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A failed or tripped shutoff switch will prevent the heater from firing or cause it to shut down unexpectedly
Replace the cap and gasket together (as this assembly provides) rather than reusing an old gasket with a new cap
Brand Equipment Line Model / Part Number Notes Pentair (formerly PacFab) D
Screw Length 1-1/4 in
flow adjusted for each install
Pentair Diffuser 0.75 HP | Dyna-Glas / Dyna-Max Series | C1-270PB C8413 A failed or tripped shutoffThe Pentair C1 270PB is the OEM replacement diffuser for the 3 4 HP Dyna Glas and Dyna Max Series pumps, including Dyna Pro and Dyna Pro E models. What It Does The diffuser channels water flow from the impeller into the pump volute, converting velocity into pressure. A cracked or worn diffuser reduces hydraulic efficiency and can cause loss of prime. Match the part number on your existing diffuser before ordering confirm your pump model is listed
