Model: NMP121-3/4IN-L2

Safety Relief Valve

Properties:

Pipe Size Accommodated
0.750 inches 2nd end
Flow Control Device
Disk
Bonnet Type
Inside screw
Bonnet Attachment Method
Threaded
Bolt Hole Quantity
4 1st end
Maximum Operating Temp
150.0 degrees fahrenheit 1st response
Maximum Operating Temp
425.0 degrees fahrenheit 2nd response
Valve Operation Method
Automatic
Flange Shape
Round with holes 1st end
Connection Type
Flange 1st end
Connection Type
Unthreaded internal pipe 2nd end
Maximum Operating Pressure
200.0 pounds per square inch 2nd response
Maximum Operating Pressure
400.0 pounds per square inch 1st response
Opening Pressure Setting
200.0 pounds per square inch
Outside Diameter
4.312 inches 1st end
Thickness
0.688 inches 1st end
Bolt Hole Diameter
0.562 inches 1st end
Bolt Circle Diameter
3.188 inches 1st end
Flange Face Design
Plain 1st end
Material
Bronze body
Material
Bronze flow control device
Material
Copper alloy stem
Material
Nickel alloy seat
Media For Which Designed
Steam 2nd response
Media For Which Designed
Water, fresh 3rd response
Media For Which Designed
Air 1st response
NSN
4820-01-321-1790
Part Number
NMP121-3/4IN-L2
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 NMP121-3/4IN-L2 NSN 4820-01-321-1790

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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