W011683

View detailed technical data, stock status, and sourcing information for: W011683
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-176-4779

Item Name Code

05488

Assigment Date

01/02/1970 (56 years ago)

An automatic valve designed to relieve, automatically, accumulated air in various types of steam heating systems.

poppet flow control device, right-hand 1st end thread direction, 0.125 inches 1st end nominal pipe size accommodated, pressed-in renewable seat ring type, spring disk loading method

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: 0.125 inches 1st end
Thread Direction: right-hand 1st end
Flow Control Device: poppet
Disk Loading Method: spring
Renewable Seat Ring Type: pressed-in
Maximum Operating Temp: 200.0 celsius single response
Connection Style: plain (pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded external pipe 1st end
Thread Quantity Per Inch: 27 1st end
Adjustable Pressure Range: +0.5 to 140.0 pounds per square inch
Maximum Operating Pressure: 200.0 pounds per square inch single response
Nominal Thread Size: 0.125 inches 1st end
Opening Pressure Setting: 31.0 pounds per square inch
Material: copper and rubber ethylene-propylene class epm flow control device
Material: copper body
Material: copper seat
Surface Treatment: chromium
Style Designator: straight thru
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
562B1M31	Safety Relief Valve
P69104-90	Safety Relief Valve
W011683	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-176-4779?

The FSCG of the NSN 4820-00-176-4779 is 4820

Does the NSN 4820-00-176-4779 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-176-4779 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 4820-00-176-4779 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-176-4779 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 4820-00-176-4779 was assigned to the Federal Catalog?

It was assigned 56 years ago, on Fri, Jan 2, 1970