Model: DD421S61-54PC18

Safety Relief Valve

Properties:

Flow Control Device
Poppet
Disk Loading Method
Spring
Bolt Hole Quantity
6 1st end
Maximum Operating Temp
425.0 degrees fahrenheit single response
Valve Operation Method
Automatic
Flange Shape
Round with holes 1st end
Connection Type
Flange 1st end
Adjustable Pressure Range
+4.5/+5.5 pounds per square inch
Maximum Operating Pressure
100.0 pounds per square inch single response
Outside Diameter
5.562 inches 1st end
Thickness
0.500 inches 1st end
Bolt Hole Diameter
0.562 inches 1st end
Bolt Circle Diameter
4.438 inches 1st end
Flange Face Design
Plain 1st end
Material
Copper alloy flow control device
Material
Copper alloy body
Material
Nickel alloy seat
Material
Nickel alloy stem
Media For Which Designed
Steam single response
Style Designator
Angle
NSN
4820-00-288-6935
Part Number
DD421S61-54PC18
Description
Valve,safety Relief
CAGE
53711

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 DD421S61-54PC18 NSN 4820-00-288-6935

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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