{"product_id":"superflo-vst-diffuser","title":"Pentair SuperFlo VST Diffuser, Pumps Manufactured After 6\/17\/19","description":"\u003cp\u003eThe Pentair 355949Z is the genuine diffuser for SuperFlo VST pumps manufactured after 6\/17\/19.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCheck the build date first\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePentair changed this part partway through the SuperFlo VST run. The listing covers pumps built after 6\/17\/19, and a pump made before that date takes a different diffuser. The build date is on the pump label, and it is worth confirming before you order rather than after the housing is open.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe diffuser is the shaped shroud that sits around the impeller. The impeller throws water outward, and the diffuser converts that motion into the pressure that pushes water through the filter and back to the pool. When it cracks or wears at the sealing face, water recirculates inside the pump instead of leaving it, and the symptom looks like weak flow with no obvious blockage.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitting\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe diffuser sits between the impeller and the seal plate, so replacing it means opening the pump. It is a sensible time to look over the other wear parts you can see while the housing is apart.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48634006372564,"sku":"PAC-101-0032","price":98.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.activepoolsupply.com\/products\/superflo-vst-diffuser","provider":"Active Pool Supply","version":"1.0","type":"link"}