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DESCRIPTION

The Series 418 and Series 420 are ideal for high pressure separators, dehydrators, or any application where it is necessary to control the fluid output.

Specifications

Body Material	Series 420 Steel WCB Series 418 Ductile A-395
End Connections	1” and 2” FNPT
Body Cover	Steel, Union
Diaphragm Operator	Steel, 65 sq. in. Nylon Reinforced Buna N Diaphragm Maximum Recommended Operating Pressure 70 psi Maximum Containment Pressure 100 psi
Packing	Non-Lubricated Buna N
Maximum Working Pressure	See Schedule on Page 2
Temperature Limits	-20°F to 250°F
Stem Material	303 Stainless Steel
Plug and Seat	See Schedule on Page 2

FEATURES

Ductile or Steel Bodies - Meets all application demands.
Hammer Union Construction - Reduced downtime for repair.
Wide Range of Trim Sizes - Meets all operating conditions.
Globe or Angle Body - Ease of piping.
Nace Adaptable - Can be modified for use in sour service.

ADDITIONAL INFORMATION

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. Part numbers applicable only when valve desired is exactly as described above.
4. To order specify Model Number, Part Number, Trim Description.
5. See attached parts list.