2SFQ42SEEL Cat Pump 4.2 GPM / 15.9 LPM 1200 PSI 316 Stainless Steel 1725 RPM Direct Drive 3/8" NPT(F) Inlet & Discharge Port Size

Cat Pumps 2SFQ42SEEL Stainless Steel Direct-Drive Plunger Pump (4.2 GPM, 1200 PSI)

Engineered for demanding continuous-duty applications such as reverse osmosis, desalination, and highly corrosive fluid transfer, the Cat Pumps 2SFQ42SEEL is a commercial-grade, direct-drive triplex plunger pump. To ensure maximum chemical and corrosion resistance, this pump features a specialized "wet end" constructed entirely of 316 stainless steel, encompassing both the manifold and valve assemblies. Unlike standard forged brass pumps, this high-grade stainless steel construction provides the essential structural integrity and longevity required when pumping harsh seawater or aggressive industrial chemicals.

While the fluid-contact components are precision-machined from 316 stainless steel, the pump integrates a variety of specialized materials to maximize overall performance, durability, and cost-efficiency. It utilizes a lightweight aluminum crankcase to effectively dissipate heat, along with solid ceramic plungers that provide a true, low-friction wear surface to significantly extend the lifespan of the standard NBR (Buna-N) seals and O-rings. Furthermore, the "Q" in the model number designates a specialized internal design that reduces operating sound levels by up to 6 decibels, making it ideal for indoor or noise-sensitive installations. Operating at 1725 RPM, this compact positive displacement pump mounts seamlessly to a standard NEMA 56C face electric motor via a 5/8-inch hollow shaft, delivering a highly consistent flow rate of 4.2 gallons per minute (GPM) at a robust test pressure of 1200 PSI.