Model: 20274

Safety Relief Valve

Special Features:

Cleaned for oxygen service

Properties:

Pipe Size Accommodated

0.500 inches all ends

Bonnet Type

Outside screw-yoke

Bonnet Attachment Method

Bolted

Disk Loading Method

Spring

Maximum Operating Temp

250.0 degrees fahrenheit single response

End Application

Forrestal class cv

Valve Operation Method

Automatic

Connection Type

Unthreaded internal pipe all ends

Adjustable Pressure Range

+56.0/+65.0 pounds per square inch

Maximum Operating Pressure

400.0 pounds per square inch single response

Material

Bronze

Material Specification

Astm b-61 assn standard single material response

Media For Which Designed

Oxygen, liquid single response

Furnished Items And Quantity

2 tailpiece

NSN

4820-01-428-9878

Part Number

20274

Description

Valve,safety Relief

CAGE

01343

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 20274 NSN 4820-01-428-9878

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:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

12.0000lbs

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

127220

UFC:

64490

LTL:

77.5

LCL:

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