Model: 1478-1/2IN185PSI

Safety Relief Valve

Properties:

Thread Direction

Right-hand 2nd end

Thread Direction

Right-hand 1st end

Flow Control Device

Disk

Disk Loading Method

Spring

Maximum Operating Temp

406.0 degrees fahrenheit single response

Connection Style

G46b plain (pipe) 1st endg9 plain, optional en (pipe) 2nd end

Valve Operation Method

Automatic

Connection Type

Threaded external pipe 1st endthreaded internal pipe 2nd end

Maximum Operating Pressure

300.0 pounds per square inch single response

Thread Size

0.500 inches 1st end0.750 inches 2nd end

Opening Pressure Setting

185.0 pounds per square inch

Material

Copper alloy flow control device

Material

Copper alloy body

Material Specification

Qq-c-390, alloy d4/d/ federal specification single material response body

Material Specification

Qq-c-390, alloy d5/d/ federal specification single material response flow control device

Media For Which Designed

Water, fresh single response

Thread Series Designator

Npt 2nd end

Thread Series Designator

Npt 1st end

NSN

4820-01-098-1626

Part Number

1478-1/2IN185PSI

Description

Valve,safety Relief

CAGE

38056

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 1478-1/2IN185PSI NSN 4820-01-098-1626

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:

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:

594

TCC:

SHC:

ACC:

Construction Materials

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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