661D.3700 Cat Pump 10 GPM, 3000 PSI 15PFR1 DSS R

CAT Pumps 661D.3700 15-Frame Plunger Pump

The CAT Pumps 661D.3700 is a highly specialized, industrial-duty triplex positive displacement reciprocating plunger pump engineered for extreme durability in corrosive fluid applications. Built on the rugged 15-frame crankcase, this specific model features a high-strength Duplex Stainless Steel (DSS) manifold and 316 Stainless Steel valve assemblies. Duplex stainless steel provides extraordinary resistance to corrosion, cracking, and pitting, making this pump the premier choice for handling harsh fluids in demanding applications such as saltwater reverse osmosis (SWRO), desalination, chemical processing, and wastewater reclamation.

Designed for continuous-duty operation, the 661D.3700 delivers a reliable 10 GPM at pressures up to 3000 PSI when operating at 1429 RPM. It features precision-polished solid ceramic plungers and specialized internal seals (indicated by the .3700 suffix) configured for demanding high-purity or harsh chemical environments. Its versatile solid shaft design allows for either a precise belt-driven setup or a direct-drive connection using a bell housing and flexible coupler, ensuring consistent flow and superior longevity in industrial water treatment systems.