Model: 20158 475T525PSI

Safety Relief Valve

Properties:

Flow Control Device
Disk
Disk Loading Method
Spring
Bolt Hole Quantity
12 2nd end
Bolt Hole Quantity
16 1st end
Maximum Operating Temp
450.0 degrees fahrenheit single response
Valve Operation Method
Automatic
Flange Shape
Round with holes 1st end
Flange Shape
Round with holes 2nd end
Connection Type
Flange 2nd end
Connection Type
Flange 1st end
Valve Size
10.000 inches
Adjustable Pressure Range
+475.0/+525.0 pounds per square inch
Maximum Operating Pressure
600.0 pounds per square inch single response
Outside Diameter
14.000 inches 2nd end
Outside Diameter
20.000 inches 1st end
Thickness
1.875 inches 2nd end
Thickness
2.500 inches 1st end
First Connection Face To Centerline Distance
10.500 inches
Bolt Hole Diameter
1.250 inches 1st end
Bolt Hole Diameter
1.000 inches 2nd end
Second Connection Face To Centerline Distance
9.438 inches
Bolt Circle Diameter
11.500 inches 2nd end
Bolt Circle Diameter
17.000 inches 1st end
Flange Face Design
Raised straight 1st end
Flange Face Design
Plain 2nd end
Raised Face Height
0.250 inches 1st end
Raised Face Diameter
12.750 inches 1st end
Material
Steel body
Material
Steel comp 416 stem
Material
Steel flow control device
Material Specification
Aisi 416 assn standard single material response stem
Material Specification
Ams 5643 assn standard single material response flow control device
NSN
4820-01-141-8847
Part Number
20158 475T525PSI
Description
Valve,safety Relief
CAGE
15187

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 20158 475T525PSI NSN 4820-01-141-8847

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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