Model: PWA51021-2

Safety Relief Valve

Properties:

Thread Class
3a 1st end
Thread Direction
Right-hand 2nd end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Valve Discharge Flow Rate
2.5 gallons per minute
Maximum Operating Temp
225.0 degrees fahrenheit single response
Connection Style
G42 flared (tube) 1st end
Connection Style
G46b plain (pipe) 2nd end
Valve Operation Method
Manual
Connection Type
Threaded external pipe 2nd end
Connection Type
Threaded external tube 1st end
Maximum Operating Pressure
50.0 pounds per square inch single response
Thread Size
0.250 inches 2nd end
Thread Size
0.562 inches 1st end
Seat Angle
37.0 degrees 1st end
Opening Pressure Setting
36.0 pounds per square inch
Outside Diameter Tube Accommodated
0.375 inches 1st end
Material
Aluminum alloy body
Material
Rubber synthetic seat
Material
Steel comp 416 flow control device
Material Specification
Fed standard 66, comp 416 federal standard single material response flow control device
Media For Which Designed
Water-oil-gas single response
Surface Treatment
Anodize
Thread Series Designator
Anpt 2nd end
Thread Series Designator
Unjf 1st end
NSN
4820-01-008-5105
Part Number
PWA51021-2
Description
Valve,safety Relief
CAGE
77445

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 PWA51021-2 NSN 4820-01-008-5105

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:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.2000lbs
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:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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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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