Safety Relief Valve

Model / MPN: GS1221-9 | NSN: 4820-01-350-3685

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes valve (1), relief, pressure and temperature.

Product Details

NATO Stock Number

4820-01-350-3685

Sold in multiples of

DEMIL

Thread Direction

Right-hand all ends

Flow Control Device

Disk

Disk Loading Method

Spring

Maximum Operating Temp

225.0 degrees fahrenheit single response

End Application

2920-00-474-3234

Connection Style

G9 plain, optional en (pipe) all ends

Valve Operation Method

Automatic

Connection Type

Threaded internal pipe all ends

Adjustable Pressure Range

+800.0/+1500.0 pounds per square inch

Maximum Operating Pressure

3600.0 pounds per square inch single response

Thread Size

0.750 inches all ends

Material

Copper alloy body

Thread Series Designator

Npt all ends

GS1221 Series Parts

Solicitations

Solicitation	Description	Qty	UOM	Close Date
SPE4A519T531B	Valve, Safety Relief	4	EA	07/12/2019

Pricing and Availability

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GS1221-9 Cross Reference

637B-9-3/4-2
637B-9-3/4-2
GS1221-9
637B-9-3/4-2
GS1221-9
637B-9-3/4-2
GS1221-9
637B-9-3/4-2
GS1221-9
637B-9-3/4-2
GS1221-9
637B-9-3/4-2
GS1221-9