Model: PC578S42-263-781

Safety Relief Valve

Special Features:

Diaphragm operated

Properties:

Disk Loading Method

Spring

Bolt Hole Quantity

4 1st end

Flange Shape

Round with holes 1st end

Connection Type

Flange 1st end

Adjustable Pressure Range

+0.0/+30.0 pounds per square inch

Maximum Operating Pressure

150.0 pounds per square inch single response

Outside Diameter

5.562 inches 1st end

Bolt Hole Diameter

0.562 inches 1st end

Bolt Circle Diameter

4.438 inches 1st end

Flange Face Design

Plain 1st end

Material

Copper alloy seat

Material

Copper alloy body

Style Designator

Angle

NSN

4820-00-289-4384

Part Number

PC578S42-263-781

Description

Valve,safety Relief

CAGE

80064

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 PC578S42-263-781 NSN 4820-00-289-4384

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:

77.5

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