B51019

View detailed technical data, stock status, and sourcing information for: B51019
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-148-8616

Item Name Code

10958

Assigment Date

06/13/1973 (53 years ago)

A valve consisting of a single deadweight loaded disk, or two deadweight loaded disks each with a seperate seat. It is specifically designed for the relief of small pressure and vacuum conditions within a tank or other container to or from the atmosphere. The center of a single deadweight loaded disk may contain a spring loaded disk forming an additional seat or aperture. It may be spring loaded and/or equipped with a manual unloader on either the pressure or vacuum side. Exclude valve, vacuum breaking.

single connection, straight flow body style, raised face flange first end connection type, raised first end style designator, air media for which designed, 3.469 inches nominal first end flange outside diameter

Product Characteristics

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

First End Flange Outside Diameter: 3.469 inches nominal
Body Style: single connection, straight flow
Media For Which Designed: air
First End Connection Type: raised face flange
First End Style Designator: raised
First End Raised Face Height: 0.475 inches nominal
First End Raised Face Diameter: 1.625 inches nominal
First End Flange Shape Style: round w/o bolt holes
First End Flange Thickness: 0.075 inches nominal
Flow Control Device: disk, circular
End Connection Quantity: 1
Disk Loading Method: spring
Valve Venting Design Type: atmospheric
Special Features: flange is molded rubber
Material: plastic flow control device
Material: steel corrosion resisting body
Material: steel corrosion resisting seat

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
4820PL1341056	Gaseou Pressure Equalizing Valve
710-62	Gaseou Pressure Equalizing Valve
B-51019	Gaseou Pressure Equalizing Valve
B51019	Gaseou Pressure Equalizing Valve
PRV-300	Gaseou Pressure Equalizing Valve
WMP730R-7	Gaseou Pressure Equalizing Valve

FAQs

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

What is the FSCG of the NSN 4820-00-148-8616?

The FSCG of the NSN 4820-00-148-8616 is 4820

Does the NSN 4820-00-148-8616 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809050

Does NSN 4820-00-148-8616 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 4820-00-148-8616 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-148-8616 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 4820-00-148-8616 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Wed, Jun 13, 1973