Toilet Cistern Spares & Replacement Parts

Keep your Geberit ceramic cistern installation performing at its best with this genuine Geberit flush pipe set. The D50/44 flush pipe connects the cistern outlet to the WC pan, and over time seals and fittings can wear or crack. This genuine Geberit replacement set (ref. 261.617.00.1) restores a watertight connection and is covered by a minimum 1 year Geberit manufacturer’s guarantee. Key Features Genuine Geberit replacement part — OEM specification for a reliable fit D50/44 flush pipe set — connects cistern outlet to WC pan Restores watertight connection — fixes leaks and inefficient flushing Minimum 1 year Geberit manufacturer’s guarantee Easy to install Technical Specification Brand: Geberit Part Reference: 261.617.00.1 Type: Flush pipe set Pipe diameter: D50/44 Guarantee: Minimum 1 year Geberit manufacturer’s guarantee Country of Origin: Switzerland Barcode: 4025416343370 Delivery Information This 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. Browse all items covered by the small delivery charge. Other Geberit Spare Parts Geberit Flat Gasket for Flush Valve | Silicone Seal | 816.418.00.1 Geberit Type 380 Fill Valve Diaphragm Seal | Ref: 240.771.00.1 Geberit Type 380AG Side Supply Fill Valve | Universal Fit Geberit Type 208 Flush Valve | Sigma 8cm Concealed Cisterns | 241.290.00.1 Geberit Kappa15 Dual Flush Valve | UP200 Concealed Cistern | 240.638.00.1 Frequently Asked Questions What does this flush pipe set do?The flush pipe connects the outlet of the ceramic cistern to the inlet of the WC pan, directing water from the cistern into the bowl during flushing. Over time the pipe or its seals can degrade, leading to leaks or poor flush performance. This replacement set restores the connection. How do I know if this is the right part for my cistern?This set fits Geberit ceramic cisterns with a D50/44 outlet. The part reference 261.617.00.1 is printed on genuine Geberit parts and packaging. If you’re unsure, email us with your cistern model and we’ll confirm before you order. Is this a genuine Geberit part?Yes — this is a brand new, genuine Geberit part covered by a minimum 1 year Geberit manufacturer’s guarantee. How quickly will my order be dispatched?If the item shows as in stock, it will be dispatched within 48 hours. If the item is showing as 0 stock, it is ordered in specially for you and will typically be dispatched within 4 working days. Can I order if the item shows as out of stock?Yes — you can still place an order and we’ll source it for you. Delivery is typically within 4 working days of your order. Is delivery free?This is a small postable item with a one-off small item delivery charge. You can combine multiple small items in one order and pay a single charge. I need help finding the right Geberit part — can you help?Of course. Contact us at customerservice@bubblegumbathrooms.co.uk or call 01603 381095 and we’ll identify the correct part for your cistern.

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Replace the internal components of your toilet cistern with this universal kit, containing genuine R&T parts sold by Bubblegum Bathrooms. Available as a complete Full Kit or as individual components — select your required part from the dropdown above. The kit suits cisterns with an internal height (base to lid) of 28–40cm and a lid hole of 60–70mm. What’s in the Full Kit A1370 Fill Valve — R&T 1/2" BSP bottom entry inlet valve, WRAS approved. Overall height approx. 350mm; adjustable water level 180–250mm A2473 Flush Valve — R&T dual flush valve. Suits 60–70mm Cistern hole; 23cm valve body height; cuttable overflow tube (cut to adjust height) Chrome Flush Button — dual flush push button in chrome finish Fixings & Doughnut Washer — plastic cistern-to-pan bolts and doughnut washer for a complete installation Individual Parts Available Need just one component? Select from the dropdown: Full Kit (PJH3604) — all parts listed above A1370 Fill Valve only — 1/2" bottom entry, WRAS approved, adjustable 180–250mm A2473 Flush Valve only — dual flush, 60–70mm hole, cuttable overflow Flush Button (PJH3690) — chrome dual flush button only Fixings & Doughnut — cistern-to-pan bolts and doughnut washer only Technical Specification Fill Valve (A1370): R&T | 1/2" BSP bottom entry | Total height approx. 