Model: 53-A-38

Safety Relief Valve

Properties:

Flow Control Device
Disk or stem
Bonnet Type
Outside screw-yoke
Bonnet Attachment Method
Bolted
Disk Loading Method
Spring
Bolt Hole Quantity
8 1st end
Maximum Operating Temp
650.0 degrees fahrenheit single response
Valve Operation Method
Manual
Flange Shape
Round with holes 1st end
Connection Type
Flange 1st end
Mounting Facility
Bracket
Valve Size
3.000 inches
Maximum Operating Pressure
400.0 pounds per square inch single response
Outside Diameter
6.625 inches 1st end
Thickness
0.562 inches 1st end
First Connection Face To Centerline Distance
5.000 inches
Bolt Hole Diameter
0.625 inches 1st end
Second Connection Face To Centerline Distance
5.000 inches
Bolt Circle Diameter
5.500 inches 1st end
Flange Face Design
Raised straight 1st end
Raised Face Height
0.062 inches 1st end
Raised Face Diameter
4.750 inches 1st end
Material
Asbestos packing
Material
Stainless steel body
Material
Stainless steel stem
Material
Steel flow control device
Material
Steel uns j03008 seat
Style Designator
Angle flanged ends
NSN
4820-00-608-0971
Part Number
53-A-38
Description
Valve,safety Relief
CAGE
53553

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 53-A-38 NSN 4820-00-608-0971

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:
31.0 X 17.0 X 15.0
Paclk Weight:
116.0000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
M
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
F

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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