{"product_id":"120-gallon-double-wall-containment-tank-36-dia-x-51h-16-vented-manway","title":"120 Gallon Double Wall Containment Tank, 36\" Dia x 51\"H, 16\" Vented Manway","description":"\u003cp data-path-to-node=\"0\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cb data-path-to-node=\"0\" data-index-in-node=\"4\"\u003e120 Gallon Double Wall Containment Tank (36\" Dia × 51\" H with 16\" Vented Manway)\u003c\/b\u003e\u003cspan\u003e is a heavy-duty,\u003c\/span\u003e\u003cspan\u003e point-of-use secondary containment chemical storage vessel engineered for large commercial aquatic facilities,\u003c\/span\u003e\u003cspan\u003e waterparks,\u003c\/span\u003e\u003cspan\u003e high-volume natatoriums,\u003c\/span\u003e\u003cspan\u003e and municipal chemical feed installations.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"1\"\u003e\u003cspan\u003eFeaturing a broader 36-inch diameter profile and an expanded 16-inch access manway,\u003c\/span\u003e\u003cspan\u003e this model offers a wider base of support and increased access clearance compared to narrower variants.\u003c\/span\u003e\u003cspan\u003e It satisfies EPA 40 CFR 264.\u003c\/span\u003e\u003cspan\u003e175 and OSHA secondary containment standards without requiring floor berms,\u003c\/span\u003e\u003cspan\u003e containment basins,\u003c\/span\u003e\u003cspan\u003e or separate catch pans,\u003c\/span\u003e\u003cspan\u003e providing dedicated storage for high-demand chemicals such as 12.\u003c\/span\u003e\u003cspan\u003e5% to 15% liquid sodium hypochlorite,\u003c\/span\u003e\u003cspan\u003e 31.\u003c\/span\u003e\u003cspan\u003e45% muriatic acid,\u003c\/span\u003e\u003cspan\u003e sulfuric acid,\u003c\/span\u003e\u003cspan\u003e and high-volume coagulant solutions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"attachment-container search-images md-has-block-component\"\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/div\u003e\n\u003ch3 data-path-to-node=\"4\"\u003eMechanical \u0026amp; Structural Architecture\u003c\/h3\u003e\n\u003cul data-path-to-node=\"5\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,0,0\"\u003e\u003cb data-path-to-node=\"5,0,0\" data-index-in-node=\"0\"\u003eIntegrated Secondary Containment (115% to 125% Buffer):\u003c\/b\u003e\u003cspan\u003e The outer containment envelope provides 115% to 125% capacity relative to the primary inner vessel.\u003c\/span\u003e\u003cspan\u003e In the event of primary vessel mechanical rupture,\u003c\/span\u003e\u003cspan\u003e stress cracking,\u003c\/span\u003e\u003cspan\u003e or thermal fatigue,\u003c\/span\u003e\u003cspan\u003e the full liquid volume is safely retained within the interstitial space,\u003c\/span\u003e\u003cspan\u003e preventing chemical release onto equipment room pads.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,1,0\"\u003e\u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"0\"\u003eRotomolded Monolithic Construction:\u003c\/b\u003e\u003cspan\u003e Seamlessly molded as a single,\u003c\/span\u003e\u003cspan\u003e monolithic unit using virgin High-Density Linear Polyethylene (HDLPE) or High-Density Cross-Linked Polyethylene (XLPE).\u003c\/span\u003e\u003cspan\u003e Monolithic molding eliminates welded seams,\u003c\/span\u003e\u003cspan\u003e joints,\u003c\/span\u003e\u003cspan\u003e and stress risers vulnerable to chemical attack and cyclic hydraulic loading.