Model: 1751

Safety Relief Valve

Special Features:

Spring number: 75c

Properties:

Pipe Size Accommodated
0.250 inches all ends
Flow Control Device
Disk
Maximum Operating Temp
150.0 degrees fahrenheit single response
Valve Operation Method
Automatic
Connection Type
Unthreaded internal pipe all ends
Adjustable Pressure Range
+15.0/+19.0 pounds per square inch
Maximum Operating Pressure
400.0 pounds per square inch single response
Material
Copper alloy body
Material
Steel comp 316 stem
Material Specification
Astm b-61 assn standard single material response body
Material Specification
Qq-b-637 federal specification single material response stem
Material Specification
Qq-n-281 federal specification single material response flow control device
Material Specification
Qq-n-281 federal specification single material response seat
NSN
4820-01-181-1883
Part Number
1751
Description
Valve,safety Relief
CAGE
15187

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 1751 NSN 4820-01-181-1883

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:
A
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:
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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