FLUID POWER: Clippard Instrument Lab. Inc., introduces a new line of manually-operated Push/Pull Valves. These new spool valves are available in both three- and four- way configurations. Available in detent or momentary versions, these new valves provide the flexibility for unlimited applications. And, with an operating temperature of 32 to 140F and an operating pressure of 0 to 115 psig, these new valves offer top notch performance where maximum performance and maximum value are demanded.