Introduction:

Typically, slurry knife gate valve manufacturers usually design the valve in such a way that it isolates the slurry flow even in one of the most challenging processing conditions. The bi-directional flow of the valve tolerates the backflow while the sleeves made of elastomer present on the both sides of the gate provide a tighter shut off mechanism.

The slurry knife gate valve manufacturers follows the concept of the ease of maintenance since the body of the valve is casted in a single piece which usually eliminates the need for sealing in between the halves of valve body. The distribution of the load in ring is integrated into these valve sleeves which contain only two service parts; secondary seal and the ring sleeves.

Valve Design:

A heavy-duty knife gate valve should be specially designed to offer a superior performance while giving a low downtime for heavy-duty usage, high pressure loads, higher solid concentration materials, corrosive slurry applications that are erosive-abrasive that are generally seen in the tailing lines of the concentrate slurry transport pipelines and the mineral ore concentration plants.

A single casting designed valve body contains a two field-replaceable elastomer sleeves as mentioned earlier which would be a full port bi-directional knife gate valve offering bubble tight working which is suitable for working under heavy pressures of up to a 20 bar. They also withstand a slurry temperature of up to 80ºC. The sleeve present on either side of the blade which are removable provide the actual bi-directional bubble tight sealing, with eliminating contact of the parts with the slurry.

Valve Working:

Generally, the rubber ring sleeves are matched with the stiffener ring by placing in the valve housing in order to seal them against each other when the slurry valve is in the open position so that this tighter fitting contains all the high internal line pressure thus providing a bi-directional flow and shut off. Going with the industrial specific scenario a wide-body slurry knife gate valve is an ideal choice for low as well as medium pressure heavy duty slurry applications.

A Slurry knife gate valve, whilst being designed for heavy-duty conditions, is equally ideal for usage in the high-pressure application requirements of the specific industrial sector like mining & mineral processing, power generation, waste water treatment etc.

Some of the Major Advantages are:

• Replacing of the sleeves is a lot easier.
• Has a bi-directional flow.
• The slurry knife-gate when open fully is usually withdrawn from the flow.
• No downstream leakage since there is a bubble tight shutoff.
• There is no clogging of the bonnet so as to impede the flow.
• Lower maintenance conditions.
• Very well suited either for wet or dry service or for both.
• Easier way of handling due to light weight design.

Conclusion:

Thanks to our wider experience in the designing and manufacturing of specialist slurry knife gate valves, we at V-tork are adept in designing to suit the specific application requirements.

Here at V-tork  leading knife gate valve manufacturers and knife gate valve suppliers in India, we have used our extensive experience in valve design and manufacturing for the industry specific application to offer a comprehensive range of slurry knife gate valves by offering an edge over other valve designs in the industry by using different materials for fabricating the valves as required by the customer.