Safety Relief Valve

Model / MPN: 20158 475T525PSI | NSN: 4820-01-141-8847

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

4820-01-141-8847

Sold in multiples of

1 EA

DEMIL

Flow Control Device

Disk

Disk Loading Method

Spring

Bolt Hole Quantity

12 2nd end

Bolt Hole Quantity

16 1st end

Maximum Operating Temp

450.0 degrees fahrenheit single response

Valve Operation Method

Automatic

Flange Shape

Round with holes 1st end

Flange Shape

Round with holes 2nd end

Connection Type

Flange 2nd end

Connection Type

Flange 1st end

Valve Size

10.000 inches

Adjustable Pressure Range

+475.0/+525.0 pounds per square inch

Maximum Operating Pressure

600.0 pounds per square inch single response

Outside Diameter

14.000 inches 2nd end

Outside Diameter

20.000 inches 1st end

Thickness

1.875 inches 2nd end

Thickness

2.500 inches 1st end

First Connection Face To Centerline Distance

10.500 inches

Bolt Hole Diameter

1.250 inches 1st end

Bolt Hole Diameter

1.000 inches 2nd end

Second Connection Face To Centerline Distance

9.438 inches

Bolt Circle Diameter

11.500 inches 2nd end

Bolt Circle Diameter

17.000 inches 1st end

Flange Face Design

Raised straight 1st end

Flange Face Design

Plain 2nd end

Raised Face Height

0.250 inches 1st end

Raised Face Diameter

12.750 inches 1st end

Material

Steel body

Material

Steel comp 416 stem

Material

Steel flow control device

Material Specification

Aisi 416 assn standard single material response stem

Material Specification

Ams 5643 assn standard single material response flow control device

475T Series Parts

Solicitations

Solicitation	Description	Qty	UOM	Close Date
SPE7MC18T1344	Valve, Safety Relief	1	EA	11/06/2017
SPE7MC18T7994	Valve, Safety Relief	2	EA	04/09/2018
SPE7MC19T145L	Valve, Safety Relief	1	EA	08/19/2019
SPE7M019T144E	Valve, Safety Relief	1	EA	09/03/2019
SPE7MC19T166F	Valve, Safety Relief	1	EA	09/06/2019
SPE7MC20Q0007	Valve, Safety Relief	2	EA	10/21/2019

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

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ISO 9001:2015 + AS9120B
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20158 475T525PSI Cross Reference

5055RA140009 475T525PSI
20158 475T525PSI
5055RA140009 475T525PSI