Model: 18B7866

Safety Relief Valve

Properties:

Thread Class
2b 3rd end
Thread Direction
Right-hand 2nd end
Thread Direction
Right-hand 1st end
Thread Direction
Right-hand 3rd end
Flow Control Device
Piston
Bonnet Type
Inside screw
Bonnet Attachment Method
Threaded
Connection Style
G4 gasket sea (boss) 3rd end
Connection Style
G9 plain, optional en (pipe) 1st end
Connection Style
G9 plain, optional en (pipe) 2nd end
Connection Style
Gasket sea (boss) 3rd end
Connection Style
Plain, optional en (pipe) 1st end
Connection Style
Plain, optional en (pipe) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded internal boss 3rd end
Connection Type
Threaded internal pipe 1st end
Connection Type
Threaded internal pipe 2nd end
Mounting Facility
Bracket
Thready Qty Per Inch (tpi)
12 3rd end
Thread Size
0.500 inches 1st end
Thread Size
0.500 inches 2nd end
Thread Size
1.062 inches 3rd end
First Connection Face To Centerline Distance
1.500 inches
Material
Iron cast body
Material
Steel flow control device
Style Designator
Angle
Thread Series Designator
Npt 2nd end
Thread Series Designator
Npt 1st end
Thread Series Designator
Un 3rd end
NSN
4820-00-200-8124
Part Number
18B7866
Description
Valve,safety Relief
CAGE
16662

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 18B7866 NSN 4820-00-200-8124

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:
--
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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