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DESCRIPTION

The Series 438 Valve 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. The Series 438 Valve is perfect for offshore vessels.

Specifications

Body Material	Cast Steel A-216-WCB
Body Cover	Steel A-105 GR2, Union
End Connections	Flanged
Diaphragm Operator	Steel, 80 sq. in. , Nylon Reinforced Buna N Diaphragm, 100 psi Maximum Working Pressure
Packing	Non-Lubricated Packing
Maximum Working Pressure	1440 psi
Temperature Limits	-40°F to 250°F
Stem	303 S.S.
Seat and Plug	See Ordering Information
Balanced Trim	Provides smooth operation even with high inlet/outlet differential pressures.

FEATURES

Meets ANSI Flanged Dimensions - Perfect for Offshore Applications.
Hammer Union Construction - Reduces downtime for repair.
Proven Closed Yoke Design - Reduces the chance of debris entering the valve.
NACE Adaptable - Can be modified for use in sour service.

ADDITIONAL INFORMATION

General Notes:
1. Standard topworks is direct action (normally closed) with 80 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 parts list attached.

AR - As Required