350mm | Adjustable water level 180–250mm | WRAS approved Flush Valve (A2473): R&T | Dual flush | Suits tank hole 60–70mm | Body height 23cm | Cuttable overflow tube Flush Button: Chrome finish | Dual flush Cistern height compatibility: 28–40cm (internal base to top of lid) Full Kit SKU: PJH3604 | Barcode: 505491354757 Flush Button SKU: PJH3690 Country of Origin: China Delivery Information This 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. Browse all items covered by the small delivery charge. Related Cistern Spares Fluidmaster PRO400UK 1/2" Bottom Entry Fill Valve | Height Adjustable 230–355mm Fluidmaster PRO45B Professional Brass Shank Fill Valve | 1/2" Bottom Entry Siamp Optima 49 Dual Flush Valve | Universal Fit | Plastic & Ceramic Cisterns Fluidmaster PRO750UK Professional Dual Flush Valve | Universal Fit Frequently Asked Questions How do I know if this kit fits my cistern?Check the internal height of your cistern from the base of the tank to the underside of the lid — it should be between 28cm and 40cm. Also confirm your lid hole diameter is between 60mm and 70mm. If you’re unsure, email us with your cistern make and model and we’ll confirm before you order. What is the A2473 overflow tube adjustment?Unlike the older telescopic model, the A2473 overflow tube is cut to the correct height rather than extended. Measure your required height and cut the tube accordingly during installation. Is the fill valve WRAS approved?Yes — the A1370 fill valve carries WRAS (Water Regulations Advisory Scheme) approval, confirming it meets UK water fittings regulations for use in potable water systems. Can I buy individual parts rather than the full kit?Yes — all five components are available individually. Select your required part from the dropdown at the top of the page. How quickly will my order be dispatched?If the item shows as in stock, Order before 2pm for same working day dispatch. If the item is showing as 0 stock, it is ordered in and dispatched within 3 working days of ordering Can I order if the item shows as out of stock?Yes — you can still place an order and we’ll source it for you. Contact us at customerservice@bubblegumbathrooms.co.uk or call 01603 381095 if you need a lead time estimate. Is delivery free?This is a small postable item with a one-off small item delivery charge. You can combine multiple small items in one order and pay a single charge.

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The Siamp Optima 49 is a high-performance universal dual flush valve designed to replace worn or faulty flush valves in a wide range of plastic and ceramic toilet cisterns. With an adjustable small flush volume (2–4.5L), cuttable overflow tube, and off-centre button compatibility, the Optima 49 offers a versatile, reliable fit across many cistern brands and configurations. A foam pan seal is included to compensate for pan irregularities. ⚠️ Compatibility Notice: The Siamp Optima 49 fits lid holes from 16mm to 50mm and is suitable for plastic and ceramic cisterns. Button offset up to ±15mm is supported. Please measure your lid hole diameter and check your cistern type before ordering. If you’re unsure, contact us and we’ll help confirm the correct part. Key Features Universal fit — suits plastic and ceramic cisterns with lid holes from 16mm to 50mm Dual flush — separate half and full flush buttons for water efficiency Adjustable small flush volume — from 2L to 4.5L to suit your needs Off-centre button compatible — offset up to ±15mm supported Cuttable overflow tube — adjustable in 4mm increments for precise fit Adjustable stirrup — adjustable in 12mm increments Adjustable dead water level High flush rate — 3.5L/s for effective bowl clearing Low actuation effort — below 20 Newton for easy operation Foam pan seal included — compensates for pan irregularities Technical Specification Brand: Siamp Model: Optima 49 SKU: 32499910 Compatible cisterns: Plastic and ceramic cisterns Lid hole diameter: 16mm – 50mm (with or without collar depending on diameter) Button offset: ±15mm off-centre Small flush volume: Adjustable 2L – 4.5L Flush rate: 3.5L/s Actuation effort: Below 20 Newton Overflow adjustment: Cuttable in 4mm increments Stirrup adjustment: 12mm increments Included: Foam pan seal Country of Origin: France Barcode: 3247230071296 Delivery Information This 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. Browse all items covered by the small delivery charge. Related Cistern Spares Siamp Replacement Rubber Seal | Storm 33A / Skipper 36A / 45 Inlet Valves Fluidmaster PRO750UK Professional Dual Flush Valve | Universal Fit Fluidmaster PRO820UK Replacement Dual Flush Button & Rod Frequently Asked Questions What cisterns is the Siamp Optima 49 compatible with?The Optima 49 is a universal valve designed to fit a wide range of plastic and ceramic cisterns. It supports lid hole diameters from 16mm to 50mm (with or without collar) and an off-centre button offset of up to ±15mm. If you’re unsure whether it fits your cistern, measure your lid hole diameter and contact us to confirm. How do I