Industrial 1F35 Positive Displacement Gear Pump

Roper 1F35 (F35) Positive Displacement Gear Pump is a compact, industrial rotary gear pump from the F-Series designed for reliable fixed-volume liquid transfer. In listings it is identified as Figure 1F35 Type 27, reinforcing its place in the F-Series lineup. The pump delivers a theoretical displacement of 0.034 GPR (128.7 cc per revolution) and is rated for a maximum speed of 1,800 RPM, enabling a maximum flow at full speed of 61.2 GPM (13.9 m3/hr). It features a 1-1/4" NPT port connection for both inlet and outlet, aligning with common industrial piping standards. The unit is designed to handle pressures up to 300 psi (20 bar), making it suitable for mid‑range transfer and circulation tasks. Sealing options typically include a mechanical seal or a packed box, chosen based on the fluid and service conditions. As a positive-displacement gear pump, its output closely follows rpm, providing predictable flow with relatively simple control in applications requiring steady transfer of lubricants, light viscous fluids, or similar industrial liquids. Manufactured by Roper Pump Company, this model represents the durable, high‑volume capability characteristic of the F35 family, offering a proven solution for demanding transfer and circulation duties in modern process environments.