Safety Relief Valve

EN25-66

(NSN) National Stock Number

4820-00-287-4089

Federal Supply Classification

4820 Nonpowered Valves

Item Name Code

05488

Schedule B Code

8481400000

Summary

Right-hand all ends thread direction, poppet flow control device, exposed spring bonnet type, threaded bonnet attachment method, spring disk loading method, 31.0 cubic feet per minute valve discharge flow rate

DAC	HCC	DMIL	RNCC
X	-	-	5

RNVC	SADC	MSDS	RNAAC
9	-	-	XX

Identification

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.

INC	FIIG	Concept	Condition
05488	A046B0	1	2

Specifications

Thread Direction

right-hand all ends

Details

The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.

Flow Control Device

poppet

Details

The part that controls the flow through the item.

Bonnet Type

exposed spring

Details

Indicates the type of housing on the item that accommodates the stem packing or spring.

Bonnet Attachment Method

threaded

Details

The means by which the bonnet is attached to the item.

Disk Loading Method

spring

Details

The means of closing the item when inlet pressure decreases.

Valve Discharge Flow Rate

31.0 cubic feet per minute

Details

The rated valve discharge capacity per unit of time.

Connection Style

plain (pipe) all ends

Details

The style designation indicating the configuration that most nearly corresponds to the appearance of the connection.

Valve Operation Method

automatic or manual

Details

The means used to control the operation of the valve.

Connection Type

threaded external pipe all ends

Details

Indicates the type of connection/s/.

Maximum Operating Pressure

250.0 pounds per square inch single response

Details

The maximum pressure at which the item is rated for operation.

Nominal Thread Size

0.375 inches all ends

Details

A designation that is used for the purpose of general identification of the thread.

Opening Pressure Setting

50.0 pounds per square inch

Details

The predetermined pressure at which the item is calibrated to open.

Material

copper alloy overall

Details

The chemical compound or mechanical mixture properties of which the item is fabricated.

Media For Which Designed

air 1st response

Details

The type of media for which the item is designed.

Media For Which Designed

gas, natural 2nd response

Details

The type of media for which the item is designed.

Style Designator

angle

Details

The style designation indicating the configuration that most nearly corresponds to the appearance of the item.

Thread Series Designator

npt all ends

Details

A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.

Master-Cross Reference List

Part	CAGE	DAC	HCC	RNCC	RNVC	MSDS	RNAAC
16553	93742	X	-	3	2	-	XX
70607	15434	X	-	3	2	-	XX
2510	93472	X	-	5	9	-	XX
1603496	50019	X	-	5	9	-	XX
EN25-66	0CSK6	5	-	5	9	-	ZZ
A9052	46522	X	-	3	2	-	XX
A9052KITAK67	46522	X	-	3	2	-	XX
00664-0368	93568	6	-	3	9	-	AX
664-368	93568	6	-	5	9	-	AX
48SIZE3-8 50PSI	01343	X	-	3	2	-	XX
B2916	01343	6	-	3	2	-	ZZ
FIG48-3-8-50LB	01343	X	-	3	2	-	XX
FIG48SIZE3-8-50PSI	01343	X	-	3	2	-	XX

Material and Special Handling

Hazardous material, precious metals, criticality, and electrostatic discharge indicators.

HMIC	PMIC	ESD/EMI	Criticality
N	U	-	-

Freight

Universal / National Freight and Handling Information

UFC	HMC	LTL	LCL
29300	-	W	-

RVC	WCC	TCC	SHC
-	576	Z	9

Certified Supplier

Order with confidence. We are a valued certified supplier serving customers in the military and aerospace industries.

Genuine Manufacturers Parts
100% Product Inspection
7 Year Sales Record Retention
Fast On-Time Delivery
HAZMAT Certified
Global Shipping

Manufacturer

PIERCE CO INC THE SUB OF AVIS INDUSTRIAL CORP

CAGE: 77260

UPLAND , IN , 46989-2000

UNITED STATES

View Products

FAQs

Frequently asked questions for NSN 4820-00-287-4089

What is the NIIN of the NSN 4820-00-287-4089?

The National Item Identification Number (NIIN) of the NSN 4820-00-287-4089 is 00-287-4089

When the NSN 4820-00-287-4089 was assigned to the Federal Catalog?

It was assigned 62 years ago, on Tue, Jan 1, 1963

Does the NSN 4820-00-287-4089 contain any precious metals?

Type/content is unknown

Does the NSN 4820-00-287-4089 contain any hazardous material?

No data in HMIRS

Can't Find It

If you didn't find what you need, don't worry, we're here to help! Our team is ready to help you find exactly what you need. Click below to contact us.