Pentek Big Blue Filter Housing with Drain

Stock the Pentek Big Blue with Drain for installers who need a built-in drain valve alongside large-capacity filtration. This extra-large housing offers the same high-flow, heavy-sediment capacity as the standard Big Blue Heavy Duty line, reducing the number of vessels needed for demanding flow-rate applications, but adds a 3/8" ball-valve drain and drain plug for convenient sump draining during service or winterization. Available in 10" and 20" lengths, the High-Flow Polypropylene (HFPP) cap comes in 3/4", 1", or 1-1/2" NPT inlet/outlet configurations and includes a pressure relief/bleed button on the inlet side for safe cartridge changes. The single large ACME thread closure ensures quick opening and a positive seal. Accepts standard 4-1/2" diameter cartridges. A practical upgrade pick for dealers whose customers want easier maintenance and drain-down built into the housing itself. Key specs: Housing - Polypropylene | Cap - Polypropylene (HFPP) | O-Ring - Buna-N | Ball valve - PVC/Buna-N seals | Drain plug - High-density polypropylene | Port sizes - 3/4", 1", 1-1/2" NPT | Sump lengths - 10" and 20" | Cartridge compatibility - 4-1/2" diameter | Max pressure - 100 psi (10") / 90 psi (20") | Temperature rating - 40-100F | Includes 3/8" drain valve and pressure relief button