Lift Plug Valves
SchuF is the inventor of the Lift Plug Valve - the first double block and bleed switch and/or isolation valve.
Model 12 - "IsoPlug" - Lift Plug Valve, Photo:©SchuF
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.
How a SchuF Lift Plug Valve works
See how the SchuF Lift Lift Plug works and how the valve can be flushed while the process is running
Lift Plug Valve Applications
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.
This is due to the fact that the seals do not wear as the plug is lifted before turning.
Model 12 Lift Plug Valves, Photos:©SchuF
In addition the valve has three lines of defence against sediment build up or fouling:
1. Flushing is initiated during plug lifting and turning
2. An integral drain valve option enabling sediment to be removed from the valve
3. 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.
Characteristics of SchuF Plug Valves
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
The original Lift Plug from 1914 Lift Plug with inverted Plug
For further information or pricing please contact us at:
Tel. +49 6198 571 110 or http://www.schuf.com/contact-info