Model: 20225 71T91PSI

Safety Relief Valve

Special Features:

Inlet flange cxn per ansi b16.5-150 4" size; outlet flange cxn per ansi b16.5-150 6" size; drawing 20225 in jedmics under obsolete kunkle cage 34494

Properties:

Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Bolted
Maximum Operating Temp
180.0 degrees fahrenheit single response
End Application
Nimitz class cvn
Valve Operation Method
Automatic or manual
Connection Type
Flange all ends
Valve Size
6.000 inches
Adjustable Pressure Range
+71.0/+91.0 pounds per square inch
Maximum Operating Pressure
150.0 pounds per square inch single response
First Connection Face To Centerline Distance
7.250 inches
Second Connection Face To Centerline Distance
7.000 inches
Part Name Assigned By Controlling Agency
Relief valve
Material
Steel comp 304 flow control device
Material
Steel comp 416 stem and steel comp 304 stem
Material
Steel uns j03002 body
Material Specification
Astm a479, type 304 assn standard single material response flow control device
Material Specification
Astm a582, type 416 assn standard 1st material response stem and astm a479, type 304 assn standard 2nd material response stem
Material Specification
Astma216, gr wcb assn standard single material response body
Furnished Items And Quantity
1 cap and 1 lever and 1 spring
NSN
4820-01-470-5289
Part Number
20225 71T91PSI
Description
Valve,safety Relief
CAGE
01343

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 20225 71T91PSI NSN 4820-01-470-5289

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

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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