Liberty Pumps CSP-237 Complete 1/3 HP Crawl Space Pump Kit The Liberty CSP-237 is a complete commercial-grade sump pump system designed for durability and convenience. This package includes Liberty’s proven 237 automatic submersible pump, an 18" x 22" poly sump basin, a 2" discharge pipe assembly with pre-installed check valve, and a tight-fitting cover with 2" and 3" discharge openings. It’s fully pre-plumbed for quick installation and ideal for dewatering, graywater transfer, and light effluent removal. )) Key Features & Benefits Complete sump system with pump, basin, piping, and check valve. Includes Liberty 237 automatic pump — 1/3 HP, oil-filled, thermally protected motor. Durable polyethylene basin (18" diameter x 22" depth) resists corrosion and cracking. Non-clog vortex impeller handles solids up to 3/8". Applications Commercial or residential sump installations. Graywater and light effluent transfer. Basement or mechanical room water evacuation. Condensate and dewatering systems requiring dependable performance. Specifications Model CSP-237 Horsepower 1/3 HP Pump Type Automatic submersible (Liberty 237) Discharge 2? PVC with check valve Basin Size 18" x 22" polyethylene Solids Handling 3/8? maximum Maximum Flow ~37 GPM @ 5 ft head Shut-Off Head 21 ft Voltage / Phase 115 V, 1 Ph The Liberty CSP-237 offers a reliable, ready-to-install solution for managing unwanted water in basements, commercial spaces, and equipment rooms. Engineered for ease of use and long-term performance, this pre-plumbed sump system delivers Liberty’s signature reliability out of the box.