Model: 538-1040-10-0

Safety Relief Valve

Special Features:

Designed to function with pilot valve 4820011611323

Properties:

Pipe Size Accommodated

3.000 inches 1st end

Flow Control Device

Poppet

Disk Loading Method

Spring

Valve Discharge Flow Rate

845.0 gallons per minute

Valve Operation Method

Automatic

Connection Type

Unthreaded external pipe 1st end

Opening Pressure Setting

250.0 pounds per square inch

Material

Copper alloy body or iron cast body

NSN

4820-01-206-3521

Part Number

538-1040-10-0

Description

Valve,safety Relief

CAGE

26840

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 538-1040-10-0 NSN 4820-01-206-3521

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:

22.4000lbs

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:

736

TCC:

SHC:

ACC:

Construction Materials

End Items End applications NSN 4820-01-206-3521 is a component of

T-39 Aircraft
Fire/crash P15 Truck
Aircraft Crash/structure Firefighting (a/332p-19a) Truck
Fire Fighting Equipment

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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