WMP™ Welded Muffled Plug Rupture Disc Assembly

WMP™ Welded Muffled Plug Rupture Disc Assembly


The WMP™ Welded Muffled Plug Rupture Disc Assembly is a single use unit that is threaded into a pressure system. The rupture disc assembly is designed to relieve the pressure of the process media in an over pressure condition to protect equipment, personnel and the environment from catastrophic failure of the pressure equipment or system. It is designed for applications which discharge to atmosphere at the rupture disc location. 
The WMP Rupture Disc assembly is a solid metal tension acting rupture disc that is welded to a threaded outlet body and inlet ring. The outlet body has a hexagon shape head with six holes in the side of the hexagon to reduce reaction forces after the rupture disc has burst. The rupture disc is welded to the outlet body and inlet ring for a bubble-tight seal. These rupture disc assemblies are designed to be installed into a threaded port.

The highly versatile WMP Rupture Disc is available with a large range of burst pressures and temperatures, and can be used in a wide range of applications in many different industries, some of which include:

Hydraulic Systems:
- Actuators
- Accumulators
- Pumps
- A/C Systems
- Braking Systems
- High Pressure Water Cleaning Systems

Pneumatic Systems:
- Actuators
- Sample Bottle - Gas Cylinders
- Test Stands
- A/C Systems
- Gauge Panel Protection
- Overinflation Protection

-  Simple to install
-  Not torque sensitive
-  Single use device which is discarded after the rupture disc bursts
-  Welded to ensure a bubble-tight seal



Code compliance, when requested:
      •MPT, BSPT and BSPP connections available with ASME compliance
      •All thread connection options available with CE marking

Offered with industry standard male threaded connections:
      MPT (Male NPT ASME B1.20.1), SAE (J1926/3), BSPT (BS21) and BSPP (ISO 228-1)

Standard Outlet Materials*:
    316 SS/316L SS

Standard Rupture Disc Materials:
    316 SS/316L SS, Nickel, INCONEL® and HASTELLOY® C

Standard Inlet Ring Materials:
    316 SS/316L SS, Nickel, INCONEL® and HASTELLOY® C

*Other materials may be available, contact the factory or your Representative for more details


Nominal Size Range: 0.125" - 1" (3mm - 25mm)

Burst Pressure Range: 300psig - 15000psig (20,7barg - 1034barg)

Recommended Operating Ratio: 70% of the rupture disc's rated (stamped) burst pressure.

Seating Configuration: Flat Seat

Service: Liquid or Gas

B.D.I.® Alarm System Compatible?: No

ASME Code Symbol Stamp Available? : No


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