Model: 559B-6M-13

Safety Relief Valve

Special Features:

Pop-off line

Properties:

Thread Direction

Right-hand 1st end

Flow Control Device

Poppet

Maximum Operating Temp

-40.0 degrees fahrenheit 1st response250.0 degrees fahrenheit 2nd response

Connection Style

G46b plain (pipe) 1st end

Connection Style

Plain (pipe) 1st end

Valve Operation Method

Automatic

Connection Type

Threaded external pipe 1st end

Maximum Operating Pressure

200.0 pounds per square inch single response

Thread Size

0.750 inches 1st end

Opening Pressure Setting

13.0 pounds per square inch

Material

Copper alloy bodyrubber butadiene-acrylonitrile class nbr seat

Media For Which Designed

Air 1st responseacetylene 2nd responseammonia, gaseous 3rd responserefrigerant 12 4th responsehydrogen 5th response

Style Designator

Straight through note: to be used for valve bodies of one section only.

Thread Series Designator

Npt 1st end

NSN

4820-00-493-2958

Part Number

559B-6M-13

Description

Valve,safety Relief

CAGE

91816

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 559B-6M-13 NSN 4820-00-493-2958

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:

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