The Williams W Series Plunger Pumps feature a packed plunger design with a mechanical seal, capable of precise chemical injection in various process applications. Ideal for high-volume batch treatments and offshore uses, they deliver flow rates from 9 to 90 gph (34 to 336 lph) at pressures up to 3450 psi (238 bar). With a 100:1 turndown ratio and dual-acting pneumatic relay, these pumps are perfect for space-limited and power-restricted environments like FPSO vessels.