{"title":"WC Flush Valves","description":"\u003cp\u003eFind replacement WC flush valves for repairing or upgrading toilet cisterns. The flush valve is the outlet mechanism that releases stored water into the toilet pan when the button, lever or cable is operated. A worn seal, damaged mechanism or incorrect adjustment can cause constant water loss into the pan, unreliable flushing, a sticking button or an incomplete flush.\u003c\/p\u003e\n\u003cp\u003eOur range includes single-flush and dual-flush valves, telescopic and cut-to-height mechanisms, cable-operated valves and models with adjustable flush volumes. Before ordering, compare the existing valve’s outlet size, overall height, overflow arrangement and operating method. Check whether the flush button operates directly from above, off-centre or through a cable, and confirm that the replacement will fit the cistern opening and available internal space.\u003c\/p\u003e\n\u003cp\u003eAdjustable dual-flush mechanisms can help reduce water use by allowing a smaller flush for liquid waste and a full flush when required. Selected products also include useful installation features such as adjustable dead-water level, off-centre button adjustment, supplied sealing washers and WRAS or NF approval where specifically stated on the product page.\u003c\/p\u003e\n\u003cp\u003eCompatibility varies between ceramic and plastic cisterns, so dimensions and connections should always be checked rather than relying on appearance alone. If the cistern continually refills, inspect both the flush-valve seal and the filling valve because either component may be responsible. GetPlumb stocks dependable WC cistern repair parts for plumbers, maintenance teams and household repairs. If you are unsure which flush valve is required, send us clear photographs of the existing mechanism, flush button and any visible manufacturer or model markings.\u003c\/p\u003e","products":[{"product_id":"siamp-skipper-45-adjustable-dual-wc-flush-valve","title":"Siamp Skipper 45 Adjustable Dual WC Flush Valve","description":"\u003cp\u003eThe Siamp Skipper 45 is an adjustable dual flush valve for compatible ceramic or plastic WC cisterns. Its adjustment range helps match common replacement installations while the supplied actuation arrangement controls the flush from the cistern lid. Check the lid hole, outlet hole and cistern height before ordering.\u003c\/p\u003e\u003cdiv style=\"margin:14px 0;\"\u003e\n\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003eSkipper 45\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003eAdjustable small flush 2 to 4.5 litres\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003eCut-to-height overflow\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003eFoam pan seal supplied\u003c\/span\u003e\n\u003c\/div\u003e\u003ctable style=\"width:100%;border-collapse:collapse;margin:0 0 16px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eSiamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eSkipper 45\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eFlush type\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eDual flush\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eFlow rate\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e3.5 l\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eAdjustable height\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e305 to 455 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eLid hole size\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e40 to 44 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eCistern outlet size\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e72 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eWRAS approved\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eNF certified\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eManufacturer part no.\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e32456010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003ePack quantity\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cdiv style=\"background:#f4f8fc;border-left:4px solid #475569;border-radius:8px;padding:14px 16px;margin:0 0 16px;\"\u003e\n\u003cstrong style=\"color:#475569;\"\u003eInstallation\u003c\/strong\u003e\u003cp style=\"margin:6px 0 0;color:#374151;\"\u003eHand-tighten the flush valve nut to the ceramic and add no more than a quarter turn with a spanner — over-tightening damages the mechanism and is not covered by Siamp’s warranty. Adjust the valve height by unclipping the two rods and clips, and position the small flush float on the opposite side to the inlet valve, 20 mm below the water line. Maximum water level is 20 mm below the overflow. Screw the button down on the lid without pressing its centre. Use no limescale or chlorine cleaners in the cistern.