{"product_id":"stenner-pumps-qp500-1-quickpror-roller-assembly-for-classic-svp-m128-series-pumps","title":"Stenner Pumps QuickPro Roller Assembly for Classic, SVP and M128 Series Pumps, QP500-1","description":"\u003cp\u003eThe Stenner QP500-1 is the QuickPro roller assembly for Classic, SVP and M128 series peristaltic chemical feed pumps.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA peristaltic pump has no impeller and no seals in the chemical path. A rotor carries rollers that squeeze a flexible tube against the pump housing, and that travelling pinch is what pushes chemical through. Everything the pump delivers depends on those rollers closing the tube completely.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to change it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eRollers are a wear part. As they age they stop compressing the tube fully and part of every rotation leaks back past the pinch, so the pump keeps turning while the feed rate quietly falls. If the tube is intact and the suction line is clear but output is down, the rollers are the place to look. They are commonly replaced alongside the pump tube, since both wear on a similar schedule.\u003c\/p\u003e","brand":"Stenner","offers":[{"title":"Default Title","offer_id":48633709592788,"sku":"GHS-451-4107","price":47.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/GHS-451-4107-_1a.png?v=1788812268","url":"https:\/\/www.activepoolsupply.com\/products\/stenner-pumps-qp500-1-quickpror-roller-assembly-for-classic-svp-m128-series-pumps","provider":"Active Pool Supply","version":"1.0","type":"link"}