Safety Relief Valve

NSN: 4820-01-016-9454 | Model: P7-637-.5

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.

NSN Properties and Flags

NATO Stock Number

4820-01-016-9454

DEMIL

Thread Class

3a 1st end

Thread Direction

Right-hand 1st end

Flow Control Device

Poppet

Disk Loading Method

Spring

Maximum Operating Temp

180.0 degrees fahrenheit single response

Connection Style

External seat for gasket seal (boss) 1st end

Valve Operation Method

Automatic

Connection Type

Threaded external boss 1st end

Maximum Operating Pressure

35.0 pounds per square inch single response

Thread Size

1.312 inches 1st end

Opening Pressure Setting

0.5 pounds per square inch

Material

Aluminum alloy 2024 body

Material Specification

Qq-a-225/6 federal specification single material response body

Media For Which Designed

Air 1st response

Surface Treatment

Anodize

Style Designator

Straight thru

Thread Series Designator

Unf 1st end

Furnished Items And Quantity

1 gasket and 1 nut

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

Certified Quality Assurance

ISO 9001:2015 + AS9120B
Counterfeit Parts Prevention
100% Product Inspections
7 Year Record Retention
On Time Delivery
HAZMAT Certified
Worldwide Shipping

NSN 4820-01-016-9454 Datasheet

Supply Class (FSC):

Nonpowered Valves

Cross Reference:

P7-637-.5

Cage Codes:

Circor Aerospace, Inc. (CAGE 91816)

Schedule B & Trade:

Schedule B: 8481400000 (NAICS 332911)

Safety or relief valves
SITC: 74740

Safety or relief valves
End Use: 21180

Industrial machines, other

Identification:

HMIC

N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

PMIC

U - Precious metal content is unknown

CRITL

- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:

NMFC:

127220 - Pressure reg/red/relief valves noi
WCC:

594 - Pumps and parts, (machinery and parts),(less than 35 feet)
ADC:

A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.
ACC:

B - Construction materials: includes paint and related materials, prefabricated building, wood products, metal and composition mater
LCL:

P - 77.5
LTL:

P - 77.5
SHC:

Z - Other or no special handling required (sh)
TCC:

Z - No special type of cargo code applicable

Questions & Answers:
What are the historical prices recorded for this stock number?
No pre-dated pricing for this NSN could be found.
Does NSN 4820-01-016-9454 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
No recorded entities for this stock number.
What is the NIIN of NSN 4820-01-016-9454?
010169454 or 01-016-9454
Does NSN 4820-01-016-9454 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 4820-01-016-9454?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Feb 26, 1976