Model: A63256-3

Safety Relief Valve

Properties:

Thread Class
3b all ends
Thread Direction
Right-hand all ends
Flow Control Device
Piston
Bonnet Type
Inside spring
Bonnet Attachment Method
Threaded
Disk Loading Method
Spring
Valve Discharge Flow Rate
25.0 gallons per minute
Renewable Seat Ring Type
Pressed-in
Maximum Operating Temp
275.0 degrees fahrenheit single response
Connection Style
G4 gasket sea (boss) all ends
Connection Style
Gasket sea (boss) all ends
Valve Operation Method
Automatic
Connection Type
Threaded internal boss all ends
Features Provided
Bonnet packing
Thready Qty Per Inch (tpi)
12 all ends
Adjustable Pressure Range
+140.0/+150.0 pounds per square inch
Adjustable Pressure Range
+140.0 to 150.0 pounds per square inch
Maximum Operating Pressure
200.0 pounds per square inch single response
Thread Size
1.500 inches all ends
Material
Aluminum alloy body
Material
Steel flow control device
Material
Steel seat
Media For Which Designed
Hydraulic fluid, petroleum base single response
Surface Treatment
Enamel
Style Designator
Straight thru
Test Data Document
80378-205-15-2070 drawing (this is the basic governing drawing, such as a contractor drawing, original equipment manufacturer drawing, etc.; excludes any specification, standard or other document that may be referenced in a basic governing drawing)
Thread Series Designator
Un all ends
NSN
4820-00-078-3299
Part Number
A63256-3
Description
Valve,safety Relief
CAGE
81982

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 A63256-3 NSN 4820-00-078-3299

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:
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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