Model: 1809

Safety Relief Valve

Properties:

Pipe Size Accommodated
1.250 inches 1st end
Flow Control Device
Disk
Bonnet Type
Exposed spring
Bonnet Attachment Method
Union
Disk Loading Method
Spring
Bolt Hole Quantity
4 2nd end
Maximum Operating Temp
100.0 degrees fahrenheit 2nd response
Maximum Operating Temp
250.0 degrees fahrenheit 1st response
Valve Operation Method
Automatic
Flange Shape
Round with holes 2nd end
Connection Type
Unthreaded internal pipe 1st end
Adjustable Pressure Range
+33.0/+53.0 pounds per square inch
Outside Diameter
4.500 inches 2nd end
Thickness
0.438 inches 2nd end
Bolt Hole Diameter
0.562 inches 2nd end
Bolt Circle Diameter
3.375 inches 2nd end
Flange Face Design
Plain 2nd end
Material
Copper alloy stem
Material
Copper alloy body
Material
Nickel alloy seat
Material
Nickel alloy flow control device
Style Designator
Angle
Furnished Items And Quantity
1 nut
NSN
4820-00-541-4995
Part Number
1809
Description
Valve,safety Relief
CAGE
16497

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 1809 NSN 4820-00-541-4995

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:
A
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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