Model: 526A

Safety Relief Valve

Properties:

Thread Class
3a 1st end
Thread Direction
Right-hand all ends
Flow Control Device
Poppet
Bonnet Type
Inside spring
Bonnet Attachment Method
Integral
Disk Loading Method
Spring
Maximum Operating Temp
200.0 degrees fahrenheit single response
Connection Style
G42 flared (tube) 1st end
Connection Style
G46b plain (pipe) 2nd end
Connection Style
Flared (tube) 1st end
Connection Style
Plain (pipe) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded external pipe 2nd end
Connection Type
Threaded external tube 1st end
Features Provided
Pressure tight outlet side
Maximum Operating Pressure
450.0 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
450.0 pounds per square inch
Material
Copper alloy
Media For Which Designed
Refrigerant 12 single response
Style Designator
Angle
Thread Series Designator
Npt 2nd end
Thread Series Designator
Unf 1st end
NSN
4820-00-116-3911
Part Number
526A
Description
Valve,safety Relief
CAGE
28193

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 526A NSN 4820-00-116-3911

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
050855
UFC:
29290
LTL:
RATING VARIABLE
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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