Model: 48A

Safety Relief Valve

Properties:

Pipe Size Accommodated
0.250 inches 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Valve Discharge Flow Rate
40.5 cubic feet per minute
Maximum Operating Temp
60.0 degrees fahrenheit single response
Connection Style
G46b plain (pipe) 1st end
Connection Style
Plain (pipe) 1st end
Valve Operation Method
Automatic or manual
Connection Type
Threaded external pipe 1st end
Features Provided
Valve stem lock shield
Thready Qty Per Inch (tpi)
18 1st end
Maximum Operating Pressure
70.0 pounds per square inch single response
Thread Size
0.250 inches 1st end
Opening Pressure Setting
70.0 pounds per square inch
Material
Copper alloy flow control device
Material
Copper alloy seat
Material
Copper alloy stem
Material
Copper alloy body
Media For Which Designed
Air single response
Thread Series Designator
Npt 1st end
Reference Number Differentiating Characteristics
As differentiated by pressure setting data and valve size
NSN
4820-00-449-3518
Part Number
48A
Description
Valve,safety Relief
CAGE
01343

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 48A NSN 4820-00-449-3518

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

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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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