Enerpac Hydraulics [India] Pvt. Ltd. Offers Air Driven Torque Wrench Pumps, PTA-series. Enerpac Hydraulics [India] Pvt. Ltd. Produces high-force tools, equipment and accessories applicable in industrial markets. These are two stage pumps having automatic bypass for faster torque cycles. It incorporates customer adjustable pressure relief valve for setting hydraulic working pressures. The Air Driven Torque Wrench Pumps include transparent overlays in Ft.Lbs. And Nm included for all Enerpac torque wrenches that produce accurate torque settings and precise repeatability. These pumps also contain glycerine filled pressure gauge with scale readings in bar and psi.