{"product_id":"stenner-pumps-mcdbinj-injection-duckbill-check-valve-with-1-4-inch-ferrule-for-45-85-100-170-series-adjustable-fixed-pumps-svp-bdf-series-pumps-1-4-inch-santoprene-5-pack","title":"Stenner Pumps MCDBINJ Injection Duckbill Check Valve with 1\/4\" Ferrule, 5 Pack","description":"\u003cp\u003eThe Stenner Pumps MCDBINJ is the injection duckbill check valve with a 1\/4 in. ferrule, molded in Santoprene and supplied five to a pack.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe duckbill sits at the injection point and opens only under pressure from the pump. Between strokes it closes, which is what stops treated water from pushing back up the feed line. When the duckbill hardens, splits or takes a set, that one way behavior is lost, and the pump stops delivering the dose it is set for even though it is still running.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCompatibility, as the source has it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe data carries two readings and both are worth checking against your pump. The full product name lists the 45, 85, 100 and 170 Series adjustable and fixed pumps together with the SVP and BDF Series, while the shorter title says Classic and Econ pumps. Confirm MCDBINJ against your own parts list rather than going by pump family alone.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy a five pack\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eStenner wet ends are modular, and the small elastomeric parts are the ones that wear. Buying the check valve in fives suits anyone servicing several feeders or rebuilding a pump on a set interval.\u003c\/p\u003e","brand":"Stenner","offers":[{"title":"Default Title","offer_id":48633767952596,"sku":"GHS-451-4037","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_6d9d2eb2-c31d-4dc6-8268-114e12308b39.jpg?v=1788814964","url":"https:\/\/www.activepoolsupply.com\/products\/stenner-pumps-mcdbinj-injection-duckbill-check-valve-with-1-4-inch-ferrule-for-45-85-100-170-series-adjustable-fixed-pumps-svp-bdf-series-pumps-1-4-inch-santoprene-5-pack","provider":"Active Pool Supply","version":"1.0","type":"link"}