Restrictor Check Valve

NSN: 4820-00-032-8391 | Model: 402681-3

A valve having an orifice in the poppet, disk, or the like, to permit restricted fluid flow when the valve is seated. It does not have a stem or provisions for pressure adjustments, and is similar to a valve, check with the exception of the orifice which permits fluid flow in more than one direction.

NSN Properties and Flags

NATO Stock Number

4820-00-032-8391

DEMIL

Thread Class

3a 1st end

Thread Direction

Right-hand 1st end

Aperture Diameter

0.055 inches

Flow Control Device

Cone

Connection Style

Flared (tube) 1st end

Connection Type

Threaded external tube 1st end

Thready Qty Per Inch (tpi)

18 1st end

Maximum Operating Pressure

1500.0 pounds per square inch single response

Thread Size

0.750 inches 1st end

Seat Angle

37.0 degrees 1st end

Outside Diameter Tube Accommodated

0.500 inches 1st end

Material

Rubber synthetic packing

Media For Which Designed

Hydraulic fluid, mineral base single response

Style Designator

Straight thru

Thread Series Designator

Un 1st end

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 4820-00-032-8391 Datasheet

Supply Class (FSC):

Nonpowered Valves

Cross Reference:

402681-3
1139387
402681-3
36020
1139387
GU8-2-2-8DR046

Cage Codes:

Honeywell International Inc. (CAGE 59364)
Boeing Company, The (CAGE 88277)
Signal Inc Allied (CAGE 77068)
Acoustical Labs Inc (CAGE 80107)
Boeing Company, The (CAGE 18355)
Harris Corporation (CAGE 24930)

Replacements:

4820-00-032-8391 replaces 4820-00-304-0287

Schedule B & Trade:

Schedule B: 8481309000 (NAICS 332911)

Check valves of materials other than copper, iron or steel
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

U - Precious metal content is unknown

ADPE

- Represents items with no adp components

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)
ACC:

A - Supplies and equipment for aircraft and aerial targets, including aircraft and maintenance parts, aircraft accessories, aircraft
ADC:

A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.
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 4820-00-032-8391 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Canada, Greece, and Turkey
What is the NIIN of NSN 4820-00-032-8391?
000328391 or 00-032-8391
Does NSN 4820-00-032-8391 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 4820-00-032-8391?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Jan 01, 1963