Trident 101 series 316SS tube frame test unit, 8 litre 316SS tank w/ lid & sight level, fitted with SC Hydraulic air driven pump, D5000B070, and 0-10,000 psi pressure gauge. Pump Specifications; - 70:1 ratio, 7,000 psi MWP - 0.384 cu in displacement per stroke Test unit outlet connection 3/8 inch MP female.