{"product_id":"mcalpine-st90cpb-s-70","title":"McAlpine ST90CPB-S-70 Shallow Shower Trap – 90mm | 70mm Height | 50mm Seal","description":"\u003cp\u003eThe \u003cstrong\u003eMcAlpine ST90CPB-S-70\u003c\/strong\u003e is a shallow shower trap engineered for low-profile installations where sub-floor clearance is limited. At 70mm overall height with a superior 50mm water seal and 34 litre\/min flow rate, it delivers full performance in space-constrained applications — ideal for timber floor constructions, low-profile shower trays, and bathroom renovation projects. The 1½″ BSP solvent weld outlet connects to standard 40mm waste pipework, and the polypropylene body is fully compliant with BS EN 274-1:2002 and BS EN 274-2:2002.\u003c\/p\u003e\n\n\u003cdiv style=\"background:#f8f8f8;border:1px solid #ddd;border-radius:4px;padding:12px 16px;margin-bottom:20px;\"\u003e\n\u003cstrong\u003e⚠️ Check tray thickness and clearance before ordering.\u003c\/strong\u003e The ST90CPB-S-70 suits \u003cstrong\u003etray thickness 5–30mm\u003c\/strong\u003e and requires \u003cstrong\u003e70mm clearance beneath the tray\u003c\/strong\u003e. If your tray is 0–23mm thick and you need a Multifit outlet, see the \u003ca href=\"\/products\/90mm-shallow-shower-trap-70mm-high\"\u003eMcAlpine ST90CB10-70\u003c\/a\u003e. If you have less than 70mm clearance, see the \u003ca href=\"\/products\/mcalpine-shallow-seal-trap-st90cpb-s-53-slim\"\u003eMcAlpine ST90CPB-S-53 (53mm height)\u003c\/a\u003e.\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e70mm overall height\u003c\/strong\u003e — suitable for low-profile installations with restricted sub-floor depth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50mm water seal\u003c\/strong\u003e — superior odour protection; well above the minimum 25mm requirement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e34 litres\/min flow rate\u003c\/strong\u003e — high drainage performance; prevents water pooling\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e90mm waste hole\u003c\/strong\u003e — fits standard shower trays with 90mm waste apertures\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSuits tray thickness 5–30mm\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1½″ BSP solvent weld outlet\u003c\/strong\u003e — connects to standard 40mm waste pipework\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemovable 110mm flange\u003c\/strong\u003e — easy cleaning without disturbing the trap body\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete installation kit\u003c\/strong\u003e — 135° bend, BSP coupling nut, and 1½″ universal connector included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolypropylene construction\u003c\/strong\u003e — durable and corrosion resistant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBS EN 274 compliant\u003c\/strong\u003e — tested to BS EN 274-1:2002 and BS EN 274-2:2002\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specification\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e McAlpine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e ST90CPB-S-70\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e ST90CPB-S-70\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEAN:\u003c\/strong\u003e 5036484043870\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Shallow shower trap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaste hole diameter:\u003c\/strong\u003e 90mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall height:\u003c\/strong\u003e 70mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnder-tray clearance required:\u003c\/strong\u003e 70mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable tray thickness:\u003c\/strong\u003e 5–30mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater seal depth:\u003c\/strong\u003e 50mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow rate:\u003c\/strong\u003e 34 litres\/min (tested under 15mm constant head, BS EN 274-2:2002)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread size:\u003c\/strong\u003e 1½″ BSP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet:\u003c\/strong\u003e 1½″ solvent weld\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlange diameter:\u003c\/strong\u003e 110mm (removable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody material:\u003c\/strong\u003e Polypropylene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.35kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e United Kingdom\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e BS EN 274-1:2002 \u0026amp; BS EN 274-2:2002\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMcAlpine ST90CPB-S-70 shallow shower trap body\u003c\/li\u003e\n\u003cli\u003e110mm removable flange\u003c\/li\u003e\n\u003cli\u003e135° bend\u003c\/li\u003e\n\u003cli\u003eBSP coupling nut\u003c\/li\u003e\n\u003cli\u003e1½″ universal connector\u003c\/li\u003e\n\u003cli\u003eInstallation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAlso Available — McAlpine Shallow Shower Traps\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/90mm-shallow-shower-trap-70mm-high\"\u003eMcAlpine ST90CB10-70 — 90mm, 70mm Height, 50mm Seal, Multifit Outlet\u003c\/a\u003e — suits tray thickness 0–23mm; Multifit outlet for plastic, copper \u0026amp; lead