Model: NMP-1556

Safety Relief Valve

Properties:

Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Union
Disk Loading Method
Spring
Bolt Hole Quantity
4 all ends
Maximum Operating Temp
750.0 degrees fahrenheit single response
Valve Operation Method
Automatic
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Valve Size
3.000 inches
Adjustable Pressure Range
+68.0/+78.0 pounds per square inch
Maximum Operating Pressure
200.0 pounds per square inch single response
Outside Diameter
7.500 inches 1st end
Outside Diameter
6.000 inches 2nd end
Thickness
0.750 inches 1st end
Thickness
0.937 inches 2nd end
First Connection Face To Centerline Distance
4.812 inches
Bolt Hole Diameter
0.750 inches all ends
Second Connection Face To Centerline Distance
4.750 inches
Bolt Circle Diameter
4.750 inches 2nd end
Bolt Circle Diameter
6.000 inches 1st end
Flange Face Design
Raised straight all ends
Raised Face Height
0.062 inches 1st end
Raised Face Height
0.312 inches 2nd end
Raised Face Diameter
3.375 inches 2nd end
Raised Face Diameter
6.000 inches 1st end
Material
Steel body
Material
Stainless steel flow control device
Material
Stainless steel seat
Material
Stainless steel stem
Media For Which Designed
Steam single response
NSN
4820-01-270-5764
Part Number
NMP-1556
Description
Valve,safety Relief
CAGE
75954

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 NMP-1556 NSN 4820-01-270-5764

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:
--
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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