Model: 668051

Safety Relief Valve
Description:

3b 1st end thread class, right-hand 1st end , poppet flow control device, spring disk loading method, 6.0 gallons per minute valve discharge flow rate.

Properties:

Thread Class
3b 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Valve Discharge Flow Rate
6.0 gallons per minute
Maximum Operating Temp
160.0 degrees fahrenheit single response
Connection Style
G4 gasket sea (boss) 1st end
Connection Style
Gasket sea (boss) 1st end
Valve Operation Method
Hydraulic
Connection Type
Threaded internal boss 1st end
Features Provided
Pressure tight outlet side
Thready Qty Per Inch (tpi)
16 1st end
Maximum Operating Pressure
3000.0 pounds per square inch single response
Thread Size
0.750 inches 1st end
Material
Aluminum alloy 2014 body
Material
Steel comp 440c flow control device
Material
Steel comp 440c seat
Media For Which Designed
Fuel/oil, hydrocarbon single response
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625, type 2 military specification single treatment response
Style Designator
A1 straight thru
Style Designator
Straight thru
Thread Series Designator
Unjf 1st end
NSN
4820-00-016-1070
Part Number
668051
Description
Valve,safety Relief
CAGE
98897

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 668051 NSN 4820-00-016-1070

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:
Z
ACC:
Equipment for Aircraft

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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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