pipe\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/mcalpine-shallow-seal-trap-st90cpb-s-53-slim\"\u003eMcAlpine ST90CPB-S-53 — 90mm, 53mm Height, 25mm Seal\u003c\/a\u003e — for severely restricted clearance where 70mm is not available\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCoordinate Your Shower Installation\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/shower-trays\"\u003eShower Trays\u003c\/a\u003e — browse compatible low profile trays\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/shower-enclosures\"\u003eShower Enclosures\u003c\/a\u003e — complete your shower installation\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/showering\"\u003eShower Valves \u0026amp; Accessories\u003c\/a\u003e — valves, heads, and arms\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhat is the difference between the ST90CPB-S-70 and the ST90CB10-70?\u003c\/h3\u003e\n\u003cp\u003eBoth are McAlpine 90mm shallow traps with 70mm height, 50mm water seal, and 34L\/min flow rate. The key difference is \u003cstrong\u003etray thickness compatibility and outlet type\u003c\/strong\u003e. The \u003cstrong\u003eST90CPB-S-70\u003c\/strong\u003e (this product) suits tray thickness \u003cstrong\u003e5–30mm\u003c\/strong\u003e and has a \u003cstrong\u003e1½″ solvent weld outlet\u003c\/strong\u003e. The \u003ca href=\"\/products\/90mm-shallow-shower-trap-70mm-high\"\u003e\u003cstrong\u003eST90CB10-70\u003c\/strong\u003e\u003c\/a\u003e suits tray thickness \u003cstrong\u003e0–23mm\u003c\/strong\u003e and has a \u003cstrong\u003eMultifit outlet\u003c\/strong\u003e compatible with plastic, copper, and lead pipe. Check your tray thickness and pipework type before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eWhat clearance does this trap require beneath the shower tray?\u003c\/h3\u003e\n\u003cp\u003eThe ST90CPB-S-70 has an overall height of \u003cstrong\u003e70mm\u003c\/strong\u003e and requires \u003cstrong\u003e70mm of clearance beneath the shower tray\u003c\/strong\u003e. Measure the available depth between the underside of your shower tray and the floor before ordering. If you have less than 70mm available, see the \u003ca href=\"\/products\/mcalpine-shallow-seal-trap-st90cpb-s-53-slim\"\u003eMcAlpine ST90CPB-S-53 (53mm height)\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eWhat tray thickness is this trap suitable for?\u003c\/h3\u003e\n\u003cp\u003eThe ST90CPB-S-70 suits shower trays with a thickness of \u003cstrong\u003e5–30mm\u003c\/strong\u003e. If your tray is thinner (0–23mm), the \u003ca href=\"\/products\/90mm-shallow-shower-trap-70mm-high\"\u003eST90CB10-70\u003c\/a\u003e may be more appropriate — check the overlap range for your specific tray thickness.\u003c\/p\u003e\n\n\u003ch3\u003eWhat type of outlet connection does this trap use?\u003c\/h3\u003e\n\u003cp\u003eThe outlet is \u003cstrong\u003e1½″ BSP solvent weld\u003c\/strong\u003e, connecting to standard 40mm (1½″) solvent weld waste pipe. A 135° bend, BSP coupling nut, and 1½″ universal connector are included to allow flexible pipe routing beneath the tray.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is the water seal depth, and why does it matter?\u003c\/h3\u003e\n\u003cp\u003eThe water seal depth is \u003cstrong\u003e50mm\u003c\/strong\u003e. The water seal is the depth of water retained in the trap that prevents sewer gases from entering the bathroom. The minimum required by UK building regulations is 25mm. A 50mm seal provides significantly better odour protection and is less likely to evaporate in infrequently used showers. If clearance is too restricted for this trap, the \u003ca href=\"\/products\/mcalpine-shallow-seal-trap-st90cpb-s-53-slim\"\u003eST90CPB-S-53\u003c\/a\u003e offers a 25mm seal at just 53mm height.\u003c\/p\u003e\n\n\u003ch3\u003eIs this trap BS EN 274 compliant?\u003c\/h3\u003e\n\u003cp\u003eYes — the McAlpine ST90CPB-S-70 is fully compliant with \u003cstrong\u003eBS EN 274-1:2002\u003c\/strong\u003e (requirements) and \u003cstrong\u003eBS EN 274-2:2002\u003c\/strong\u003e (test methods), the relevant British and European standard for sanitary waste fittings.\u003c\/p\u003e\n\n\u003ch3\u003eCan I order if the item shows as out of stock?\u003c\/h3\u003e\n\u003cp\u003eYes — this product is available to order even when stock shows as zero. Please allow additional lead time and contact us at \u003ca href=\"mailto:customerservice@bubblegumbathrooms.co.uk\"\u003ecustomerservice@bubblegumbathrooms.co.uk\u003c\/a\u003e for availability.\u003c\/p\u003e\n\n\u003ch2\u003eDelivery Information\u003c\/h2\u003e\n\u003cp\u003eThis is a small, postable item covered by a one-off small item delivery charge. You can combine it with other small items in a single order and pay just one delivery charge. \u003ca href=\"\/collections\/small-items\" target=\"_blank\"\u003eBrowse all items covered by the small delivery charge\u003c\/a\u003e.\u003c\/p\u003e","brand":"McAlpine","offers":[{"title":"Default Title","offer_id":52651932123473,"sku":"ST90CPB-S-70","price":34.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/3687\/9441\/files\/ST90CPB-S-70.png?v=1770391872","url":"https:\/\/www.bubblegumbathrooms.com\/products\/mcalpine-st90cpb-s-70","provider":"Bubblegum Bathrooms","version":"1.0","type":"link"}