1. Home /
  2. Catalog /
  3. Nonpowered Valves /
  4. 4820-00-449-4526

4820-00-449-4526

Find complete technical information, availability, and procurement data for: 4820-00-449-4526

DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for NSN 4820-00-449-4526 to receive an up to date pricing and availability quote by email.

4820-00-449-4526
Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-00-449-4526
Item Name Code
05487
Assigment Date
12/12/1969 (56 years ago)

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.

200.0 fahrenheit single response maximum operating temp, flared (tube) all ends connection style, poppet flow control device, right-hand all ends thread direction, 3a all ends thread class

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class
3a all ends
Thread Direction
right-hand all ends
Flow Control Device
poppet
Maximum Operating Temp
200.0 fahrenheit single response
Connection Style
flared (tube) all ends
Valve Operation Method
automatic
Connection Type
threaded external tube all ends
Mounting Position
horizontal or vertical
Maximum Operating Pressure
3000.0 pounds per square inch single response
Nominal Thread Size
0.438 inches all ends
Seat Angle
37.0 degrees all ends
Nominal Outside Diameter Tube Accommodated
0.250 inches all ends
Material
aluminum alloy body
Material
rubber butadiene-acrylonitrile class nbr seat
Material
steel corrosion resisting flow control device
Media For Which Designed
air 1st response
Media For Which Designed
fuel/oil, hydrocarbon 2nd response
Media For Which Designed
hydraulic fluid, phosphate-ester base 3rd response
Media For Which Designed
water, fresh 4th response
Media For Which Designed
water-oil-gas 5th response
Surface Treatment
anodize
Surface Treatment Document And Classification
mil-a-8625,ty 2 mil spec single treatment response
Style Designator
straight thru
Thread Series Designator
unf all ends

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number Name
488-4D1-2 Check Valve

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4820-00-449-4526?
The FSCG of the NSN 4820-00-449-4526 is 4820
Does the NSN 4820-00-449-4526 have a Schedule B code assigned?
Yes, the Schedule B code is 8481309000
Does NSN 4820-00-449-4526 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 4820-00-449-4526 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-00-449-4526 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 4820-00-449-4526 was assigned to the Federal Catalog?
It was assigned 56 years ago, on Fri, Dec 12, 1969

Professional Distribution

Certified to meet the strict requirements of defense, aerospace, and hazardous materials distribution.

  • ITAR Registered
  • DDTC Registered
  • HAZMAT Certified
  • AS9120 Quality Standards
  • 100% Quality Inspections

You May Also Like

Browse other in-demand NSN parts sourced by professionals in defense, aerospace, and manufacturing sectors. Each component meets strict standards for quality and performance.

Pricing

Submit your request below and our team will respond quickly with up-to-date pricing, delivery estimates, and stock information:

ITAR Registered

In Stock

This item is currently available and ready for prompt shipment. Units may be offered in various conditions — new, surplus, or refurbished — and stored at verified global facilities. Request a quote to confirm current stock and delivery time.

New Surplus 4
New Material 1
Serviceable 1
As Removed 1
Total 7
Availability of this item was last updated on: 03/25/2026 11:03 AM EDT. Stock levels and pricing are subject to change.

Featured Parts

Explore our most requested parts, carefully selected based on customer demand and sourcing activity. Each listing provides current specifications, availability status, and item condition:

402220617000C3U
3040-01-316-0078
Manual Control Lever
4022208-4
1560-00-605-1876
Air Structural Component Support
4022208-5
1560-00-139-8415
Air Structural Component Support
4022208-6
1560-00-605-1876
Air Structural Component Support
402221
2915-00-611-6225
Servo Sleeve Cap
402221-1
5961-01-023-1691
Diode Semiconductor Device
402221-2
5961-01-120-8924
Diode Semiconductor Device
402221417000C3U
3040-01-316-0079
Manual Control Lever
402221PC62
4820-00-369-3629
Valve Seat
402222
5310-00-038-6735
Washer
402222-1
5905-00-203-0200
Film Fixed Resistor
402222-2
5905-01-021-7622
Film Fixed Resistor
402222-3
5905-01-037-9438
Film Fixed Resistor
402223
3040-00-891-2950
Mechanical Drive Housing
4022230
3040-00-365-0248
Rigid Connecting Link