\u003c\/p\u003e\n\u003c\/div\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0858\/5268\/4624\/files\/file-skipper45.pdf\"\u003eSpecification sheet (PDF)\u003c\/a\u003e · \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0858\/5268\/4624\/files\/50_5337_01_LD.pdf\"\u003eInstallation manual (PDF)\u003c\/a\u003e · \u003ca href=\"\/fr\/collections\/toilet-cistern-parts\"\u003eSee related WC cistern parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"Siamp","offers":[{"title":"Default Title","offer_id":53468753887568,"sku":"32456010","price":24.18,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0858\/5268\/4624\/files\/siamp-32456010-1024-crisp_43cc9e14-9bcf-44ef-baee-c4ffe66c7f75.jpg?v=1787764864"},{"product_id":"siamp-storm-33a-adjustable-single-wc-flush-valve","title":"Siamp Storm 33A Adjustable Single WC Flush Valve","description":"\u003cp\u003eThe Siamp Storm 33A is an adjustable single flush valve for compatible ceramic or plastic WC cisterns. Its adjustment range helps match common replacement installations while the supplied actuation arrangement controls the flush from the cistern lid. Check the lid hole, outlet hole and cistern height before ordering.\u003c\/p\u003e\u003cdiv style=\"margin:14px 0;\"\u003e\n\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003eStorm 33A\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003eFull cistern discharge\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003eAdjustable stirrup\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003eCut-to-height overflow\u003c\/span\u003e\n\u003c\/div\u003e\u003ctable style=\"width:100%;border-collapse:collapse;margin:0 0 16px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eSiamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eStorm 33A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eFlush type\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eSingle flush\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eFlow rate\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e3.5 l\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eAdjustable height\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e305 to 415 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eLid hole size\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e18 to 50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eCistern outlet size\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e58 to 72 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eWRAS approved\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eNF certified\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eManufacturer part no.\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e32335510\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003ePack quantity\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cdiv style=\"background:#f4f8fc;border-left:4px solid #475569;border-radius:8px;padding:14px 16px;margin:0 0 16px;\"\u003e\n\u003cstrong style=\"color:#475569;\"\u003eInstallation\u003c\/strong\u003e\u003cp style=\"margin:6px 0 0;color:#374151;\"\u003eMeasure cistern height (lid top to inside base) and lid hole diameter, then set the stirrup notch and cut the overflow to the table in the manual before fitting. Hand-tighten the flush valve nut to the ceramic and add no more than a quarter turn with a spanner — over-tightening damages the mechanism and is not covered by Siamp’s warranty. Maximum water level is 20 mm below the overflow. Remove the rose if the lid hole is under 37 mm or over 42 mm, and screw the button down without pressing its centre. Use no limescale or chlorine cleaners in the cistern.\u003c\/p\u003e\n\u003c\/div\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0858\/5268\/4624\/files\/file-storm33a.pdf\"\u003eSpecification sheet (PDF)\u003c\/a\u003e · \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0858\/5268\/4624\/files\/50_5539_01_LD.pdf\"\u003eInstallation manual (PDF)\u003c\/a\u003e · \u003ca href=\"\/fr\/collections\/toilet-cistern-parts\"\u003eSee related WC cistern parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"Siamp","offers":[{"title":"Default Title","offer_id":53468753985872,"sku":"32335510","price":23.15,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0858\/5268\/4624\/files\/siamp-32335510-1024-crisp_756caf0d-6b83-4bc6-aee6-7931c8a2362a.jpg?v=1787764859"},{"product_id":"siamp-optima-49-telescopic-dual-wc-flush-valve","title":"Siamp Optima 49 Telescopic Dual WC Flush Valve","description":"\u003cp\u003eThe Siamp Optima 49 is an adjustable dual flush valve for compatible ceramic or plastic WC cisterns. Its adjustment range helps match common replacement installations while the supplied actuation arrangement controls the flush from the cistern lid. Check the lid hole, outlet hole and cistern height before ordering.