Model: D559B1M5

Safety Relief Valve

Properties:

Thread Direction

Right-hand all ends

Flow Control Device

Poppet

Bonnet Type

Inside screw

Bonnet Attachment Method

Integral

Disk Loading Method

Spring

Maximum Operating Temp

-40.0 degrees fahrenheit 1st response

Maximum Operating Temp

250.0 degrees fahrenheit 2nd response

Connection Style

G46b plain (pipe) all ends

Connection Style

Plain (pipe) all ends

Valve Operation Method

Automatic

Connection Type

Threaded external pipe all ends

Maximum Operating Pressure

200.0 pounds per square inch single response

Thread Size

0.125 inches all ends

Opening Pressure Setting

5.0 pounds per square inch

Material

Copper alloy

Media For Which Designed

Refrigerant 12 2nd response

Media For Which Designed

Gas, inert 1st response

Style Designator

Straight thru

Thread Series Designator

Npt all ends

Furnished Items And Quantity

1 deflector cap

NSN

4820-00-539-8976

Part Number

D559B1M5

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 D559B1M5 NSN 4820-00-539-8976

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

Pricing & Availability Check

Submit this form for stock availability and pricing.

How to Order

Ordering from buyaircraftparts.com

If you would like to order this safety relief valve (NSN 4820-00-539-8976) please submit the pricing and availability form above to receive an up to date quote by email. If you agree to the pricing and terms you can e-sign your order online!

We are pleased to have the opportunity to serve you.

Have a Question

Hours:	08:00-18:00 Eastern Standard Time
Phone:	+1 470-231-0824
Email:	Contact Form »

Schedule B and Export

Schedule B: 8481400000
SITC: 74740
End Use: Industrial machines, other
NAICS: 332911
USDA: 1

Freight Class: Safety or relief valves