Hydraulic Hand Pump0 pages

Hydraulic Hand Pump The Gevalco "Hydraulic Hand Pump" utilizes the most current tech-nology to provide an efficient back-up System for opening and closing valves when power gas is not avail-able. The balanced piston design limintes the possibility of cavitation or creating a vacuum because the pressure on either side of the piston is always equal and both cavities are always full of oil. The high flow capacity provides easy and efficient manual opening and closing of even the largest valves. The Gevalco "Hydraulic Hand Pump" inctudes an "automatic reset" function on the open/close selectors to prevent inadvertent movement of the pump handle when power gas is re-introduced. This feature automati-cally resets the pump to the neutral position when gas pressure is detect-颕d. A pressure relief pushbutton is provided to retieve any internai pressure after pumping is complͨte. This allows the pump ram to be retracted into the pump, out of any hostile atmosphre. The Gevalco Advantage M Constructed of marine-grade, hard-anodized aluminum. with stainless steel pins, and bolts. ■ Available in 4 and 12 cubic inch/stroke displacement. ■ Protective rubber boots over exposed pushbuttons for atmospheric protection. . 1