6581-250LB

Safety Relief Valve

NSN 4820-00-467-4728

DEMIL
Shelf Life
UOM
NIIN
Demil:
NO
Shelf Life:
UOM:
NIIN:
004674728

Product Technical Spec.

Pipe Size Accommodated:
0.500 inches 1st end
Pipe Size Accommodated:
0.500 inches 2nd end
Thread Direction:
Right-hand 2nd end
Thread Direction:
Right-hand 1st end
Flow Control Device:
Disk
Bonnet Type:
Inside spring
Bonnet Attachment Method:
Threaded
Disk Loading Method:
Spring
Valve Discharge Flow Rate:
138.0 pounds per hour
Maximum Operating Temp:
406.0 degrees fahrenheit single response
Connection Style:
G46b plain (pipe) 2nd end
Connection Style:
G9 plain, optional en (pipe) 1st end
Connection Style:
Plain (pipe) 2nd end
Connection Style:
Plain, optional en (pipe) 1st end
Valve Operation Method:
Automatic
Connection Type:
Threaded external pipe 2nd end
Connection Type:
Threaded internal pipe 1st end
Features Provided:
Valve stem lock shield and pressure tight outlet side
Thready Qty Per Inch (tpi):
14 1st end
Thready Qty Per Inch (tpi):
14 2nd end
Maximum Operating Pressure:
250.0 pounds per square inch single response
Thread Size:
0.500 inches 1st end
Thread Size:
0.500 inches 2nd end
Opening Pressure Setting:
50.0 pounds per square inch
Material:
Copper alloy flow control device
Material:
Copper alloy 836 body
Material:
Copper alloy 836 seat
Material:
Steel stem
Material Specification:
Qq-c-390, alloy b5 federal specification single material response seat
Material Specification:
Qq-c-390, alloy b6 federal specification single material response body
Media For Which Designed:
Steam single response
Style Designator:
Angle
Thread Series Designator:
Npt 2nd end
Thread Series Designator:
Npt 1st end
NSN:
4820-00-467-4728
Item Name:
Cartridge,relief Valve
Cage Code:
37239

Cross Referenced Parts

Part Number
Cage
RNCC
RNVC
RNAAC
Status
MSDS
SADC
Part Number:
380019
Cage Code:
0ATF2
RNCC:
3
RNVC:
2
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
2601 1-2 50LB
Cage Code:
14959
RNCC:
3
RNVC:
2
RNAAC:
XX
Status:
A
MSDS:
SADC:
Part Number:
380019
Cage Code:
54108
RNCC:
5
RNVC:
9
RNAAC:
AX
Status:
A
MSDS:
SADC:

Part Identification

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05488
FIIG:
A046B0
Concept No.:
1
App. Key:
AP
Cond. Code:
1
Status:
A

Part Materials

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
127220
UFC:
64490
LTL:
77.5
LCL:
77.5
WCC:
594
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Pricing & Availability

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Privacy | Terms

Definition Definition of approved item name (AIN): "Relief Valve Cartridge"

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.

MOE Major Organizational Entities

Entity
DSOR
User:
CANADA Canada
DSOR:
Import / Export
  • Schedule B: 8481400000
  • SITC: 74740
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Classification: Safety or relief valves


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