\u003c\/p\u003e\u003cdiv style=\"margin:14px 0;\"\u003e\n\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003eOptima 49\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003eTelescopic adjustment\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003eOff-centre button adjustment\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003eAdjustable small flush 2 to 4.5 litres\u003c\/span\u003e\n\u003c\/div\u003e\u003ctable style=\"width:100%;border-collapse:collapse;margin:0 0 16px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eSiamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eOptima 49\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eFlush type\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eDual flush\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eFlow rate\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e3.5 l\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eAdjustable height\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e282 to 430 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eLid hole size\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e16 to 50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eCistern outlet size\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e58 to 72 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eWRAS approved\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eNF certified\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eManufacturer part no.\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e32499910\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003ePack quantity\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cdiv style=\"background:#f4f8fc;border-left:4px solid #475569;border-radius:8px;padding:14px 16px;margin:0 0 16px;\"\u003e\n\u003cstrong style=\"color:#475569;\"\u003eInstallation\u003c\/strong\u003e\u003cp style=\"margin:6px 0 0;color:#374151;\"\u003eMeasure cistern height (lid top to inside base) and lid hole diameter, then set the stirrup notch and cut the overflow to the table in the manual before fitting. Hand-tighten the flush valve nut to the ceramic and add no more than a quarter turn with a spanner — over-tightening damages the mechanism and is not covered by Siamp’s warranty. Maximum water level is 20 mm below the overflow; set the small flush by sliding the cursor. Remove the escutcheon if the lid hole is 38 to 45 mm. Use no limescale or chlorine cleaners in the cistern.\u003c\/p\u003e\n\u003c\/div\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0858\/5268\/4624\/files\/file-optima49.pdf\"\u003eSpecification sheet (PDF)\u003c\/a\u003e · \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0858\/5268\/4624\/files\/50_5498_01_LD.pdf\"\u003eInstallation manual (PDF)\u003c\/a\u003e · \u003ca href=\"\/fr\/collections\/toilet-cistern-parts\"\u003eSee related WC cistern parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"Siamp","offers":[{"title":"Default Title","offer_id":53468754051408,"sku":"32499910","price":23.67,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0858\/5268\/4624\/files\/siamp-32499910-1024-crisp_90be9271-325e-45e6-9808-a719ea5fe015.jpg?v=1787764868"},{"product_id":"siamp-optima-s-telescopic-dual-wc-flush-valve","title":"Siamp Optima S Telescopic Dual WC Flush Valve","description":"\u003cp\u003eThe Siamp Optima S is an adjustable dual flush valve for compatible ceramic or plastic WC cisterns. Its adjustment range helps match common replacement installations while the supplied actuation arrangement controls the flush from the cistern lid. Check the lid hole, outlet hole and cistern height before ordering.\u003c\/p\u003e\u003cdiv style=\"margin:14px 0;\"\u003e\n\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003eOptima S\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003eTelescopic overflow\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003eOff-centre button adjustment\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003eAdjustable small flush 2 to 4.5 litres\u003c\/span\u003e\n\u003c\/div\u003e\u003ctable style=\"width:100%;border-collapse:collapse;margin:0 0 16px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eSiamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eOptima S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eFlush type\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eDual flush\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eFlow rate\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e3.5 l\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eAdjustable height\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e282 to 432 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eLid hole size\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e16 to 50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eCistern outlet size\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e58 to 72 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eWRAS approved\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eNF certified\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eManufacturer part no.\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e32700410\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003ePack quantity\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cdiv style=\"background:#f4f8fc;border-left:4px solid #475569;border-radius:8px;padding:14px 16px;margin:0 0 16px;\"\u003e\n\u003cstrong style=\"color:#475569;\"\u003eInstallation\u003c\/strong\u003e\u003cp style=\"margin:6px 0 0;color:#374151;\"\u003eMeasure cistern height and lid hole diameter, then set the telescopic overflow and lift rod to the height table in the manual before fitting. Hand-tighten the flush valve nut to the ceramic and add no more than a quarter turn — over-tightening damages the mechanism and is not covered by Siamp’s warranty. Maximum water level is 20 mm below the overflow. Fit the button to suit a 16 to 38 mm, 39 to 42 mm or 43 to 50 mm lid hole as shown in the manual. Use no limescale or chlorine cleaners in the cistern.