Butterfly valves are essential in applications that require a tight shut-off. The disc opens and closes with a 90-degree low-torque rotation and is suitable for any compatible application. They are preferred over other types of valves because they are less expensive and lighter in weight.
The stem centre deviates from the centre of the disc and valve in the double-offset structure. The valve disc can leave the valve seat quickly with this structure, reducing unnecessary over-compression and scraping between them.
The triple offset design eliminates flow path rubbing between the seat and seal ring, reducing seat and seal wear and extending cycle life.
PTFE-lined butterfly valves can withstand even the most corrosive chemicals.
VDM Control Solutions is a proud GEFA supplier in South Africa.
Two-piece ball valves are made of two separate pieces joined together by a threaded or bolt-and-flange assembly. On the other hand, a three-piece ball valve comprises two end caps and a body. The end caps are welded, threaded, or flanged to connect to the pipe on either side. PTFE-lined ball valves can withstand even the most corrosive chemicals. VDM Control Solutions is a proud GEFA supplier in South Africa.
Knife gate valves are primarily intended for on-off and isolation services in systems with a high suspended solids content. They are beneficial for handling slurry and viscous, corrosive, and abrasive media. The valves have a low-pressure drop in the fully open position, are simple to operate, light in weight, and cost-effective. VDM Control Solutions is a proud GEFA supplier in South Africa.
