Aerospace Hardware Store

Aerospace

Hardware

4820-00-137-8240

Air Expansion Valve Assy

Specifications, compliance details, and sourcing options for this NSN. Request a quote to confirm availability, pricing, and lead time.

Request for Quote

Send us a request for quote using the form below. Our team will promptly provide you with the latest pricing and availability details.

AS9120 ISO9001 Aviation Suppliers Association Global Shipping

Featured Parts

57715K44
5355-01-577-3246
Knob
57716
5325-01-272-1188
Retaining Ring
577166-1
5305-00-917-8276
Socket Head Cap Screw
57717
5360-01-352-1196
Compression Helical Spring
57717-3 PIECE 45
5360-01-304-2487
Flat Spring
5771780
4820-01-305-3868
Plug Valve
5771785
5340-01-594-5158
Mounting Plate
5771788
5342-01-594-1369
Spec Hois Structure

Need Assistance?

Our catalog is extensive, but we understand that sometimes specific needs might not be immediately available. If you could not find the exact products you were searching for, we are here to help!

Contact us directly, and our team will assist you in finding the perfect solution for your requirements.

Contact Us

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

Official Item Classification

Name
Air Expansion Valve Assy
(NSN) National Stock Number
4820-00-137-8240
(FSG) Federal Supply Group
48 Valves
(FSC) Federal Supply Classification
4820 Nonpowered Valves
(INC) Item Name Code
77777
(FIIG) Federal Item Identification Guide
A23900
Date
07/21/1971 (55 years ago)

assy consists of 1 valve body,1 valve pipe,1 packing box,1 spindle,1 lock nut,1 packing gland,1 packing nut,1 dial indicator,1 hand wheel,3 screws,1 faster,1 set orings,1 flange assy,1 mounting plate,1 h.p. pipe; unscrewing the packing nut with the valve under pressure will result in the valve stem being blown out causing possible injury general characteristics item description

Specs & Compatibility

General Characteristics Item Description

assy consists of 1 valve body,1 valve pipe,1 packing box,1 spindle,1 lock nut,1 packing gland,1 packing nut,1 dial indicator,1 hand wheel,3 screws,1 faster,1 set orings,1 flange assy,1 mounting plate,1 h.p. pipe; unscrewing the packing nut with the valve under pressure will result in the valve stem being blown out causing possible injury

Regulatory Compliance

Precious Metals Indicator
A

Item does not contain precious metal.

Criticality Code
X

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

Hazardous Metals Indicator
N

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

Pseudo Item Name Code

1650668

Related Hardware Products

Part Number Description
D5583-40 Air Expansion Valve Assy

Frequently Asked Questions

What is the FSCG of the NSN 4820-00-137-8240?
The FSCG of the NSN 4820-00-137-8240 is 4820
Does the NSN 4820-00-137-8240 have a Schedule B code assigned?
Yes, the Schedule B code is 8481909090
Does NSN 4820-00-137-8240 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 4820-00-137-8240 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-00-137-8240 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 4820-00-137-8240 was assigned to the Federal Catalog?
It was assigned 55 years ago, on Wed, Jul 21, 1971