Model: ES9983

Safety Relief Valve

Special Features:

With polytetrafluoroethylene seal

Properties:

Thread Direction

Right-hand all ends

Disk Loading Method

Spring

Maximum Operating Temp

400.0 degrees fahrenheit single response

Minimum Operating Temp

-100.0 degrees fahrenheit

End Application

Aircraft, hercules c

Connection Style

G42 flared (tube) 1st end

Connection Style

G4 gasket sea (boss) 2nd end

Valve Operation Method

Automatic

Connection Type

Threaded external tube 1st end

Connection Type

Threaded internal tube 2nd end

Maximum Operating Pressure

1000.0 pounds per square inch single response

Thread Size

0.250 inches all ends

Seat Angle

37.0 degrees 1st end

Opening Pressure Setting

25.0 pounds per square inch

Outside Diameter Tube Accommodated

0.250 inches 2nd end

Material

Steel comp 303 body

Material

Stainless steel seat

Media For Which Designed

Water-oil-gas single response

Style Designator

C8 straight through note: to be used for valve bodies of one section only.

Thread Series Designator

Npt 1st end

Thread Series Designator

Nptf 2nd end

NSN

4820-01-420-5231

Part Number

ES9983

Description

Valve,safety Relief

CAGE

20418

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 ES9983 NSN 4820-01-420-5231

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:

Equipment for Aircraft

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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