Safety Relief Valve

NSN: 4820-00-163-5161 | Model: A42437

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

4820-00-163-5161

DEMIL

Flow Control Device

Disk

Bonnet Type

Exposed spring

Bonnet Attachment Method

Bolted

Disk Loading Method

Spring

Valve Discharge Flow Rate

43200.0 pounds per hour

Renewable Seat Ring Type

Threaded

Bolt Hole Quantity

8 2nd end

Valve Operation Method

Automatic or manual

Flange Shape

Round with holes 2nd end

Features Provided

Pressure tight outlet side

Valve Size

2.500 inches

Criticality Code Justification

Feat

Opening Pressure Setting

710.0 pounds per square inch

Outside Diameter

9.000 inches 2nd end

Thickness

1.250 inches 1st end

Bolt Hole Diameter

0.875 inches 2nd end

Bolt Circle Diameter

7.250 inches 2nd end

Flange Face Design

Recessed straight 1st end

Raised Face Height

0.062 inches 2nd end

Raised Face Diameter

5.500 inches 2nd end

Recess Diameter

6.875 inches 1st end

Recess Depth

0.062 inches 1st end

Special Features

Items are being coded as critical to insure source inspection will be performed at the point of manufacture, prior to material receipt by the us navy or other dod components. These items are piece parts or end items in support of vital military hardware necessary to sustain the successful mission of the ships, submarines, and shore stations of the us navy. Critical features including, but not limited to, dimensions, tolerances/clearances, electronic characteristics, and metallurgical properties will bespecified for government q ar (quality assurance representatives) to insure the highest possible degree of quality and reliability of these parts being delivered under navicp contracts

Style Designator

Angle flanged ends

Reference Number Differentiating Characteristics

As differentiated by the valve discharge flow rate requirement

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 4820-00-163-5161 Datasheet

Supply Class (FSC):

Nonpowered Valves

Cross Reference:

A42437

Cage Codes:

Pentair Valves & Controls Us Lp (CAGE 15187)

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

A - Item does not contain precious metal.

ADPE

- Represents items with no adp components

CRITL

- The item does not have a nuclear hardened feature but does have other critical featur (s) such as tolerance, fit restrictions or application.

Freight Information:

NMFC:

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

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

9 - Other or no special handling required (sh)
ADC:

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

P - 77.5
LTL:

P - 77.5
ACC:

V - Trailers, vehicles, machinery, shop and warehouse equipment and supplies including special tools and equipment, ground servicing
TCC:

Z - No special type of cargo code applicable

NSN Management Codes:

SOS
Nrp
AAC
C
Quantity per pack
No qup
Unit of Measure
Ea
Shelf Life
N/A
Classification Control
U
MGMT_CTL
7h--009
Repariability
If condemned or uneconomically repairable, then dispose at intermediate level.

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $8,486.40 to $14,144.00..
Does NSN 4820-00-163-5161 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Navy
What is the NIIN of NSN 4820-00-163-5161?
001635161 or 00-163-5161
Does NSN 4820-00-163-5161 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 4820-00-163-5161?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Nov 13, 1971