Flexible impeller pumps provide an efficient solution to most marine pumping needs. The primary advantage of a flexible impeller pump is its self-priming capability. As the blades of the impeller are depressed and rebound, they create their own vacuum drawing fluid into the pumps (see operating principle)

Pumps instantly with dry suction lifts up to 3 meters, up to 9.5 meters when wetted. Thus a flexible impeller pump being used in bilge, deck wash, or engine cooling need not be located below the water line or manually primed. An added feature of flexible impeller pumps is that they can pass fairly large particles without clogging or damaging the pump. This reduces the need for filtering the incoming fluid.

A common feature of all flexible impeller pumps is that they cannot be permitted to run dry for more than 30 seconds. Both the impeller and the seals depend upon the water for lubrication and will soon burn out if run dry. Wearing parts are easily replaceable, and service kits are available for all models.

In pumps manufactured by JMP, Rotating Direction is counterclockwise, right picture, the point of view with endcover (impeller cover)

Pipe runs should always be kept as short and straight as possible, avoiding rising and over obstructions, as this can create air-locks. Plumbing should be reinforced, non-collapsible hose of the recoomended size.

Flexible impeller pumps must not be run dry (more than 30 seconds). Blige pumps and water pumps in particular should always be fastened to the boat structure to ensure their permanent location. Mount Flexible impeller pumps so that some water is left in the pumpbody when the pump is off. This will prolong impeller life and speed priming. Pumps must be installed with the overboard discharge well above the waterline to avoid water syphoning back into the vessel

JMP's unquie screws to remove easily with Spanners or Screwdrivers JMP Cam provide more efficenct and accrurate operation by using forging and precise machining process
O-rings provide better cover sealing and last long life. JMP Covers provide Economic solution, you can use them twice.
JMP always use Mechanical Seals for all JMP pumps. . Good quality materials and precise dimension to improve operation performance
"Sepcial Coat, Very clean surface, Very Pricise Dimension, Special Bonding and Good Price, You can Count on JMP" Well machined stainless stell shaft with pricise dimension.
Fiber gaskets for cam screw sealing    


Copyright 2005-2006 © TriStar Industries. All rights reserved.