adjust the small flush volume?The small flush volume is adjustable between 2L and 4.5L. The adjustment is made during installation using the valve’s built-in mechanism — refer to the installation guide included with the valve. Can I cut the overflow tube to fit my cistern?Yes — the overflow tube can be cut in 4mm increments to achieve the correct height for your cistern. What is the foam pan seal for?The foam pan seal is included to help create a better seal between the cistern and the WC pan, compensating for minor irregularities on the pan surface. How quickly will my order be dispatched?If the item shows as in stock, it will be dispatched within 48 hours. If the item is showing as 0 stock, it is ordered in specially for you and will typically be dispatched within 4 working days. Can I order if the item shows as out of stock?Yes — you can still place an order and we’ll source it for you. Contact us at customerservice@bubblegumbathrooms.co.uk or call 01603 381095 if you need a lead time estimate. Is delivery free?This is a small postable item with a one-off small item delivery charge. You can combine multiple small items in one order and pay a single charge.

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Replace a worn or damaged flush button on your Geberit Type 230 or 240 flush valve with this genuine Geberit chrome gloss actuator (part ref. 238.501.21.1). The dual flush button lets users choose between a half or full flush for water efficiency, and the polished chrome finish gives a clean, classic look suited to both residential and commercial bathrooms. ⚠️ Compatibility Notice: This actuator is designed specifically for Geberit Type 230 and Type 240 flush valves. It is not compatible with other Geberit flush valve types. Please confirm your flush valve model before ordering. If you’re unsure, contact us with your cistern model and we’ll confirm the correct part. Key Features Genuine Geberit replacement actuator — OEM specification, not an aftermarket copy Compatible with Geberit Type 230 & 240 flush valves Dual flush operation — choose between half flush and full flush for water efficiency Chrome gloss finish — classic polished look for residential and commercial bathrooms Direct replacement — designed for a perfect fit with no modification Minimum 1 year Geberit manufacturer’s guarantee Technical Specification Brand: Geberit Part Reference / SKU: 238.501.21.1 Type: Flush button actuator Finish: Chrome gloss Flush type: Dual flush Compatible flush valves: Geberit Type 230 & Type 240 Country of Origin: Germany Delivery Information This 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. Browse all items covered by the small delivery charge. Other Geberit Spare Parts Geberit Type 380AG Side Supply Fill Valve | Universal Fit | 244.595.00.1 Geberit Type 380AG Fill Valve | Lateral Supply 3/8" Brass Nipple | 244.510.00.1 Geberit Type 380 Fill Valve Diaphragm Seal | 240.771.00.1 Geberit Flat Gasket for Flush Valve | Silicone Seal | 816.418.00.1 Geberit Type 208 Flush Valve | Sigma 8cm Concealed Cisterns | 241.290.00.1 Geberit Flush Pipe Set D50/44 | 261.617.00.1 Frequently Asked Questions Which Geberit flush valves does this button fit?This actuator is designed specifically for Geberit Type 230 and Type 240 flush valves. It is not compatible with other Geberit flush valve types such as the Type 208 or Kappa range. If you’re unsure of your valve type, check the label on your cistern or email us with a photo and we’ll confirm before you order. Is this a genuine Geberit part?Yes — this is a brand new, genuine Geberit actuator (ref. 238.501.21.1), not an aftermarket copy. It is covered by a minimum 1 year Geberit manufacturer’s guarantee. How does the dual flush work?Press the smaller button for a half flush (reduced water volume) or the larger button for a full flush. This helps conserve water for liquid waste while retaining the full flush option when needed. How quickly will my order be dispatched?If the item shows as in stock, it will be dispatched within 48 hours. If the item is showing as 0 stock, it is ordered in specially for you and will typically be dispatched within 4 working days. Can I order if the item shows as out of stock?Yes — you can still place an order and we’ll source it for you. Contact us at customerservice@bubblegumbathrooms.co.uk or call 01603 381095 if you need a lead time estimate. Is delivery free?This is a small postable item with a one-off small item delivery charge. You can combine multiple small items in one order and pay a single charge. I need help identifying the right Geberit part — can you help?Of course. Contact us at customerservice@bubblegumbathrooms.co.uk or call 01603 381095.

