Model: 2251 1IN. 66T75PSI

Safety Relief Valve

Properties:

Flow Control Device
Disk
Disk Loading Method
Spring
Bolt Hole Quantity
4 all ends
Maximum Operating Temp
500.0 degrees fahrenheit single response
Valve Operation Method
Automatic
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Valve Size
1.000 inches
Adjustable Pressure Range
+66.0/+75.0 pounds per square inch
Outside Diameter
4.250 inches all ends
Thickness
0.562 inches all ends
First Connection Face To Centerline Distance
3.500 inches
Bolt Hole Diameter
0.625 inches all ends
Second Connection Face To Centerline Distance
3.250 inches
Bolt Circle Diameter
3.125 inches all ends
Flange Face Design
Raised straight all ends
Raised Face Height
0.062 inches all ends
Raised Face Diameter
1.938 inches all ends
Material
Steel comp 303 flow control device
Material
Steel comp 303 seat
Material
Steel comp 303 stem
Material
Steel uns j03002 body
NSN
4820-01-395-5284
Part Number
2251 1IN. 66T75PSI
Description
Valve,safety Relief
CAGE

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 2251 1IN. 66T75PSI NSN 4820-01-395-5284

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:
Trailers/Vehicles

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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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