Model: 20357-7-940-101

Safety Relief Valve

Properties:

Flow Control Device

Disk

Bonnet Type

Inside screw

Bonnet Attachment Method

Threaded

Disk Loading Method

Spring

Maximum Operating Temp

165.0 degrees fahrenheit single response

Valve Operation Method

Automatic

Connection Type

Unthreaded internal tube all ends

Adjustable Pressure Range

+2901.0/+4000.0 pounds per square inch

Maximum Operating Pressure

6000.0 pounds per square inch single response

Criticality Code Justification

Zzzy

Opening Pressure Setting

2901.0 pounds per square inch

Outside Diameter Tube Accommodated

0.500 inches all ends

Material

Nickel alloy 400 flow control device or nickel alloy r-405 flow control device

Material

Nickel alloy 400 stem or nickel alloy r-405 stem

Material Specification

Qq-n-281, cl a federal specification 1st material response flow control device or qq-n-281, cl b federal specification 2nd material response flow control device

Material Specification

Qq-n-281, cl a federal specification 1st material response stem or qq-n-281, cl b federal specification 2nd material response stem

Media For Which Designed

Oxygen, gaseous single response

Reference Number Differentiating Characteristics

Requires special cleaning and packaging iaw mil-c-52211, for oxygen/nitrogen/hydrogen service

NSN

4820-01-267-4998

Part Number

20357-7-940-101

Description

Valve,safety Relief

CAGE

15187

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.

Part 20357-7-940-101 NSN 4820-01-267-4998

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

05488

FIIG:

A046B0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

127220

UFC:

64490

LTL:

77.5

LCL:

77.5

WCC:

594

TCC:

SHC:

ACC:

Trailers/Vehicles

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Schedule B and Export

Schedule B: 8481400000
SITC: 74740
End Use: Industrial machines, other
NAICS: 332911
USDA: 1

Freight Class: Safety or relief valves