Blackmer’s S Series Screw Pumps are self-priming double ended positive displacement pumps that are offered with or without external timing gears and bearings. Our twin and triple screw designs provide complete axial balancing of the rotating screws and with our timing technologies eliminate metal-to-metal contact within the pump. Blackmer’s carefully crafted screw technology rotates within a cylindrical cavity, transferring fluid and materials along the screw's spindle.
Twin Screw Pumps
S Series Twin Screw Pumps (WTG) are double-suction, self-priming twin screw pumps with external bearings and timing gear transmission. They are especially suitable for the delivery of fluids free of solid substances and/or with little abrasiveness.
S Series Twin Screw Pumps with non-timing (NTG) gear transmission feature a single-suction design. The axial pressure on the hydraulic components is compensated by a balance piston. Metal contact exists between the screw profiles and casing bore. The S Series (NTG) Twin Screw Pumps transfer lubricating fluids with higher viscosities, such as bitumen and residual oil, at medium or high temperatures.
Triple Screw Pumps
S Series Triple Screw Pumps are positive displacement rotatory pumps for handling clear, lubricating liquids without solid content in the most demanding applications. Providing smooth constant flow across a wide range of viscosities, temperatures and pressures, these extremely efficient pumps are reliable, compact, self-priming, low noise and environmentally friendly.