Piston pump Willett™

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The Willett™ Pump is a vertical, single acting positive displacement ram pump, which is designed for long life, low maintenance and optimum energy efficiency. It is the most cost-effective solution available on the market to pump difficult and abrasive sludge and slurries. New and refurbished pumps are available to suit your requirements and budget with revised designs to meet the changing needs of today's market. It also comes with the total backing of a rapid response service from a highly-qualified team of engineers available around-the-clock. • Pump Body The pump body is a strong one-piece casting manufactured from close grained cast iron. It can also be made from cast stainless steel or coated internally with a suitable material, typically rubber, nylon or polyurethane. • Rams Pump rams are manufactured from ceramic, Alumina or from steel coated with a high temperature ceramic. These materials are resistant to abrasion and are hard wearing. The ram is sealed by low maintenance, auto-adjusting chevron seals. Other arrangements include traditional packed glands; high specification and flushed seals are also available. • Ball Valves Attached to the body casting are the suction and discharge non-return ball valves. They have generous clearances to allow the passage of rag and large solids. Biased flow in the valve chamber rotates the ball which ensures that the ball and seat wear evenly and helps to prevent blockage. Access into the ball valve is via an easily removable cover. • Variable Speed Control The standard Willett pump is designed to maintain full flow over a range of operating pressures. However the pump can be equipped for variable flow.