Graco Metallic Double Diaphragm Pumps

Sizes and pump construction

3/4" Aluminium or Stainless Steel
1" Aluminium or Stainless Steel
1-1/2" Aluminium or Stainless Steel
2" Aluminium or Stainless Steel
3" Aluminium

There is a wide range of optional construction materials for internal Seats, Balls and Diaphragms to suit your applications.

Flow rates

Maximum flow rates vary from 61 litres per minute for the 3/4" pump to 1.041 litres per minute for the 3" pump.

Effects of viscosity and suction lifts on flow rates

This is a very important factor when considering the use of a Double Diaphragm pump. Please see Al overleaf.

When to use Double Diaphragm pumps

Double Diaphragm pumps are designed for volume transfer applications and are usually unsuitable for very viscous products or where there are long pipe runs and high discharge heads to overcome.

FES can supply special pumps for working under these more difficult conditions. If you are unsure which is the best pump for your application, call the experts at FES.

Air valves

Graco have developed very reliable air valves with the number of working parts reduced to a minimum.

Spares

Spares for wetted parts are available in a variety of kits for convenience when replacing wearing parts in pumps.

FES - Air-operated pumping specialists FES was founded in 1985, supplying an
extensive choice of high quality double diaphragm pumps for a huge variety of fluids.
At FES, we have always believed in customer service and our flexible approach to solving
problems means we will always do our best to provide a solution to the
most difficult pumping applications. FES is a Graco Gold Distributor: Graco is one
of the most respected manufacturers of pumping equipment in the world.