Model: 629 1-1/4IN

Safety Relief Valve

Properties:

Pipe Size Accommodated
1.000 inches 2nd end
Pipe Size Accommodated
1.250 inches 1st end
Thread Direction
Right-hand 2nd end
Thread Direction
Right-hand 1st end
Flow Control Device
Disk
Bonnet Type
Inside screw
Bonnet Attachment Method
Bolted
Disk Loading Method
Spring
Valve Discharge Flow Rate
163.0 pounds per hour
Maximum Operating Temp
450.0 degrees fahrenheit single response
Connection Style
G46b plain (pipe) 2nd end
Connection Style
G9 plain, optional en (pipe) 1st end
Connection Style
Plain (pipe) 2nd end
Connection Style
Plain, optional en (pipe) 1st end
Valve Operation Method
Manual
Connection Type
Threaded external pipe 2nd end
Connection Type
Threaded internal pipe 1st 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
Adjustable Pressure Range
+1.0/+250.0 pounds per square inch
Maximum Operating Pressure
15.0 pounds per square inch single response
Thread Size
1.250 inches 1st end
Thread Size
1.000 inches 2nd end
Opening Pressure Setting
15.0 pounds per square inch
Material
Copper alloy seat
Material
Copper alloy stem
Material
Copper alloy body
Media For Which Designed
Steam single response
Style Designator
Angle
Thread Series Designator
Npt 2nd end
Thread Series Designator
Npt 1st end
NSN
4820-00-237-3409
Part Number
629 1-1/4IN
Description
Valve,safety Relief
CAGE
37239

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 629 1-1/4IN NSN 4820-00-237-3409

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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