Upgrade to Valve Seat Area of HDF2 Pump from Kelair Pumps Australia

Product News
Sales Engineer Myro Bratkovic (QLD)

Warren Rupp has recently announced the evolution of its Sandpiper 50mm heavy duty flap valve pump (commonly known as the HDF2) to Design Level 6.

The engineers at Warren Rupp have applied upgrades to the valve seat area of the HDF2 pump.

These changes include the introduction of a heavy duty flap valve seat in stainless steel now fitted with an integral "o-ring" type seal. This new configuration replaces a stamped flat stainless steel seat that required two separate gaskets on each seat. The pump suction and discharge elbows are now also fixed to the chambers by hex head screws, replacing stud bolts and nuts.

So what is the benefit to the user for these modifications to the HDF2 pump?

By changing to an engineered seat with integral oring fitted means that the pump can be overhauled without the need to break and replace gaskets. This evolution means that at each flap check valve on the pump, one item now replaces 3 separate components - one seat and two gaskets.

Replacing the studs and nuts with hex head screws means that the number of these hardware components has been halved.

The real benefit to the user is that the change to the new heavy duty flap valve will result in longer pump life and reduced operating cost due to there being fewer replacement parts, lower maintenance costs and reduced downtime.

What's more, any existing older model SA2 and HDF2 design level 5 pumps can be upgraded by simply installing the new design flap valve seat assembly.

The seats are available with o-ring materials in Buna-N, EPDM, Viton and Neoprene to handle many different applications and liquids.

For details and advice on these latest Sandpiper pump upgrades, contact Kelair.