{"product_id":"groco-4-5-gal-pressure-tank-pst-4","title":"Groco Pressure Tanks - 4.5 GAL Pressure Tank | PST-4","description":"\u003ch3\u003ePressure Tanks\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eGROCO PST-4 Pressure Storage Tank\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA pneumatic pressure charge, matched to the pump cut on pressure prevents water logging by separating the air charge from system water pressure with a rubber bladder. The result is smooth pressure delivery, even temperature mix in showers, and reduced pump cycling. Tanks may be mounted in any position, and anywhere in the cold water plumbing after the pump. PST tanks may be used for fresh or salt water. Mount hardware is included. PST-6 has a pump stand for mounting PJR, WSC-60 or WSC-80 pump. Maximum rated PSI is 100.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Groco\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part #:\u003c\/strong\u003e PST-4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold as:\u003c\/strong\u003e EA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eModel Details\u003c\/h3\u003e\u003cp\u003ePST-4 is a stand-mounted pressure storage tank with 14-gallon nominal tank volume and a 3\/4-inch NPT plumbing connection. GROCO lists 4.3 gallons of drawdown for a 30\/50 PSI operating cycle. Drawdown is the usable water delivered between pump cycles, not the total tank volume.\u003c\/p\u003e\u003ch3\u003eParts Desk Insight\u003c\/h3\u003e\u003cp\u003eSet the air precharge to match the pump cut-on pressure, checking it with no water pressure in the tank. Size the tank by the pump operating pressures and required drawdown rather than the gallon figure alone. Leave access to the air valve for the manufacturer-recommended monthly pressure check.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.groco.net\/media\/file\/file\/p\/s\/pst_info.pdf\"\u003eGROCO PST installation guidance\u003c\/a\u003e | \u003ca href=\"https:\/\/www.groco.net\/products\/water-pressure\/pressure-storage-tank\"\u003eCurrent model and drawdown table\u003c\/a\u003e\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":68060749594660,"sku":"GRO-PST-4","price":3681.45,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/GROPST_9cd80c76-a9e3-4c3c-b668-5c9a26e2a12b.jpg?v=1794170740","url":"https:\/\/marisolmarine.com\/products\/groco-4-5-gal-pressure-tank-pst-4","provider":"Marisol Marine Company","version":"1.0","type":"link"}