Model: 77674-226

Safety Relief Valve

Properties:

Pipe Size Accommodated
0.250 inches 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Cone
Bonnet Type
Inside spring
Bonnet Attachment Method
Threaded
Disk Loading Method
Spring
Renewable Seat Ring Type
Pressed-in
Maximum Operating Temp
450.0 degrees fahrenheit single response
Connection Style
G46b plain (pipe) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded external pipe 1st end
Features Provided
Bonnet packing and pressure tight outlet side
Thready Qty Per Inch (tpi)
18 1st end
Power Drive Operating Pressure
1530.0 pounds per square inch
Adjustable Pressure Range
+1530.0/+2400.0 pounds per square inch
Maximum Operating Pressure
2000.0 pounds per square inch single response
Thread Size
0.250 inches 1st end
Opening Pressure Setting
2000.0 pounds per square inch
Material
Steel comp 303 body
Material
Steel comp 303 flow control device
Material
Steel comp 303 seat
Material Specification
Qq-s-764 federal specification single material response body
Material Specification
Qq-s-764 federal specification single material response flow control device
Material Specification
Qq-s-764 federal specification single material response seat
Thread Series Designator
Npt 1st end
NSN
4820-01-011-0644
Part Number
77674-226
Description
Valve,safety Relief
CAGE
86768

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 77674-226 NSN 4820-01-011-0644

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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