Model: 81PSM68-4(150PSIG)

Safety Relief Valve

Properties:

Thread Direction

Right-hand 2nd end

Thread Direction

Right-hand 1st end

Flow Control Device

Disk

Bonnet Type

Inside spring

Bonnet Attachment Method

Pressure seal, ring type

Disk Loading Method

Spring

Connection Style

Plain (pipe) 1st end

Valve Operation Method

Automatic

Connection Type

Threaded external pipe 1st end

Connection Type

Threaded internal pipe 2nd end

Thread Size

0.75 inches 1st end

Thread Size

1.00 inches 2nd end

Opening Pressure Setting

150.0 pounds per square inch

Material

Plastic seat

Material

Steel comp 316 body

Media For Which Designed

Liquid single response

Style Designator

Angle

Thread Series Designator

Npt 2nd end

Thread Series Designator

Npt 1st end

Furnished Items And Quantity

1 orifice plate

NSN

4820-01-622-1531

Part Number

81PSM68-4(150PSIG)

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 81PSM68-4(150PSIG) NSN 4820-01-622-1531

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