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The Geberit Type 380AG fill valve with lateral (side) water supply connection, 3/8" thread, and brass nipple (part ref. 244.510.00.1). This genuine Geberit replacement part supersedes the earlier ref. 242.983.00.1 and delivers reliable, quiet cistern filling built to Geberit’s exacting quality standards, covered by a minimum 1 year manufacturer’s guarantee. ⚠️ Compatibility Notice: This fill valve has a lateral (side) water supply connection with a 3/8" brass nipple. Please confirm your cistern’s connection type and thread size before ordering. If you’re unsure, contact us with your cistern model and we’ll confirm the correct part. Note: If you need the universal side supply version for Sigma, Omega, Delta and Monolith cisterns, see the Type 380AG 244.595.00.1 instead. Key Features Genuine Geberit replacement part — supersedes ref. 242.983.00.1 Lateral (side) water supply connection 3/8" thread with brass nipple Quiet, reliable cistern filling Wide pressure range — suitable for most UK domestic water supplies Minimum 1 year Geberit manufacturer’s guarantee Technical Specification Brand: Geberit Model: Type 380AG Part Reference / SKU: 244.510.00.1 Supersedes: 242.983.00.1 Connection type: Lateral (side) supply Thread size: 3/8" Nipple material: Brass Guarantee: Minimum 1 year Geberit manufacturer’s guarantee Country of Origin: Germany Barcode: 4025410755100 Delivery Information This 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. Browse all items covered by the small delivery charge. Other Geberit Spare Parts Geberit Type 380AG Side Supply Fill Valve | Universal Fit | 244.595.00.1 Geberit Type 380 Fill Valve Diaphragm Seal | 240.771.00.1 Geberit Flat Gasket for Flush Valve | Silicone Seal | 816.418.00.1 Geberit Type 208 Flush Valve | Sigma 8cm Concealed Cisterns | 241.290.00.1 Geberit Flush Pipe Set D50/44 | 261.617.00.1 Geberit Kappa15 Dual Flush Valve | UP200 Concealed Cistern | 240.638.00.1 Frequently Asked Questions What is the difference between this and the Type 380AG 244.595.00.1?The 244.595.00.1 is the universal side supply version designed for Geberit Sigma, Omega, Delta and Monolith cisterns. This version (244.510.00.1) has a lateral connection with a 3/8" brass nipple and is a different specific configuration. If you’re unsure which you need, contact us with your cistern model. What does this part supersede?This part (244.510.00.1) is the current Geberit replacement for the earlier ref. 242.983.00.1. If your documentation or old parts reference 242.983.00.1, this is the correct current replacement. Is this a genuine Geberit part?Yes — this is a brand new, genuine Geberit part covered by a minimum 1 year Geberit manufacturer’s guarantee, not an aftermarket copy. How do I confirm compatibility with my cistern?Check your cistern model number (usually printed inside the cistern lid or on the cistern body) and confirm the water supply connection is a lateral 3/8" connection with brass nipple. If you’re unsure, email us and we’ll confirm the correct part before you order. How quickly will my order be dispatched?If the item shows as in stock, it will be dispatched within 48 hours. If the item is showing as 0 stock, it is ordered in specially for you and will typically be dispatched within 4 working days. Can I order if the item shows as out of stock?Yes — you can still place an order and we’ll source it for you. Contact us at customerservice@bubblegumbathrooms.co.uk or call 01603 381095 if you need a lead time estimate. Is delivery free?This is a small postable item with a one-off small item delivery charge. You can combine multiple small items in one order and pay a single charge.

