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- Model 12 - Lift Plug Valves
Model 12 -Lift Plug Valves
SchuF is the inventor of the Lift Plug Valve - the first double block and bleed switch and/or isolation valve. The original patent was received in 1914. Today, the Lift Plug is widely used in the Chemical, Refinery (including Delayed Coking, Hydrocracking, and Visbreaking), Polymer, Cement, Power and Mining industries.
Its simple and rugged design makes it suitable for severe applications at high temperatures or with highly abrasive or erosive materials. In the Delayed Coking industry, the SchuF lift Plug is utilised as a an Isolation and Switch valve. In visbreaking, cracking, hydroprocessing, distillation and deasphalting refinerary applications, the lift plug has proven to be an ideal isolation valve with many advantages over traditional ball valves and t-pieces.
In addition the valve has three lines of defence against sediment build up or fouling:
- Flushing is initiated during plug lifting and turning
- An integral drain valve option enabling sediment to be removed from the valve
- A retractable bottom plate that enables the valve to be cleaned in line in a very short period of time
The three factors together make the SchuF lift plug ideal for dirty, sticky or clumping media at high temperatures.
- Available with 2, 3 or 4 outlets
- Seat seal design ensures a perfect sea
- Seals are not worn during operation
- No dead spaces
- Integral Block and Bleed
- Available in high temperature and pressure designs
- Electric, pneumatic, and hydraulic actuation available
- Straight or Inverted Plug, full or reduced bore, round or oval
- Top or bottom entry for easy maintenance