Tech & Specs

Granco mounted pumps are ideal for bulk transfer of petroleum products and a variety of other liquids in a myriad of other industries.
All units are securely mounted on a heavy steel base and easily adapted to any type of power source. The performance is smooth and quiet with no vibration when properly installed. All of Granco’s pump models have a rugged, cartridge-type outboard bearing and they are designed with two ports. Four port pumps are available upon request. Compare small space requirements and the efficient operation of our mounted units and you will find that Granco is your best buy in pumping equipment. All systems are engineered with the proper size motor and gear reducer directly driving the pump. The gear reducers used have totally enclosed reduction gears running in a smoothly in an oil-tight gear housing. The size of the motor will depend on the flow required, viscosity, temperature of the liquid, diameter and length of the discharge pipe along with the total dynamic head. All Granco pumps are available with gear motor drive, variable speed drive, torque limited drive and gasoline engine drive. Pictured is a typical system drawing produced for each individual system manufactured by Granco.

Hydraulically driven multiple pump systems are available for plant operations requiring the bulk transfer of fluid from tanks to blending stations, trucks, and railcars. When your plant operation needs three or more pumps to move liquids from several sources to different destinations, a hydraulically driven pumping system design by Granco is you ideal choice. The GRANCO HYDRIVE SYSTEM is the ultimate, modern answer to give you control of the flow rate and direction of flow for maximum flexibility in transferring fluids around your operation. Granco can assist you in plant layout, size and selection of pumps for each location. We then select a hydraulic power pack and central control panel to drive and control all the Granco pumps in your system. Each transfer pump is independently driven by a hydraulic motor under the HY-DRIVE control giving each pump complete zero to maximum speed flexibility and complete reversibility. The HY-DRIVE system allows easy the simple adjustment of pump speed and therefore flow rate. High flow rates are available for quick unloading of bulk carriers. Medium flow rates are used for loading delivery trucks or large containers such as totes. For barrel or pail filling operations, the low flow rates are matched to handling speeds. Speeds can be adjusted to pump viscous products effectively and to handle liquids in cold weather.

The HY-DRIVE pumping system features full reversibility of all Granco transfer pumps in your plant operation. A manual control for each transfer pump allows flow in either direction through the pump. By opening and closing valves, or switching hose connections in your system, the operator can have total control over the destination of the fluids in each individual tank. Savings are in initial costs since pre-engineered components allows us to custom design your drive system without the huge initial design cost. You save on operating labor cost since the centralized control of the entire system saves manpower and time. One man control is usually recommended. You save on operating costs since this system allows one or two pumps operating at once and the system adjusts itself to the conditions using only the energy called for by the system demand. In multiple pump systems quality concerns are solved by avoiding cross contamination in the final product by dedicating one pump for each individual tank. With only one large electrical motor and starter for the hydraulic power pack, the cost and complexity of make the system explosion proof if needed is dramatically reduced. Expansion for future growth is no problem since more pumps can be added to the entire system at minimal cost.