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Safety Relief Valve

Model / MPN: 85500000 | NSN: 4820-01-439-5411
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
4820-01-439-5411
Sold in multiples of
1 EA
DEMIL
NO
Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Bolted
Disk Loading Method
Spring
Valve Discharge Flow Rate
347.0 gallons per minute
Bolt Hole Quantity
4 all ends
End Application
Strategic sealift conversion ships class
Valve Operation Method
Automatic
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Valve Size
1.000 inches
Maximum Operating Pressure
225.0 pounds per square inch single response
Opening Pressure Setting
60.0 pounds per square inch
Outside Diameter
4.750 inches 2nd end
Outside Diameter
5.875 inches 1st end
Thickness
0.875 inches 2nd end
Thickness
1.125 inches 1st end
First Connection Face To Centerline Distance
4.000 inches
Bolt Hole Diameter
0.875 inches 2nd end
Bolt Hole Diameter
1.000 inches 1st end
Second Connection Face To Centerline Distance
4.250 inches
Bolt Circle Diameter
3.250 inches 2nd end
Bolt Circle Diameter
4.000 inches 1st end
Flange Face Design
Raised straight all ends
Raised Face Height
0.250 inches all ends
Raised Face Diameter
1.375 inches 2nd end
Raised Face Diameter
2.000 inches 1st end
Material
Steel body
Material
Stainless steel flow control device
Material
Stainless steel seat
Media For Which Designed
Air single response
85500 Series Parts

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85500000 Cross Reference
  • 85500000-DS-G-74893 SH1D