Waterway 3.0 HP Executive Spa Pump Wet End [2 1 2" MBT X 2" MBT] [56 Frame] (310 1500) pentairpool A heater like this is A heater like this is useful because it provides dependable in line heat while matching systems that rely on this specific electronic heater format Gate valve with 1 1 2 inch buttress thread by 1 1 2 inch buttress thread connection A part like this is useful because it restores the complete wet side hydraulic assembly while preserving the larger frame size and mixed connection layout of the original pump accurate wet end matching is especially important to maintain fit and plumbing compatibility