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,2,0\"\u003e\u003cb data-path-to-node=\"5,2,0\" data-index-in-node=\"0\"\u003eHigh Specific Gravity Rating (1.5 to 1.9 SG):\u003c\/b\u003e\u003cspan\u003e Formulated with heavy-wall construction rated to handle high-density fluids up to \u003c\/span\u003e\u003cb data-path-to-node=\"5,2,0\" data-index-in-node=\"128\"\u003e1.9 Specific Gravity\u003c\/b\u003e\u003cspan\u003e,\u003c\/span\u003e\u003cspan\u003e safely holding dense 12.\u003c\/span\u003e\u003cspan\u003e5%–15% sodium hypochlorite (~1.\u003c\/span\u003e\u003cspan\u003e20–1.\u003c\/span\u003e\u003cspan\u003e22 SG) and 31.\u003c\/span\u003e\u003cspan\u003e45% muriatic acid (~1.\u003c\/span\u003e\u003cspan\u003e16 SG) without sidewall bulging.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,3,0\"\u003e\u003cb data-path-to-node=\"5,3,0\" data-index-in-node=\"0\"\u003e16\" Oversized Vented Access Manway:\u003c\/b\u003e\u003cspan\u003e Features an expanded 16-inch threaded or quarter-turn polypropylene access lid with an integrated pressure-relief vent.\u003c\/span\u003e\u003cspan\u003e The wide diameter enables easy internal visual inspection,\u003c\/span\u003e\u003cspan\u003e drop-tube installation,\u003c\/span\u003e\u003cspan\u003e and manual hose filling,\u003c\/span\u003e\u003cspan class=\"\"\u003e while the breathable labyrinth\/membrane vent relieves oxygen gas released from decomposing sodium hypochlorite and prevents vacuum collapse during high-rate dosing.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,4,0\"\u003e\u003cb data-path-to-node=\"5,4,0\" data-index-in-node=\"0\" class=\"\"\u003eWider Top-Mount Equipment Surface:\u003c\/b\u003e\u003cspan class=\"\"\u003e The 36-inch diameter top dome provides a larger,\u003c\/span\u003e\u003cspan\u003e rigid footprint with molded flat landings to anchor commercial electronic diaphragm metering pumps,\u003c\/span\u003e\u003cspan\u003e peristaltic feeders,\u003c\/span\u003e\u003cspan\u003e level-sensor transmitters,\u003c\/span\u003e\u003cspan\u003e and rigid top-draw suction lances.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,5,0\"\u003e\u003cb data-path-to-node=\"5,5,0\" data-index-in-node=\"0\"\u003eVisual Fluid Inventory Tracking:\u003c\/b\u003e\u003cspan\u003e Molded in natural translucent polymer with raised gallon and liter graduation marks down the exterior sidewall,\u003c\/span\u003e\u003cspan\u003e allowing operators to visually check chemical inventory levels without unthreading the access lid.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"7\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul data-path-to-node=\"8\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,0,0\"\u003e\u003cb data-path-to-node=\"8,0,0\" data-index-in-node=\"0\"\u003eNominal Primary Volume:\u003c\/b\u003e\u003cspan\u003e 120 US Gallons (approx.\u003c\/span\u003e\u003cspan\u003e 454 Liters).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,1,0\"\u003e\u003cb data-path-to-node=\"8,1,0\" data-index-in-node=\"0\"\u003eSecondary Outer Volume:\u003c\/b\u003e\u003cspan\u003e Approx.\u003c\/span\u003e\u003cspan\u003e 140 to 150 US Gallons (\u003c\/span\u003e\u003cspan class=\"math-inline\" data-math=\"\u0026gt;115\\%\" data-index-in-node=\"55\"\u003e$\u0026gt;115\\%$\u003c\/span\u003e\u003cspan\u003e containment capacity).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,2,0\"\u003e\u003cb data-path-to-node=\"8,2,0\" data-index-in-node=\"0\"\u003eOverall Exterior Dimensions:\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003e\u003cb data-path-to-node=\"8,2,0\" data-index-in-node=\"29\"\u003e36\" Outer Diameter × 51\" Overall Height\u003c\/b\u003e\u003cspan\u003e (approx.\u003c\/span\u003e\u003cspan\u003e 91.