Model: 53-720057-1

Safety Relief Valve

Properties:

Thread Class

3a 1st end

Thread Direction

Right-hand 1st end

Flow Control Device

Poppet

Disk Loading Method

Spring

Connection Style

G42 flared (tube) 1st end

Connection Style

Flared (tube) 1st end

Valve Operation Method

Automatic

Connection Type

Threaded external tube 1st end

Thready Qty Per Inch (tpi)

20 1st end

Maximum Operating Pressure

290.0 pounds per square inch single response

Thread Size

0.437 inches 1st end

Seat Angle

37.0 degrees 1st end

Opening Pressure Setting

23.0 pounds per square inch

Outside Diameter Tube Accommodated

0.250 inches 1st end

Media For Which Designed

Air single response

Style Designator

C4 straight thru

Style Designator

Straight thru

Thread Series Designator

Unf 1st end

NSN

4820-00-034-5877

Part Number

53-720057-1

Description

Valve,safety Relief

CAGE

76301

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 53-720057-1 NSN 4820-00-034-5877

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:

0.4000lbs

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:

127220

UFC:

64490

LTL:

77.5

LCL:

WCC:

593

TCC:

SHC:

ACC:

Trailers/Vehicles

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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