OTC Tools OTC 4009 Pump W/4 Way Valve. OTC Tools. Dual Master Pumps are our finest hand-operated power units. This fast-acting, two-stage pump not only handle high force, high pressure requirements up to 10000 PSI, but deliver extremely high volume at low pressure to quickly move the ram piston to and from the work. Pump has a built-in relief valve, pre-set at the factory for 10000 PSI. Maximum handle effort is 90 lbs. Hydraulic hand pump with No. 9500 3-position, 4-way control valve (for operating double-acting rams), and No. 4006 BL2 2-gallon reservoir with legs. Specifications: 2-Gallon reservoir with legs. 200 PSI maximum pressure at first stage. 10,000 PSI maximum pressure at second stage. 2-1/2 Inch piston diameter at first stage. 1/2 Inch piston diameter at second stage. 1-1/2 Inch piston stroke. 460 cu. in. usable reservoir capacity. 3/8 Inch NPTF oil port. Email for product availability.