Model: 577T4D1

Pressure And Temper Relief Valve

Special Features:

Goes on photonic mast. Adjustable cracking pressure factory pre-set @ 1psi designed to vent to atomosphere. Polytetrafluoroethylene seal material. End connection is 1/4in male straight thread as4395 (ms33656 with cone point removed- inlet only). Burst deflection cap not recommended for cracking pressures below 2psi.

Properties:

Body Material

Steel, federal standard 66, aisi 303/sae 30303

Tempurature Rating

400.0 degrees fahrenheit and -100.0 degrees fahrenheit

Media For Which Designed

Any acceptable

First End Style Designator

Flared

Flow Control Device

Poppet

Opening Pressure Setting

1.0 pounds per square inch

Tempurature Adjustability

Not adjustable

End Application

Los angeles class ssn

Part Name Assigned By Controlling Agency

500 series adjustable popoff & inline relief valve

NSN

4820-01-500-2453

Part Number

577T4D1

Description

Valve,relief,pressure And Temper

CAGE

91816

A valve designed to release under excessive pressure and/or excessive temperature by opening at a predetermined pressure and/or temperature. Thermostatically operated valves close when the pressure is relieved or the temperature is reduced. Fusible plug valves require replacement of the plug. See also valve, safety relief and valve, regulating. Temperature.

Part 577T4D1 NSN 4820-01-500-2453

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

16996

FIIG:

A07100

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