Model: PC578S42-251PC781

Safety Relief Valve

Special Features:

Diaphragm operated

Properties:

Disk Loading Method
Spring
Bolt Hole Quantity
4 1st end
Flange Shape
Round with holes 1st end
Connection Type
Flange 1st end
Adjustable Pressure Range
+0.0/+30.0 pounds per square inch
Maximum Operating Pressure
150.0 pounds per square inch single response
Outside Diameter
5.562 inches 1st end
Bolt Hole Diameter
0.562 inches 1st end
Bolt Circle Diameter
4.438 inches 1st end
Flange Face Design
Plain 1st end
Material
Copper alloy seat
Material
Copper alloy body
Style Designator
Angle
NSN
4820-00-289-4384
Part Number
PC578S42-251PC781
Description
Valve,safety Relief
CAGE
80064

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 PC578S42-251PC781 NSN 4820-00-289-4384

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:
77.5
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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