Model: 1983-1

Safety Relief Valve

Properties:

Thread Direction

Right-hand 1st end

Disk Loading Method

Spring

Valve Discharge Flow Rate

40.0 gallons per minute

Maximum Operating Temp

275.0 degrees fahrenheit single response

Connection Type

Threaded external tube 1st end

Connection Type

Unthreaded external tube 2nd end

Thready Qty Per Inch (tpi)

12 1st end

Maximum Operating Pressure

175.0 pounds per square inch single response

Thread Size

1.500 inches 1st end

Seat Angle

37.0 degrees 1st end

Opening Pressure Setting

135.0 pounds per square inch

Outside Diameter Tube Accommodated

0.625 inches 1st end

Outside Diameter Tube Accommodated

0.750 inches 2nd end

Material

Aluminum alloy body

Material

Aluminum alloy seat

Media For Which Designed

Hydraulic fluid, phosphate-ester base single response

Thread Series Designator

Un 1st end

NSN

4820-00-912-6842

Part Number

1983-1

Description

Valve,safety Relief

CAGE

06177

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 1983-1 NSN 4820-00-912-6842

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:

0.7000lbs

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:

051080

UFC:

29300

LTL:

RATING VARIABLE

LCL:

60.0

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