Model: 400

Safety Relief Valve

Special Features:

Flange has gasket groove

Properties:

Thread Direction
Right-hand 1st end
Flow Control Device
Stem or disk
Disk Loading Method
Spring
Renewable Seat Ring Type
Bolted
Bolt Hole Quantity
2 2nd end
Connection Style
G9 plain, optional en (pipe) 1st end
Connection Style
Plain, optional en (pipe) 1st end
Width
2.500 inches 2nd end
Length
2.500 inches 2nd end
Valve Operation Method
Automatic
Flange Shape
Rectangular with holes 2nd end
Connection Type
Flange 2nd end
Features Provided
Pressure tight outlet side
Thread Size
0.750 inches 1st end
Opening Pressure Setting
53.0 pounds per square inch
Thickness
2.500 inches 2nd end
Bolt Hole Diameter
0.278 inches 2nd end
Center To Center Distance Between Bolt Holes Along Length
1.938 inches 2nd end
Center To Center Distance Between Bolt Holes Along Width
1.938 inches 2nd end
Flange Face Design
Plain all ends
Material
Aluminum alloy body
Material
Aluminum alloy seat
Material
Rubber synthetic flow control device
Material
Stainless steel stem
Style Designator
Angle
Thread Series Designator
Npt 1st end
NSN
4820-00-727-5968
Part Number
400
Description
Valve,safety Relief
CAGE
00515

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 400 NSN 4820-00-727-5968

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:
SX
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:
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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