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Restore your Dudley Turbo S1-11 syphon to full working order with this genuine Dudley spares pack. Designed specifically for the 2-part Turbo S1-11 syphon flush mechanism, this kit contains the replacement parts needed to fix common flushing issues — saving you the cost of a full syphon replacement. A trusted repair solution from one of the UK’s leading cistern component manufacturers. ⚠️ Compatibility Notice: This spares pack is designed specifically for the Dudley Turbo S1-11 2-part syphon. Please confirm your syphon model before ordering. If you’re unsure, email us with a photo of your syphon and we’ll confirm the correct kit. Key Features Genuine Dudley replacement parts — OEM specification for a reliable fit Designed for the Turbo S1-11 2-part syphon Fixes common flushing faults — weak flush, no flush, or continuous running Cost-effective repair — avoids full syphon or cistern replacement Easy to install — straightforward DIY repair Made in the UK by a trusted cistern components manufacturer Technical Specification Brand: Dudley Compatible syphon: Dudley Turbo S1-11 (2-part) Type: Syphon spares/repair pack Country of Origin: United Kingdom Barcode: 5013241683074 Delivery Information This 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. Browse all items covered by the small delivery charge. Frequently Asked Questions How do I know if this pack fits my syphon?This spares pack is designed exclusively for the Dudley Turbo S1-11 2-part syphon. The syphon model is usually printed on the syphon body inside the cistern. If you’re unsure, send us a photo at customerservice@bubblegumbathrooms.co.uk and we’ll confirm the correct parts before you order. What symptoms suggest I need a syphon spares pack?Common signs include a weak or incomplete flush, having to hold the handle down to flush, the cistern not refilling properly after flushing, or water continuously running into the bowl. These are typically caused by worn diaphragm washers or other internal syphon components — exactly what this pack addresses. What’s included in the pack?The pack contains the genuine Dudley replacement parts for the Turbo S1-11 2-part syphon. For a full list of included components, please contact us or refer to the Dudley product documentation. How quickly will my order be dispatched?If the item shows as in stock, it will be dispatched within 48 hours. If the item is showing as 0 stock, it is ordered in specially for you and will typically be dispatched within 4 working days. Can I order if the item shows as out of stock?Yes — you can still place an order and we’ll source it for you. Delivery is typically within 4 working days of your order. Is delivery free?This is a small postable item with a one-off small item delivery charge. You can combine multiple small items in one order and pay a single charge. I’m not sure which part I need — can you help?Of course. Contact us at customerservice@bubblegumbathrooms.co.uk or call 01603 381095 and we’ll identify the right spares pack for your syphon.

