Model: 1A

Safety Relief Valve

Properties:

Pipe Size Accommodated

2.000 inches 1st end

Thread Direction

Right-hand 1st end

Flow Control Device

Disk

Bonnet Type

Inside spring

Bonnet Attachment Method

Threaded

Disk Loading Method

Spring

Valve Discharge Flow Rate

979.0 cubic feet per minute

Maximum Operating Temp

60.0 degrees fahrenheit single response

Connection Style

G46b plain (pipe) 1st end

Connection Style

Plain (pipe) 1st end

Valve Operation Method

Automatic

Connection Type

Threaded external pipe 1st end

Thready Qty Per Inch (tpi)

11-1/2 1st end

Maximum Operating Pressure

250.0 pounds per square inch single response

Thread Size

2.000 inches 1st end

Opening Pressure Setting

110.0 pounds per square inch

Material

Copper alloy

Style Designator

Straight thru

Thread Series Designator

Npt 1st end

Reference Number Differentiating Characteristics

As differentiated by end dim. Data

NSN

4820-00-684-7131

Part Number

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 1A NSN 4820-00-684-7131

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:

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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