Model: 20313A51M

Safety Relief Valve

Special Features:

W/lifting lever

Properties:

Thread Direction
Right-hand 2nd end
Disk Loading Method
Spring
Bolt Hole Quantity
4 1st end
Maximum Operating Temp
425.0 degrees fahrenheit single response
Connection Style
G9 plain, optional en (pipe) 2nd end
Connection Style
Plain, optional en (pipe) 2nd end
Flange Shape
Round with holes 1st end
Connection Type
Flange 1st end
Connection Type
Threaded internal pipe 2nd end
Adjustable Pressure Range
+4.0/+9.0 pounds per square inch
Maximum Operating Pressure
100.0 pounds per square inch single response
Thread Size
1.000 inches 2nd end
Outside Diameter
4.250 inches 1st end
Bolt Hole Diameter
0.562 inches 1st end
Bolt Circle Diameter
3.125 inches 1st end
Flange Face Design
Plain 1st end
Material
Copper alloy stem
Material
Copper alloy body
Material
Nickel alloy seat
Media For Which Designed
Steam single response
Style Designator
Angle
Thread Series Designator
Npt 2nd end
NSN
4820-00-289-3818
Part Number
20313A51M
Description
Valve,safety Relief
CAGE
34496

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 20313A51M NSN 4820-00-289-3818

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05488
FIIG:
A046B0
Concept No.:
1
App. Key:
AP
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:
U
ESD:
ESD:
MMAC:
CRITL:
X

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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