Model: 668376-3

Safety Relief Valve

Properties:

Thread Class

3b all ends

Thread Direction

Right-hand all ends

Flow Control Device

Poppet

Disk Loading Method

Spring

Valve Discharge Flow Rate

12.0 gallons per minute

Maximum Operating Temp

160.0 degrees fahrenheit single response

Connection Style

G4 gasket sea (boss) all ends

Connection Style

Gasket sea (boss) all ends

Valve Operation Method

Automatic

Connection Type

Threaded internal boss all ends

Maximum Operating Pressure

3000.0 pounds per square inch single response

Thread Size

0.750 inches all ends

Opening Pressure Setting

1000.0 pounds per square inch

Material

Aluminum alloy

Media For Which Designed

Fuel/oil, hydrocarbon single response

Style Designator

Straight through note: to be used for valve bodies of separable sections.

Thread Series Designator

Unjf all ends

NSN

4820-00-614-2227

Part Number

668376-3

Description

Valve,safety Relief

CAGE

98897

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 668376-3 NSN 4820-00-614-2227

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:

WCC:

594

TCC:

SHC:

ACC:

Construction Materials

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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