Pentair Housing – EQ Series | EQ Series Commercial Plastic Pump | 356755 C9419 locate the existing air relief

locate the existing air relief assembly on your filter and confirm the color matches Black (273550Z)

5 ppm before re-opening for swimmers

this part may not be correct for your installation

allowing you to dial in the correct sanitizer output for your pool or spa

Pentair Cristal-Flo II CRISTAL-FLO II Drain cap for Cristal-Flo II systems

Pentair Housing – EQ Series | EQ Series Commercial Plastic Pump | 356755 C9419 locate the existing air reliefThe Pentair Housing EQ Series (356755) is the OEM replacement pump housing for the EQ Series Commercial Plastic Pump line, sold individually. What It Does The pump housing forms the primary hydraulic chamber of the EQ Series pump, directing water flow through the impeller and maintaining the pressure envelope required for commercial circulation performance. A cracked or damaged housing compromises flow integrity and can lead to air entrainment,