\u003c\/p\u003e\n\u003c\/div\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0858\/5268\/4624\/files\/file-optimas.pdf\"\u003eSpecification sheet (PDF)\u003c\/a\u003e · \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0858\/5268\/4624\/files\/50_6736_00_LD.pdf\"\u003eInstallation manual (PDF)\u003c\/a\u003e · \u003ca href=\"\/fr\/collections\/toilet-cistern-parts\"\u003eSee related WC cistern parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"Siamp","offers":[{"title":"Default Title","offer_id":53468754084176,"sku":"32700410","price":29.6,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0858\/5268\/4624\/files\/siamp-32700410-1024-crisp_acb6f058-08c9-485e-acbd-d139fcd878ad.jpg?v=1787764873"},{"product_id":"siamp-optima-50-cable-operated-dual-wc-flush-valve-1-5in-and-2in-outlet","title":"Siamp Optima 50 Cable-Operated Dual WC Flush Valve - 1.5in and 2in Outlet","description":"\u003cp\u003eThe Siamp Optima 50 is an adjustable dual flush valve for compatible ceramic or plastic WC cisterns. Its adjustment range helps match common replacement installations while the supplied actuation arrangement controls the flush from the cistern lid. Check the lid hole, outlet hole and cistern height before ordering.\u003c\/p\u003e\u003cdiv style=\"margin:14px 0;\"\u003e\n\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003eOptima 50\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003e495 mm cable operation\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003eRemote, lateral or head-on actuation\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin:0 6px 8px 0;\"\u003eAdjustable small flush 2 to 4.5 litres\u003c\/span\u003e\n\u003c\/div\u003e\u003ctable style=\"width:100%;border-collapse:collapse;margin:0 0 16px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eSiamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eOptima 50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eFlush type\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eDual flush\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eFlow rate\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e3.5 l\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eAdjustable height\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e272 to 482 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eLid hole size\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e16 to 50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eCistern outlet size\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e58 to 72 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eWRAS approved\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eNF certified\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003eManufacturer part no.\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e32500210\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;background:#f4f8fc;font-weight:600;width:45%;\"\u003ePack quantity\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #cbd5e1;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cdiv style=\"background:#f4f8fc;border-left:4px solid #475569;border-radius:8px;padding:14px 16px;margin:0 0 16px;\"\u003e\n\u003cstrong style=\"color:#475569;\"\u003eInstallation\u003c\/strong\u003e\u003cp style=\"margin:6px 0 0;color:#374151;\"\u003eHand-tighten the flush valve nut to the ceramic and add no more than a quarter turn with a spanner — over-tightening damages the mechanism and is not covered by Siamp’s warranty. Mount the button on the lid with its nut, remove the escutcheon if the lid hole is 38 to 45 mm, and clip the cable case before replacing the lid. Maximum water level is 20 mm below the overflow. Use no limescale or chlorine cleaners in the cistern.\u003c\/p\u003e\n\u003c\/div\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0858\/5268\/4624\/files\/file-optima50.pdf\"\u003eSpecification sheet (PDF)\u003c\/a\u003e · \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0858\/5268\/4624\/files\/50_5531_00_LD.pdf\"\u003eInstallation manual (PDF)\u003c\/a\u003e · \u003ca href=\"\/fr\/collections\/toilet-cistern-parts\"\u003eSee related WC cistern parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"Siamp","offers":[{"title":"Default Title","offer_id":53468754215248,"sku":"32500210","price":24.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0858\/5268\/4624\/files\/siamp-32500210-1024-crisp_ea7c4ae6-5bee-4c29-bbf1-34e39503e974.jpg?v=1787764878"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0858\/5268\/4624\/collections\/wc-flush-valves-8056535.jpg?v=1787816294","url":"https:\/\/getplumb.co.uk\/fr\/collections\/wc-flush-valves.oembed","provider":"Getplumb","version":"1.0","type":"link"}