Model: 20185

Safety Relief Valve

Special Features:

As differentiated by the end connection type and adjustable pressure range requirements

Properties:

Flow Control Device

Disk

Bonnet Type

Inside spring

Bonnet Attachment Method

Bolted

Disk Loading Method

Spring

Renewable Seat Ring Type

Threaded

Bolt Hole Quantity

8 all ends

Maximum Operating Temp

250.0 degrees fahrenheit single response

Valve Operation Method

Automatic

Flange Shape

Round with holes all ends

Connection Type

Flange all ends

Valve Size

3.000 inches

Adjustable Pressure Range

+121.0 to 135.0 pounds per square inch

Maximum Operating Pressure

400.0 pounds per square inch single response

Outside Diameter

8.125 inches all ends

Thickness

0.938 inches all ends

First Connection Face To Centerline Distance

6.000 inches

Bolt Hole Diameter

0.812 inches all ends

Second Connection Face To Centerline Distance

6.000 inches

Bolt Circle Diameter

6.562 inches all ends

Flange Face Design

Plain all ends

Material

Nickel alloy seat

Material

Nickel alloy stem

Style Designator

C1a angle flanged ends

Style Designator

Angle flanged ends

NSN

4820-00-464-2500

Part Number

20185

Description

Valve,safety Relief

CAGE

01343

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.

Part 20185 NSN 4820-00-464-2500

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

05488

FIIG:

A046B0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

127220

UFC:

64490

LTL:

77.5

LCL:

WCC:

594

TCC:

SHC:

ACC:

Trailers/Vehicles

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Schedule B and Export

Schedule B: 8481400000
SITC: 74740
End Use: Industrial machines, other
NAICS: 332911
USDA: 1

Freight Class: Safety or relief valves