Model: D50429

Safety Relief Valve

Properties:

Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Bolted
Disk Loading Method
Spring
Renewable Seat Ring Type
Threaded
Bolt Hole Quantity
4 1st end
Maximum Operating Temp
250.0 degrees fahrenheit single response
Valve Operation Method
Automatic
Flange Shape
Round with holes 1st end
Connection Type
Flange 1st end
Connection Type
Unthreaded internal tube 2nd end
Adjustable Pressure Range
+164.0/+201.0 pounds per square inch
Maximum Operating Pressure
400.0 pounds per square inch single response
Outside Diameter
3.812 inches 1st end
Thickness
0.438 inches 1st end
Bolt Hole Diameter
0.562 inches 1st end
Bolt Circle Diameter
2.688 inches 1st end
Flange Face Design
Plain all ends
Outside Diameter Tube Accommodated
0.750 inches 2nd end
Material
Copper alloy 922 body
Material
Nickel alloy seat
Material
Nickel alloy flow control device
Material
Stainless steel stem
Material Specification
Astm a581 ty/303 assn standard single material response stem
Material Specification
Astm b61 assn standard single material response body
Material Specification
Qq-n-281 federal specification single material response flow control device
Material Specification
Qq-n-281 federal specification single material response seat
NSN
4820-01-258-5069
Part Number
D50429
Description
Valve,safety Relief
CAGE
34889

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 D50429 NSN 4820-01-258-5069

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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