1. Home /
  2. Catalog /
  3. Nonpowered Valves /
  4. 4820-00-056-7677

4820-00-056-7677

Find complete technical information, availability, and procurement data for: 4820-00-056-7677

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 4820-00-056-7677 to receive an up to date pricing and availability quote by email.

4820-00-056-7677
Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-00-056-7677
Item Name Code
05488
Assigment Date
01/01/1963 (63 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.

right-hand 2nd end thread direction, 0.500 inches 2nd end nominal pipe size accommodated, right-hand 1st end thread direction, 0.750 inches 1st end nominal pipe size accommodated, disk flow control device

Product Characteristics

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

Nominal Pipe Size Accommodated
0.500 inches 2nd end
Nominal Pipe Size Accommodated
0.750 inches 1st end
Thread Direction
right-hand 1st end
Thread Direction
right-hand 2nd end
Flow Control Device
disk
Bonnet Type
inside spring
Bonnet Attachment Method
threaded
Disk Loading Method
spring
Valve Discharge Flow Rate
68.0 cubic feet per minute
Maximum Operating Temp
450.0 fahrenheit single response
Connection Style
plain (pipe) 2nd end
Connection Style
plain,optional end(pipe) 1st end
Valve Operation Method
manual
Connection Type
threaded external pipe 2nd end
Connection Type
threaded internal pipe 1st end
Features Provided
pressure tight outlet side
Maximum Operating Pressure
300.0 pounds per square inch single response
Nominal Thread Size
0.500 inches 2nd end
Nominal Thread Size
0.750 inches 1st end
Opening Pressure Setting
30.0 pounds per square inch
Material
copper alloy body
Material
copper alloy seat
Material
steel corrosion resisting stem
Media For Which Designed
air 1st response
Media For Which Designed
gas, natural 3rd response
Media For Which Designed
steam 2nd response
Style Designator
angle
Thread Series Designator
npt 2nd end
Thread Series Designator
npt 1st end

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
187-50L Safety Relief Valve
18750L Safety Relief Valve
1896-M40 Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-056-7677?
The FSCG of the NSN 4820-00-056-7677 is 4820
Does the NSN 4820-00-056-7677 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-00-056-7677 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 4820-00-056-7677 contain precious materials?
Precious metal content is unknown
Does NSN 4820-00-056-7677 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 4820-00-056-7677 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

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

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:

S70168-3
5365-01-232-6657
Shim
S70168-4
5365-01-230-6103
Shim
S70168-5
5365-01-234-3825
Shim
S7017
5365-00-948-7123
Shim
S7017-005
5365-00-948-7124
Shim
S7017-010
5365-00-948-7125
Shim
S7018
3110-00-142-4389
Tapered Roller Bearing Cup
S7019
5365-00-946-4214
Shim
S701D
5120-01-611-8056
Hand Shovel
S701ESXXZNOT
2540-01-484-6490
Vehicular Door Latch
S701XXLXMBXX
2540-01-674-6504
Vehicular Door Handle
S702
4940-00-213-9119
Strainer Screen
S702-06
8415-01-445-1004
Parachutist Helmet Liner
S702-20-4N
5935-01-064-6881
Electrical Connector Backshell
S702-2212A4
5935-00-487-8018
Electrical Connector Backshell