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.:
1
App. Key:
AR
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

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:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
127220
UFC:
64490
LTL:
77.5
LCL:
--
WCC:
594
TCC:
Z
SHC:
9
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

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