sludge transfer pump

Jabsco # 836-0008-P Natural Rubber impeller

Product Information :

The Jabsco impeller # 836-0008-P is a flexible rubber impeller, made of Natural Rubber, with 9 blades/fins, and is 3-3/4 inches wide (95mm) by 2-1/2 inches thick (63.5mm), and has a 1 inch (25mm) Brass Spline Drive shaft hub. This impeller is made from Natural Rubber material, which is used in cold water applications. The temperature range of Natural Rubber impellers is 22 degrees F (-5.5 degrees C) to 120 degrees F (48 degrees C). This impeller is suitable for cold water, glycol, engine cooling, beer, wine, whiskey, cider. It is NOT suitable for any oily liquids and diesel. Do NOT use with oily liquids and diesel. Jabsco flexible impellers are subjected to rigorous quality processes to ensure reliable, efficient and long lasting performance.

NUMBER of BLADES : 9.

SHAFT HUB TYPE : Spline Drive.

DIMENSIONS : 3-3/4 inches wide (95mm wide), 2-1/2 inches thick/deep (63.5mm), with 1 inch (25mm) Spline Drive shaft hub.

Applications:

The Jabsco 836-0008-P is a replacement impeller used in Industrial processing applications. After replacing and installing the new impeller, the pump will need up to 30 seconds to prime - DO NOT run dry any longer than 30 seconds as the lack of liquid will damage the impeller. Ensure suction pipework is airtight or the pump will not self-prime.

Impeller Replacement:

Replacing impellers is easy. By removing the end cover screws, it is possible to remove the impeller by using either a Jabsco Impeller Removal Tool, or channel lock pliers, to grip the hub of the impeller. Don't use screwdrivers as they may damage the face of the pump body, causing leaks, and they can be dangerous in confined spaces.

Always grease new impellers. Firstly, it makes it easier to install the impeller into the pump bore, and secondly it gives added protection to the impeller during initial prime. After replacing the gasket and end cover the pump is ready to use.

Troubleshooting:

This is a replacement impeller.

Depending on how often you use the pump and how hard you are on the impeller you may need to replace this once every few years, or a few times per year.

The normal end of the flexible impeller is when there are some pieces of a blade or blades missing, and/ or some of the impeller blades are permanently and excessively curved. The blades might also be cracked about half way up their height. Sometimes the impellers can wear out because of system issues like cavitation or air being sucked into the system, and you might see pieces missing from blades tips especially in center of impeller.

Note that Flexible Impeller pumps need up to 30 seconds to prime - but do not run dry any longer as lack of liquid will damage the impeller.

If the system does not have liquid in it while the impeller is running for even a minute the impeller can burn out. If this is the case you will see that the impeller end faces are hard, polished, and cracked, like carbon. You may be missing some or all of the blades completely in severe cases. Do not run your impellers dry / without liquid.