Model: 26J539PC52

Safety Relief Valve

Properties:

Pipe Size Accommodated
1.250 inches 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Threaded
Disk Loading Method
Spring
Bolt Hole Quantity
4 2nd end
Maximum Operating Temp
425.0 degrees fahrenheit single response
Connection Style
G9 plain, optional en (pipe) 1st end
Connection Style
Plain, optional en (pipe) 1st end
Valve Operation Method
Automatic or manual
Flange Shape
Round with holes 2nd end
Connection Type
Flange 2nd end
Connection Type
Threaded internal pipe 1st end
Valve Size
1.000 inches
Adjustable Pressure Range
+7.0/+25.0 pounds per square inch
Maximum Operating Pressure
100.0 pounds per square inch single response
Thread Size
1.250 inches 1st end
Outside Diameter
4.250 inches 2nd end
Thickness
0.438 inches 2nd end
First Connection Face To Centerline Distance
3.000 inches
Bolt Hole Diameter
0.562 inches 2nd end
Second Connection Face To Centerline Distance
1.906 inches
Bolt Circle Diameter
3.125 inches 2nd end
Flange Face Design
Plain 2nd end
Material
Copper alloy body
Material
Nickel alloy seat
Material
Nickel alloy stem
Material
Nickel alloy flow control device
Media For Which Designed
Steam single response
Style Designator
Angle flanged ends
Thread Series Designator
Npt 1st end
NSN
4820-00-446-3543
Part Number
26J539PC52
Description
Valve,safety Relief
CAGE
79500

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 26J539PC52 NSN 4820-00-446-3543

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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