Model: 53-20F

Safety Relief Valve

Special Features:

Pressure relief 3.0 psi; vacuum relief 0.50 psi

Properties:

Flow Control Device

Disk

End Application

Onboard 225 ft wlb coast guard vessels

Valve Operation Method

Automatic

Flange Shape

Round with holes 1st end

Connection Type

Flange 1st end

Flange Face Design

Plain 1st end

Material

Bronze body

NSN

4820-01-431-9004

Part Number

53-20F

Description

Valve,safety Relief

CAGE

09032

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 53-20F NSN 4820-01-431-9004

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:

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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