NIF-1/2-ZP

View detailed technical data, stock status, and sourcing information for: NIF-1/2-ZP
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-046-8522

Item Name Code

05493

Assigment Date

08/25/1977 (48 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.

bulb mounting clamp furnished items, "angle give "adqm" or "adqn" if flanged one or two ends" body style, flared first end style designator, threaded external tube first end connection type, refrigerant 12 media for which designed

Product Characteristics

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

Body Style: "angle give "adqm" or "adqn" if flanged one or two ends"
Furnished Items: bulb mounting clamp
Media For Which Designed: refrigerant 12
First End Connection Type: threaded external tube
First End Style Designator: flared
First End Outside Diameter Tube Accommodated: 0.500 inches nominal
First End Thread Class: 2a
First End Thread Direction: right-hand
Second End Relationship With First End: not identical
Second End Connection Type: threaded external tube
Second End Style Designator: flared
Second End Outside Diameter Tube Accommodated: 0.250 inches nominal
Second End Thread Class: 2a
Second End Thread Direction: right-hand
First End Seat Angle In Deg: 45.0
Second End Seat Angle In Deg: 45.0
Flow Control Device: needle
End Connection Quantity: 2
Capillary Tube Length: 30.000 inches nominal
Bulb Length: 3.000 inches nominal
Bulb Diameter: 0.500 inches nominal
Valve Expansion Control Type: thermostatic
Valve Evaporator Temp Range Designation: low
Valve Pressure Limiting Device: not included
Bulb Media Type: refrigerant 12
Bulb Mounting Method: clamp
Valve Equalizer Location: internal
Refrigeration Capacity In Btu Per Hour: 6.0
Special Features: temp rating: -40.0 deg fahrenheit to -0.0 deg fahrenheit
Material: copper alloy body
Material: nickel alloy seat
Material: steel corrosion resisting flow control device
Surface Treatment: enamel outside

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
NIF-1/2-2P	Expansion Valve
NIF-1/2-ZP	Expansion Valve

FAQs

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

What is the FSCG of the NSN 4820-01-046-8522?

The FSCG of the NSN 4820-01-046-8522 is 4820

Does the NSN 4820-01-046-8522 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809050

Does NSN 4820-01-046-8522 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 4820-01-046-8522 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-046-8522 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 4820-01-046-8522 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Thu, Aug 25, 1977