Check Valve

NSN: 4820-00-005-4903 | Model: 493-12B2-5

A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.

NSN Properties and Flags

NATO Stock Number

4820-00-005-4903

DEMIL

Thread Class

3a all ends

Thread Direction

Right-hand all ends

Flow Control Device

Poppet

Disk Loading Method

Spring

Maximum Operating Temp

225.0 degrees fahrenheit 1st response

Connection Style

Gasket seal (boss) all ends

Valve Operation Method

Automatic

Connection Type

Threaded internal boss all ends

Mounting Position

Horizontal

Maximum Operating Pressure

3000.0 pounds per square inch single response

Thread Size

1.062 inches all ends

Outside Diameter Tube Accommodated

0.750 inches all ends

Special Features

Valve cracking pressure 5 psi

Material

Steel comp 303 flow control device and steel comp 304 flow control device

Material Specification

Qq-c-676 military specification single material response body

Media For Which Designed

Fuel/oil, hydrocarbon 2nd response

Style Designator

Straight thru

Thread Series Designator

Unjf all ends

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 4820-00-005-4903 Datasheet

Supply Class (FSC):

Nonpowered Valves

Cross Reference:

493-12B2-5
493-12B2-5

Cage Codes:

Hannifin Corporation Parker (CAGE 09990)
Teledyne Industries Inc (CAGE 86768)

Schedule B & Trade:

Schedule B: 8481301090 (NAICS 332911)

Check valves of copper having a pressure rating of 850 kpa or over
SITC: 74730

Check 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.

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:

051080 - Faucets, bibcocks, gates valves
WCC:

576 - Metal and metal products, nos, (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.
ACC:

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

W - Rating variable
TCC:

Z - No special type of cargo code applicable

NSN Management Codes:

SOS
Sms
AAC
J
Quantity per pack
1
Unit of Measure
Ea
Shelf Life
N/A
Classification Control
U
MGMT_CTL
9b-----
Repariability

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $338.86 to $564.77..
Does NSN 4820-00-005-4903 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 4820-00-005-4903?
000054903 or 00-005-4903
Does NSN 4820-00-005-4903 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 4820-00-005-4903?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Jun 19, 1972