{"product_id":"tigerflow-tigercub-diaphragm-expansion-tank","title":"TIGERFLOW Tigercub and Ocelot Diaphragm Expansion Tank - 150 PSI","description":"\u003c!-- TABS --\u003e\n\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cdiv class=\"gs\"\u003e\n\u003cdiv class=\"gs-head\"\u003e\n\u003cdiv class=\"gs-eyebrow\"\u003eTIGERFLOW · Booster Accessory\u003c\/div\u003e\n\u003cdiv class=\"gs-title\"\u003eDiaphragm Expansion Tanks\u003c\/div\u003e\n\u003cdiv class=\"gs-sub\"\u003eDiaphragm expansion tanks offered with TIGERFLOW Tigercub and Ocelot boosters, 2 to 44 gallons, 150 PSI.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gs-sec\"\u003e\n\u003cdiv class=\"gs-h\"\u003eOverview\u003c\/div\u003e\n\u003cdiv class=\"gs-lead\"\u003e\n\u003cp\u003eA small expansion tank on a booster carries the leak load, so the pump does not cycle every time a fixture drips. TIGERFLOW offers Amtrol ST series tanks from 2 to 44 gallons for the Tigercub (non-ASME, plus a 34-gallon ASME model) and a 4.4-gallon FDA rated diaphragm tank for the Ocelot Duplex. The 2-gallon ST-5 is rated 150 PSI and 200°F, ships with a 38 PSI precharge and has an NSF-61 certified antimicrobial liner.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF;border:1px solid #C7CBD1;border-top:3px solid #B3122A;padding:12px 16px 12px;margin:16px 0 4px;font-size:13.5px;line-height:1.55;color:#4A4A4F\"\u003e\n\u003cdiv style=\"font-family:Arial Black,Arial,sans-serif;font-size:11px;letter-spacing:1.2px;text-transform:uppercase;color:#B3122A;margin-bottom:8px\"\u003eWhat Ships and What It Needs to Run\u003c\/div\u003e\n\u003cp style=\"margin:0\"\u003e\u003cstrong style=\"color:#B3122A\"\u003eIncluded:\u003c\/strong\u003e one diaphragm expansion tank of the size selected.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E1E3E6;border-left:3px solid #B8BDC4;padding:8px 14px;font-size:11.5px;color:#4A4A4F;margin-top:14px;line-height:1.5\"\u003eGenuine TIGERFLOW equipment, factory-new in original packaging — sold and supported by Watermain Supply, an independent industrial supplier.\u003c\/div\u003e\n\u003cdiv style=\"background:#fff;border-left:5px solid #B3122A;padding:15px 18px;margin-top:12px\"\u003e\n\u003cdiv style=\"font-family:Arial Black,Arial,sans-serif;font-size:15px;color:#B3122A;text-transform:uppercase;letter-spacing:1px;margin-bottom:6px\"\u003e12-Month TIGERFLOW Warranty\u003c\/div\u003e\n\u003cp style=\"margin:0;font-size:13.5px;color:#4A4A4F;line-height:1.55\"\u003eCovered for \u003cstrong\u003e12 months from the date of purchase\u003c\/strong\u003e under TIGERFLOW’s published warranty terms.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gs-sec\"\u003e\n\u003cdiv class=\"gs-h\"\u003eSpecifications\u003c\/div\u003e\n\u003cdiv class=\"gs-lead\"\u003e\n\u003cdiv class=\"table-wrapper\"\u003e\u003ctable class=\"gs-tbl\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2-gallon ST-5\u003c\/td\u003e\n\u003ctd\u003e150 PSI maximum working pressure; 200°F maximum temperature; 38 PSIG (2.6 bar) factory precharge; NSF-61 certified antimicrobial liner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmtrol ST series\u003c\/td\u003e\n\u003ctd\u003e2.0, 10.3, 14, 20, 34 and 44 gallon, 150 PSI; ST-70VC 34 gallon ASME\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOcelot tank\u003c\/td\u003e\n\u003ctd\u003e4.4 gallon, 150 PSI, FDA rated diaphragm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gs-sec\"\u003e\n\u003cdiv class=\"gs-h\"\u003ePart Numbers\u003c\/div\u003e\n\u003cdiv class=\"gs-lead\"\u003e\n\u003cdiv class=\"table-wrapper\"\u003e\u003ctable class=\"gs-tbl\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart No.