\u003c\/span\u003e\u003cspan\u003e4 cm Dia.\u003c\/span\u003e\u003cspan\u003e × 129.\u003c\/span\u003e\u003cspan\u003e5 cm H).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,3,0\"\u003e\u003cb data-path-to-node=\"8,3,0\" data-index-in-node=\"0\"\u003eAccess Manway:\u003c\/b\u003e\u003cspan\u003e 16\" polypropylene vented fill\/access lid with breathable labyrinth\/membrane vent.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,4,0\"\u003e\u003cb data-path-to-node=\"8,4,0\" data-index-in-node=\"0\"\u003eSpecific Gravity Rating:\u003c\/b\u003e\u003cspan\u003e Standard 1.\u003c\/span\u003e\u003cspan\u003e5 SG (dilute acids\/water) or Heavy-Duty 1.\u003c\/span\u003e\u003cspan\u003e9 SG (concentrated bleach\/acids).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,5,0\"\u003e\u003cb data-path-to-node=\"8,5,0\" data-index-in-node=\"0\"\u003eOperating Temperature Limits:\u003c\/b\u003e\u003cspan\u003e -20°F to 120°F (-29°C to 49°C) continuous service.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,6,0\"\u003e\u003cb data-path-to-node=\"8,6,0\" data-index-in-node=\"0\"\u003eFittings \u0026amp; Port Landings:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"8,6,1\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,6,1,0,0\"\u003e\u003cspan\u003eTop-dome flats accommodate up to three 2\" NPT female bulkhead adapters (for top-draw suction lances,\u003c\/span\u003e\u003cspan\u003e chemical fill lines,\u003c\/span\u003e\u003cspan\u003e and interstitial leak detection float switches).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,6,1,1,0\"\u003e\u003cspan\u003eTop-draw plumbing architecture standard to prevent gravity drainage or siphon leaks.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"10\"\u003eChemical Compatibility Reference\u003c\/h3\u003e\n\u003cul data-path-to-node=\"11\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,0,0\"\u003e\u003cb data-path-to-node=\"11,0,0\" data-index-in-node=\"0\"\u003eSodium Hypochlorite (12.5% – 15%):\u003c\/b\u003e\u003cspan\u003e Fully compatible.\u003c\/span\u003e\u003cspan\u003e The 16\" vented cap allows continuous escape of decomposing oxygen gas.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,1,0\"\u003e\u003cb data-path-to-node=\"11,1,0\" data-index-in-node=\"0\"\u003eMuriatic Acid (Hydrochloric Acid, 28% – 31.45%):\u003c\/b\u003e\u003cspan\u003e Fully compatible.\u003c\/span\u003e\u003cspan\u003e Sealed top-draw piping isolates corrosive fumes from mechanical room equipment.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,2,0\"\u003e\u003cb data-path-to-node=\"11,2,0\" data-index-in-node=\"0\"\u003eSulfuric Acid (up to 50% concentration):\u003c\/b\u003e\u003cspan\u003e Fully compatible under ambient equipment room conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,3,0\"\u003e\u003cb data-path-to-node=\"11,3,0\" data-index-in-node=\"0\"\u003eLiquid Coagulants \u0026amp; Polyaluminum Chloride (PAC):\u003c\/b\u003e\u003cspan\u003e Fully compatible; smooth non-stick interior minimizes polymer film buildup.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Commercial Pool and Spa Supplies","offers":[{"title":"Default Title","offer_id":68029783081071,"sku":"DW0120-36","price":2604.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/3785\/3807\/files\/SMS-868-V167-1000112N45-Main__99409.webp?v=1793115437","url":"https:\/\/commercialpoolandspasupplies.com\/products\/120-gallon-double-wall-containment-tank-36-dia-x-51h-16-vented-manway","provider":"Commercial Pool and Spa Supplies ","version":"1.0","type":"link"}