Model: 488-4D27-2

Safety Relief Valve

Special Features:

Hydraulic fluid media; mounting position: horizontal and vertical; operating time: 28.000 seconds

Properties:

Thread Class
3a all ends
Thread Direction
Right-hand all ends
Flow Control Device
Poppet
Disk Loading Method
Spring
Renewable Seat Ring Type
Threaded
Maximum Operating Temp
200.0 degrees fahrenheit single response
Minimum Operating Temp
-65.0 degrees fahrenheit
Connection Style
G42 flared (tube) all ends
Valve Operation Method
Automatic
Connection Type
Threaded external tube all ends
Mounting Facility
Threaded fastener
Valve Size
0.125 inches
Thready Qty Per Inch (tpi)
20 1st end
Power Drive Operating Pressure
2.0 pounds per square inch
Maximum Operating Pressure
3000.0 pounds per square inch single response
Thread Size
0.437 inches all ends
Seat Angle
37.0 degrees all ends
Opening Pressure Setting
2.0 pounds per square inch
Face To Face Distance
2.125 inches
Outside Diameter Tube Accommodated
0.125 inches 1st end
Material
Aluminum alloy body
Material
Aluminum alloy seat
Material
Rubber synthetic flow control device and stainless steel flow control device
Media For Which Designed
Hydraulic fluid, petroleum base single response
Thread Series Designator
Unjf all ends
NSN
4820-01-173-6356
Part Number
488-4D27-2
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 488-4D27-2 NSN 4820-01-173-6356

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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