Model: 20045

Safety Relief Valve

Special Features:

Cast body with integral flanges iaw 20042 -150 lbs, drain iaw ms16142 1/2 tube o.D.; ven iaw ms16142 1/2 tube o.D.

Properties:

Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Bolted
Disk Loading Method
Spring
Renewable Seat Ring Type
Pressed-in
Maximum Operating Temp
150.0 degrees fahrenheit single response
Valve Operation Method
Automatic
Flange Shape
Round all ends
Connection Type
Flange all ends
Features Provided
Manual override
Valve Size
3.000 inches
Maximum Operating Pressure
150.0 pounds per square inch single response
First Connection Face To Centerline Distance
5.000 inches
Second Connection Face To Centerline Distance
6.000 inches
Flange Face Design
Plain all ends
Part Name Assigned By Controlling Agency
3" relief valve, type 1792
Material
Copper alloy 922 body
Material
Nickel alloy flow control device
Furnished Items And Quantity
2 gasket
Specification Data
81349 - mil-v-20065 government specification and 81349 - mil-f-20042 government specification
Nondefinitive Specification/std Data
A-2 type and c class and 150 class
NSN
4820-01-530-7072
Part Number
20045
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 20045 NSN 4820-01-530-7072

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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