200137 PIECE 251SET250

View detailed technical data, stock status, and sourcing information for: 200137 PIECE 251SET250
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-052-0070

Item Name Code

05488

Assigment Date

12/09/1977 (48 years ago)

inside spring bonnet type, threaded bonnet attachment method, right-hand all ends thread direction, disk flow control device, 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.

Thread Direction: right-hand all ends
Flow Control Device: disk
Bonnet Type: inside spring
Bonnet Attachment Method: threaded
Disk Loading Method: spring
End Item Identification: aux/amphib ship maint strategy program
Connection Style: plain (tube) all ends
Valve Operation Method: automatic
Connection Type: threaded external tube 2nd end
Connection Type: threaded external tube 1st end
Thread Quantity Per Inch: 11 1st end
Thread Quantity Per Inch: 14 2nd end
Maximum Operating Pressure: 230.0 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: 200.0 pounds per square inch
Material: copper alloy body
Material: copper alloy stem
Material: steel comp 303 seat
Material: steel comp 316 flow control device
Material Document And Classification: aisi 303 assn std single material response seat
Material Document And Classification: aisi 316 assn std single material response flow control device
Material Document And Classification: astm b16 assn std single material response stem
Material Document And Classification: qq-c-390,alloy d4/d/ fed spec single material response body
Media For Which Designed: air single response
Style Designator: angle
Thread Series Designator: uns all ends
Furnished Items And Quantity: 2 nut and 2 tailpiece

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-01-105-1953	No Name Available	08/01/2007

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
1/287CS165SET200	Safety Relief Valve
200137 PIECE 251SET200	Safety Relief Valve
200137 PIECE 251SET250	Safety Relief Valve
7093B 231T270PSI	Safety Relief Valve
7093BSET200	Safety Relief Valve
87-CS-165 231T270 MOD	Safety Relief Valve
87-CS-165-186T230MODML185	Safety Relief Valve
87CS165-186T0230PSI	Safety Relief Valve
87CS165MOD186T230PSI	Safety Relief Valve
9521 231 T0 270	Safety Relief Valve
9521-M0D231T270	Safety Relief Valve
9521-MOD231T270SET250PSI	Safety Relief Valve
9521SET200	Safety Relief Valve
D42S-186T230-8-12	Safety Relief Valve
D42UU-09H-1/2-3/4	Safety Relief Valve
D42UU-11 1/2 X 3/4 IN	Safety Relief Valve
D42UU-186T230-1/2X3/4	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-052-0070?

The FSCG of the NSN 4820-01-052-0070 is 4820

Does the NSN 4820-01-052-0070 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-052-0070 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 4820-01-052-0070 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-052-0070 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 4820-01-052-0070 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Fri, Dec 9, 1977