Model: 20028798

Safety Relief Valve

Properties:

Thread Class

3b all ends

Thread Direction

Right-hand all ends

Flow Control Device

Poppet

End Application

A-10a aircraft

Connection Style

G4 gasket sea (boss) all ends

Valve Operation Method

Automatic

Connection Type

Threaded internal boss all ends

Adjustable Pressure Range

+400.0/+800.0 pounds per square inch

Maximum Operating Pressure

4000.0 pounds per square inch single response

Thread Size

0.438 inches all ends

Opening Pressure Setting

475.0 pounds per square inch

Material

Aluminum alloy 2024 body

Thread Series Designator

Unf all ends

NSN

4820-01-078-7169

Part Number

20028798

Description

Valve,safety Relief

CAGE

02250

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 20028798 NSN 4820-01-078-7169

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:

0.6000lbs

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:

WCC:

594

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