\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e3200013721\u003c\/td\u003e\n\u003ctd\u003eAmtrol ST-5 2.0GAL 150PSI\u003c\/td\u003e\n\u003ctd\u003e2.0 Gal - Non-ASME\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3200013723\u003c\/td\u003e\n\u003ctd\u003eTank  4.4 Gal\u003c\/td\u003e\n\u003ctd\u003e4.4 Gal - FDA Diaphragm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3200013725\u003c\/td\u003e\n\u003ctd\u003eAmtrol ST-25V 10.3GAL 150PSI\u003c\/td\u003e\n\u003ctd\u003e10.3 Gal - Non-ASME\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3200013727\u003c\/td\u003e\n\u003ctd\u003eAmtrol ST-30V 14GAL 150PSI\u003c\/td\u003e\n\u003ctd\u003e14 Gal - Non-ASME\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3200013771\u003c\/td\u003e\n\u003ctd\u003eAmtrol ST-42V 20GAL 150PSI\u003c\/td\u003e\n\u003ctd\u003e20 Gal - Non-ASME\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3200013729\u003c\/td\u003e\n\u003ctd\u003eAmtrol ST-60V 34GAL 150PSI\u003c\/td\u003e\n\u003ctd\u003e34 Gal - Non-ASME\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3200013773\u003c\/td\u003e\n\u003ctd\u003eAmtrol ST-70VC 34GAL 150PSI\u003c\/td\u003e\n\u003ctd\u003e34 Gal - ASME\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3200013731\u003c\/td\u003e\n\u003ctd\u003eAmtrol ST-80V 44GAL 150PSI\u003c\/td\u003e\n\u003ctd\u003e44 Gal - Non-ASME\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gs-sec\"\u003e\n\u003cdiv class=\"gs-h\"\u003eBefore You Order\u003c\/div\u003e\n\u003cdiv class=\"gs-lead\"\u003e\n\u003cdiv class=\"gs-note\"\u003eSet the tank precharge below the booster’s cut-in or set point as the tank maker directs. Ratings other than the 2-gallon tank’s are from the price-list descriptions (150 PSI).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gs-contact\"\u003eFor engineering-led sizing and selection support or a factory submittal, email \u003ca href=\"mailto:sales@watermainsupply.com\"\u003esales@watermainsupply.com\u003c\/a\u003e or call \u003ca href=\"tel:18885104036\"\u003e1-888.510.4036\u003c\/a\u003e.\u003cbr\u003e© Watermain Supply — A division of E4 Industrial LLC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch5\u003eData Sheet\u003c\/h5\u003e\n\u003cdiv class=\"gs\"\u003e\n\u003cdiv class=\"gs-dl\"\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0264\/1913\/4527\/files\/2022-TIGERCUB-CD-CATALOG.pdf?v=1792271197\" target=\"_blank\" rel=\"noopener\"\u003eTigercub CD Catalog: Dimensions, Options and Curves\u003c\/a\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0264\/1913\/4527\/files\/Ocelot-Simplex-Duplex-Brochure-2025.04.pdf?v=1792271197\" target=\"_blank\" rel=\"noopener\"\u003eOcelot Simplex and Duplex Booster Brochure (April 2025)\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch5\u003eVideos\u003c\/h5\u003e\n\u003cdiv class=\"gs\"\u003e\u003cdiv class=\"gs-sec\" style=\"margin-top:6px\"\u003e\n\u003cp style=\"font-size:13px;color:#9B9EA3\"\u003eProduct videos are being added to this listing. For a walkthrough in the meantime, email sales@watermainsupply.com.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c!-- \/TABS --\u003e","brand":"TIGERFLOW","offers":[{"title":"2.0 Gal - Non-ASME \/ Amtrol ST-5 - 3200013721","offer_id":50690247393455,"sku":"3200013721","price":288.26,"currency_code":"USD","in_stock":true},{"title":"4.4 Gal - FDA Diaphragm \/ Tank - 3200013723","offer_id":50690247426223,"sku":"3200013723","price":167.32,"currency_code":"USD","in_stock":true},{"title":"10.3 Gal - Non-ASME \/ Amtrol ST-25V - 3200013725","offer_id":50690247458991,"sku":"3200013725","price":852.23,"currency_code":"USD","in_stock":true},{"title":"14 Gal - Non-ASME \/ Amtrol ST-30V - 3200013727","offer_id":50690247491759,"sku":"3200013727","price":1034.41,"currency_code":"USD","in_stock":true},{"title":"20 Gal - Non-ASME \/ Amtrol ST-42V - 3200013771","offer_id":50690247524527,"sku":"3200013771","price":1295.47,"currency_code":"USD","in_stock":true},{"title":"34 Gal - Non-ASME \/ Amtrol ST-60V - 3200013729","offer_id":50690247557295,"sku":"3200013729","price":1676.36,"currency_code":"USD","in_stock":true},{"title":"34 Gal - ASME \/ Amtrol ST-70VC - 3200013773","offer_id":50690247590063,"sku":"3200013773","price":8678.06,"currency_code":"USD","in_stock":true},{"title":"44 Gal - Non-ASME \/ Amtrol ST-80V - 3200013731","offer_id":50690247622831,"sku":"3200013731","price":2121.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0264\/1913\/4527\/files\/tigerflow-expansion-tank-2gal_90fca8a2-feb2-4f1f-be27-3f46eedf6c80.jpg?v=1792271481","url":"https:\/\/watermainsupply.com\/products\/tigerflow-tigercub-diaphragm-expansion-tank","provider":"Watermainsupply","version":"1.0","type":"link"}