{"product_id":"bioshield-union-assembly-for-models-522935-522937","title":"Pentair BioShield Union Assembly for Models 522935 to 522937","description":"\u003cp\u003eThe Pentair 523375 is the union assembly for the BioShield, listed for models 522935 through 522937. It is the genuine Pentair part, and it is the replacement for the earlier 523122.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat the union does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe union is the connection between the unit and the pipework. It is the joint you break loose whenever the unit has to come out for service, which means it gets handled far more than the rest of the plumbing and its sealing faces take the wear.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA union that still weeps or pulls air after it has been properly seated and retightened is done. Cranking harder on a tired union tends to crack the collar rather than seal it, so fitting a fresh assembly is the right call.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48634373603540,"sku":"PEN-523375","price":58.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_dd349a7c-d8ba-435c-8ff5-6ecd446ff23f.png?v=1788828704","url":"https:\/\/www.activepoolsupply.com\/products\/bioshield-union-assembly-for-models-522935-522937","provider":"Active Pool Supply","version":"1.0","type":"link"}