Seat sealant / injection ports (6” and up)

Sizes Available2” through 36”

Pressure Classes• ANSI 300, 600, 900, 1500, 2500

Operating TemperaturesStandard -20º F to +250º F (-28º C to +121º C)Low Temp to -50º F (-46º F) High Temp to + 550º F (288º C)

End Connections• Raised Face, Ring Joint, Weld End

Options• Bare stem, electric or hydraulic actuators• Customer specified external thermal body relief• Standard Service• NACE MR0175• Brine Service• High Temp

Applications• Mainline blocks• Launchers / receivers• Pumping stations• Multi product manifolds• Product isolation• Filtration and process• High temperature• Metering stations


T-21 (Standard Trim)-20º F to 350º F (-28º C to 176º C) NACE

T-GT (Geothermal Trim)-20º F to 550º F (-28º C to 288º C)

Part Material Material

Body ASTM A216 WCC ASTM A216 WCC W/LSS-755

Bonnet ASTM A36 ATM A35 W/LSS-755

Yoke Tube AISI 1018/1020 AISI 1018/1020

Seat Ring* Carbon Steel ENP Carbon Steel ENP W/LSS-755

Seat Insert PTFE 25% Glass Filled PTFE 25% Glass Filled

Gate/Segment Carbon Steel ENP Carbon Steel ENP W/LSS-755

Gate Guide AISI 1018/1020 ENP AISI 1018/1020 ENP

Stem 17-4 PH SS 17-4 PH SS

Bonnet Gasket* + Viton EPDM - High Temperature

Stem Packing* + Viton Duck GTFE

Bearing Housing AISI 1018/1020 AISI 1018/1020

Thrust Bearing TIMKEN TIMKEN

Stem Nut AL Bronze AL Bronze

Handwheel Carbon Steel Carbon Steel

Stem Protector Lexan Clear Lexan Clear

Studs ASTM A193 GR B7M ASTM A193 GR B7M

Nuts ASTM A194 GR 2HM ASTM A194 GR 2HM

Body Fitting* AISI 4140 Stainless Steel

Packing Fittings AISI 4140 Stainless Steel

Seat O-rings* + Viton EPDM - High Temperature

* Recommended Spare Parts+ Soft GoodsNACE trim available upon request

T1-EX Expanding Gate Valve Materials of Construction


Size and Class Outline Dimensions and Weights

Valve SizeASME Class

ASME Working Pressure (psig)

F/F Dimension, Inch, AB G F H

Valve Weight (Approx) lbsIn. mm RF RTJ

2 50 600 1500 11.496 11.614 2.06 16.98 5.17 13 109

2 50 900 2250 14.488 14.654 2.06 16.98 5.38 13 170

2 50 1500 3750 14.488 14.654 2.06 16.98 5.38 13 170

3 80 600 1500 14.02 14.134 3.12 22.66 7.5 13 207

3 80 900 2250 15 15.118 3.12 22.66 7.5 13 270

3 80 1500 3750 18.5 18.622 3.12 22.66 7.5 13 331

4 100 600 1500 17 17.126 4.13 Not Available 8.88 15.5 375

4 100 900 2250 17.992 18.11 4.13 Not Available 9.25 15.5 441

4 100 1500 3750 21.496 21.61 4.13 Not Available 10 15.5 644



Valve SizeASME Class


F/F Dimension,AB G F H K


6 150 300 750 15.87 16.496 5.98 Not Available 12.62 15.5 - 520

6 150 600 1500 22 22.126 5.98 Not Available 12.62 22 - 602

6 150 900 2250 24.016 24.134 5.98 Not Available 13.13 22 - 823

6 150 1500 3750 27.756 27.99 5.98 Not Available 13.88 17.79 30.51 1235

8 200 300 750 16.5 17.126 7.99 Not Available 16.25 25.5 - 717

8 200 600 1500 26 26.142 7.99 Not Available 16.25 25.5 - 1015

8 200 900 2250 29.016 29.134 7.99 Not Available 16.75 17.79 34.98 1433

8 200 1500 3750 32.756 33.11 7.99 Not Available 17.75 17.79 34.98 2002

10 250 600 1500 30.984 31.142 10 Not Available 20 17.79 39.72 2007

10 250 900 2250 32.992 33.11 10 Not Available 20.5 23.25 40.75 2448

10 250 1500 3750 39 39.37 10 Not Available 21.7 23.25 40.75 3649

12 300 300 750 30* - 12.09 Not Available 23.06 23.25 46.25 2482

12 300 600 1500 32.992 33.11 12.09 Not Available 23.06 23.25 46.25 2734



Valve Size ASME Class


F/F Dimension, AB G F H K


12 300 900 2250 37.992 38.11 12.09 Not Available 24.05 23.25 47.6 3528

14 350 300 750 30.16 30.630 13.25 Not Available 25.5 23.25 54.03 2697

14 350 600 1500 35 35.118 13.25 Not Available 25.5 23.25 54.03 3308

16 400 300 750 32.99 33.622 15.25 Not Available 27.88 23.25 60.38 3616

16 400 600 1500 39 39.134 15.25 Not Available 27.88 23.25 60.38 4179

16 400 900 2250 44.488 44.882 15.25 Not Available 28.82 23.25 60.38 5954

20 500 300 750 39.02 39.764 19.25 Not Available 36 36 69.86 6395

20 500 600 1500 47 47.244 19.25 Not Available 36 36 69.86 8136

24 600 300 750 45 45.866 23.31 Not Available 45 – Bare Stem 10143

24 600 600 1500 55 55.394 23.31 Not Available 45 – Bare Stem 12348

30 750 300 750 55 55.984 29.17 Not Available 55.12 36 100.36 18085

30 750 600 1500 65 65.512 29.17 Not Available 57.09 – Bare Stem 23153



* 12” 300 Class Valves have 400 Class end-to-end dimensions

[email protected] nov.com/midstream

Valves4554 Kennedy Commerce DriveHouston, Texas 77032(713) 944-5950

National Oilwell Varco has produced this brochure for general information only, and it is not intended for design purposes. Although every effort has been made to maintain the accuracy and reliability of its contents, National Oilwell Varco in no way assumes responsibility for liability for any loss, damage or injury resulting from the use of information and data herein. All applications for the material described are at the user’s risk and are the user’s responsibility.

© 2015 National Oilwell Varco All Rights ReservedDPF1000090-MKT-001 Rev 01

Corporate Headquarters7909 Parkwood Circle Drive Houston, Texas 77036 USA

expanding gate valves - nov · expanding gate valves our cast body expanding gate valve is designed...

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