1970C

Safety Relief Valve

NSN 4820-00-814-1958

DEMIL
Shelf Life
UOM
NIIN
Demil:
NO
Shelf Life:
UOM:
NIIN:
008141958

Technical Specifications of NSN

Pipe Size Accommodated:
1.000 inches 2nd end
Pipe Size Accommodated:
1.500 inches 1st 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:
90.0 gallons per minute
Maximum Operating Temp:
400.0 degrees fahrenheit single response
Connection Style:
G9 plain, optional en (pipe) 1st end
Connection Style:
G9 plain, optional en (pipe) 2nd end
Valve Operation Method:
Automatic
Connection Type:
Threaded internal pipe 1st end
Connection Type:
Threaded internal pipe 2nd end
Features Provided:
Pressure tight outlet side
Thready Qty Per Inch (tpi):
11-1/2 1st end
Thready Qty Per Inch (tpi):
11-1/2 2nd end
Maximum Operating Pressure:
3000.0 pounds per square inch single response
Thread Size:
1.500 inches 1st end
Thread Size:
1.000 inches 2nd end
Opening Pressure Setting:
350.0 pounds per square inch
Material:
Steel
Material Specification:
66 federal standard single material response seat and aisi 304/sae 30304 assn standard single material response seat
Material Specification:
66 federal standard single material response stem and aisi 414/sae 51414 assn standard single material response stem
Material Specification:
66 federal standard single material response body and aisi 304/sae 30304 assn standard single material response body
Material Specification:
66 federal standard single material response flow control device and aisi 304/sae 30304 assn standard single material response flow control device
Media For Which Designed:
Water-oil-gas single response
Thread Series Designator:
Npt 2nd end
Thread Series Designator:
Npt 1st end
NSN:
4820-00-814-1958
Item Name:
Velocity Fuse
Cage Code:
16497

Other Related Parts

No other part numbers with same form, fit, and function found.

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

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Privacy | Terms

Definition Definition of approved item name (AIN): "Velocity Fuse"

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:
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION National Aeronautics and Space Administration
DSOR:
User:
ITALY Italy
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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