Protek DP Series Diaphragm Hand Primers

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Protek DP Series Diaphragm Hand Primers

The hand diaphragm primer contains a rubber diaphragm working in an aluminum chamber. The diaphragm is actuated by a levered handle attached to it by a connecting rod. Air is drawn into the chamber through a suction valve on the upstroke and discharged through a discharge valve on the down-stroke.

Technical Specifications

  • Lightweight and durable solid-cast aluminum body.
  • Reinforced diaphragms are long-lasting.
  • Steel mounting bracket allows for easy and dependable installation.
  • Fulcrum bracket can be adjusted at various angles for your convenience.
  • DP5 Suction Pipe Size: 2 inch, 3 inch, 4 inch; DP7 Suction Pipe Size: 4 inch, 5 inch, 6 inch; DP9 Suction Pipe Size: 6 inch, 8 inch, or Larger

Additional Information

DP Series Diaphragm Hand Primers Installation and Operation Directions
1 Attach mounting bracket to centrifugal pump or skid
2 Connect primer suction inlet to priming port on the centrifugal pump with hose or flexible tubing. Be sure all connections are air tight.
3 Fulcrum bracket on the DP9 may be adjusted for ease of operation.
4 If primer is connected to pump discharge, a cutoff valve should be installed in the priming line. This valve should be closed immediately after priming to prevent the pump from discharging through the primer.
5 If primer is connected to pump suction, cut-off valve is not required.
6 A check valve must be used on the pump discharge to prevent air from being drawn into the pump from the discharge line while priming.
7 All primers are equipped with a drain cock installed in the suction chamber for draining excess water after each use. Drain cock must always be closed when primer is in use.

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