The Series 436 and 438 Valves can be used in a variety of applications that require a steel bodied valve. This could include high or low pressure separators, treaters, dehydrators, or any other pressure vessel.
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Meets ANSI Flanged Dimensions - Perfect for Offshore Applications
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Proven Closed Yoke Design - Reduces the chance of debris entering the valve.
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NACE Adaptable - Can be modified for use in sour service.
| Body Material |
Steel |
Maximum Working Pressure |
See Chart |
| Body Cover |
Steel |
Temperature Limits |
-40°F to 250°F |
| End Connections |
Flanged |
Valve Travel |
1-1/8 Inches |
| Diaphragm Cases |
Steel |
Spring Rate |
750 lbs. per inch |
| Diaphragm |
65 sq. in. Reinforced Buna N
Max. Recommended Pressure 70 psi |
Spring Pre-load |
(3-15 psi Bench Range)
Normal 210 lbs. Maximum 750 lbs. |
| Packing |
1/2" x 1" Non-Lubricated Packing |
Flow Direction |
Under the seat for precise modulation.
Over the seat for shut-in service, on-off service
non-critical modulation. |
| Stem Seat Plug |
303 Stainless Steel, Viton Facing |
Trim |
Modified equal percentage |
The Series 438 Valve is perfect for offshore vessels.
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Meets ANSI Flanged Dimensions - Perfect for Offshore Applications.
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Hammer Union Construction - Reduces downtime for repair.
-
NACE Adaptable - Can be modified for use in sour service.
-
Proven Closed Yoke Design - Reduces the chance for debris entering the valve.
| Temperature Limits |
-40°F to 250°F |
End Connections |
Flanged |
| Stem |
303 S.S. |
Diaphragm Operator |
Steel, 80 sq. in. , Nylon Reinforced Buna N Diaphragm
100 psi Maximum Working Pressure |
| Seat and Plug |
See Ordering Information pdf located on the side of this page. |
Packing |
Non-Lubricated Packing |
| Body Material |
Cast Steel A-216-WCB |
Maximum Working Pressure |
1440 ps |
| Body Cover |
Steel A-105 GR2, Union |
|
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General Notes
1. Standard topworks is direct action (normally closed) with 65 sq. in. effective area.
2. Cv and Cg values are for fully open inner valve.
3. Stock numbers applicable only when valve desired is exactly as described above.
4. To order specify Model Number, Stock Number, Trim Description.
5. See the parts pdf located on the left side of the page.