Gravi-Chek, the Motorless Water Pump, is the latest technology available in the ram pump industry. This pump is designed to pump water effectively uphill without a motor. The water itself, entering the pump at a ten percent grade provides the power and perpetual motion to activate this pump.
Carlson and Beauloye, in business since 1924, have crafted this Motorless Water Pump with durable new materials. The results are a powerful light weight aqua-dynamically designed pump that has revolutionized its industry.
HOW IT WORKS Water flows through the drive pipe into the pump and out through the waste gate. The buoyant ball will be pulled down by the flow of water and block the waste gate.?The incoming water forces the spring-loaded check valve open, allowing water to fill the surge tank, compressing the air in the tank. When the pressure in the surge tank equals the pressure in the drive pipe, the water from the drive pipe can lo longer flow into the pump and a bounce-back effect happens. The check valve shuts and the compressed air in the surge tank forces water in the tank up to where it is needed. The bounce-back causes the water to briefly flow back up the drive pipe, unseating the ball valve and letting the cycle begin again.
Water must be clean or a filter or sedimentation tank at the connection is required. The fall to drive pipe relationship is 1-5 and can go up to 10' of fall/50' of drive pipe.
The shipping weight of the largest Gravi-Chek pump is less than fifty pounds, and can be shipped cost-effectively anywhere in the world by air freight.
Model 1: 20-40 gallons per day flow range; 349.8' max lift. Model 2: 100-4,000 gallons per day flow range; 353.47' max lift. Model 4: 400-16,000 gallons per day flow range; 353.47' max lift.
Gravi Chek Water Pumps 