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Safety Relief Valve

Model / MPN: HF16649-11 | NSN: 4820-00-972-0230
ITAR Registered seal

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.

Product Details
NATO Stock Number
4820-00-972-0230
Sold in multiples of
1 EA
DEMIL
DEMIL/MLI
Pipe Size Accommodated
0.125 inches 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Ball
Renewable Seat Ring Type
Pressed-in
Connection Style
G46b plain (pipe) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded external pipe 1st end
Maximum Operating Pressure
80.0 pounds per square inch single response
Thread Size
0.125 inches 1st end
Material
Aluminum alloy 2024 seat
Material
Aluminum alloy 2024 stem
Material
Aluminum alloy 2024 body
Material
Stainless steel flow control device
Material Specification
Qq-a-225/6, alloy 2024 federal specification single material response body
Material Specification
Qq-a-225/6, alloy 2024 federal specification single material response seat
Material Specification
Qq-a-225/6, alloy 2024 federal specification single material response stem
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625, type 1 military specification single treatment response
Thread Series Designator
Npt 1st end
HF16649 Series Parts
Solicitations
Solicitation Description Qty UOM Close Date
SPE7M116T1474 Valve, Safety Relief 2 EA 10/19/2015
SPE7MC17T5153 Valve, Safety Relief 4 EA 12/16/2016
SPE7MC17T6276 Valve, Safety Relief 6 EA 12/29/2016
SPE7MC19T042Q Valve, Safety Relief 9 EA 06/17/2019
SPE7MC19T074B Valve, Safety Relief 8 EA 07/05/2019
SPE7MC20Q0232 Valve, Safety Relief 17 EA 01/16/2020
SPE7MC20T4782 Valve, Safety Relief 3 EA 02/18/2020
SPE7MC20T5487 Valve, Safety Relief 20 EA 03/02/2020
SPE7M121T074K Valve, Safety Relief 1 EA 03/15/2021

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HF16649-11 Cross Reference
  • 16649-11
  • 10658298
  • 16649-11