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Keep your Siamp inlet valve in perfect working order with this genuine Siamp replacement rubber seal. Compatible with the Storm 33A, Skipper 36A, and 45 inlet valve models, this seal restores a watertight fit and prevents slow-fill or constant-running cistern issues — at a fraction of the cost of replacing the full valve. ⚠️ Compatibility Notice: This rubber seal is compatible with the following Siamp inlet valve models: Storm 33A, Skipper 36A and 45. Please confirm your valve model before ordering. If you’re unsure, email us with a photo of your valve and we’ll confirm the correct part. Key Features Genuine Siamp replacement part — OEM specification for a reliable fit Compatible with Storm 33A, Skipper 36A & 45 inlet valve models Restores watertight seal — fixes slow-fill, constant running, or dripping cisterns Quick and easy to install — no specialist tools required Cost-effective repair — avoids full valve replacement Technical Specification Brand: Siamp Part Number: 34233209 Material: Rubber Compatible valves: Storm 33A / Skipper 36A / 45 Country of Origin: France Barcode: 3247230090020 Delivery Information This 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. Browse all items covered by the small delivery charge. Complete Your Siamp Repair Browsing other Siamp replacement parts? Siamp Optima 49 Replacement Flush Button — Chrome & Satin Frequently Asked Questions How do I know if this seal fits my valve?This seal is designed for the Siamp Storm 33A, Skipper 36A, and 45 inlet valves. The valve model is usually printed on the valve body inside the cistern. If you’re unsure, send us a photo at customerservice@bubblegumbathrooms.co.uk and we’ll confirm the correct part before you order. What symptoms suggest I need a new rubber seal?Common signs of a worn or damaged inlet valve seal include a constantly running cistern, slow refill after flushing, water dripping into the bowl, or the cistern not filling to the correct level. Replacing the seal is often all that’s needed to resolve these issues. How quickly will my order be dispatched?If the item shows as in stock, it will be dispatched within 48 hours. If the item is showing as 0 stock, it is ordered in specially for you and will typically be dispatched within 4 working days. Can I order if the item shows as out of stock?Yes — you can still place an order and we’ll source it for you. Delivery is typically within 4 working days of your order. Is delivery free?This is a small postable item with a one-off small item delivery charge. You can combine multiple small items in one order and pay a single charge. I’m not sure which Siamp part I need — can you help?Of course. Contact us at customerservice@bubblegumbathrooms.co.uk or call 01603 381095 and we’ll identify the right part for your cistern.

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The Fluidmaster PRO45B is the professional plumber’s choice when only the best will do. Its heavy-duty brass shank won’t crack, corrode, or strip — outperforming plastic-shanked alternatives in demanding residential and commercial installations alike. A specially engineered shank design eliminates water hammer and delivers ultra-quiet operation, backed by a 5-year manufacturer’s warranty from the company that invented the fill valve in 1958. Key Features Heavy-duty brass shank — won’t crack, corrode, or strip; outlasts plastic alternatives Ultra-quiet operation — engineered shank design eliminates water hammer and noise Universal fit — compatible with all major toilet brands with 1/2" bottom-entry connections Tool-free water level adjustment — twist the adjustment rod to set float height Code approved — complies with Water Supply (Water Fittings) Regulations 5-year manufacturer’s warranty Technical Specification Brand: Fluidmaster Model: PRO45B SKU: K07084 Connection type: Bottom entry Connection size: 1/2" BSP Shank material: Brass Max water pressure: 150 psi (10.3 bar) Warranty: 5 years Compliance: Code approved; meets UK Water Supply (Water Fittings) Regulations Country of Origin: Spain Barcode: 039961455420 Delivery Information This 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. Browse all items covered by the small delivery charge. Other Fluidmaster Products Fluidmaster PRO400UK 1/2" Bottom Entry Fill Valve | Height Adjustable 230–355mm Fluidmaster PRO750UK Professional Dual Flush Valve | Universal Fit Fluidmaster PRO820UK Replacement Dual Flush Button & Rod Frequently Asked Questions What’s the difference between the PRO45B and PRO400UK?Both are 1/2" bottom entry fill valves. The PRO45B’s key advantage is its heavy-duty brass shank, which offers superior durability and corrosion resistance compared to the plastic shank on the PRO400UK. The PRO45B is the preferred choice for demanding or commercial installations where longevity is paramount. Why is brass better than plastic for the shank?Brass won’t crack under stress, resists corrosion from minerals in the water, and maintains thread integrity through repeated installations. It provides a more rigid, reliable seal and simply outlasts plastic in demanding applications. Is this compatible with my toilet?The PRO45B fits virtually all toilet brands with a 1/2" bottom-entry connection, including Ideal Standard, Armitage Shanks, Roca, Twyford, Duravit, Villeroy & Boch, and many others. Confirm your cistern has a bottom-entry supply before ordering. How quickly will my order be dispatched?If the item shows as in stock, it will be dispatched within 48 hours. If the item is showing as 0 stock, it is ordered in specially for you and will typically be dispatched within 4 working days. Can I order if the item shows as out of stock?Yes — you can still place an order and we’ll source it for you. Contact us at customerservice@bubblegumbathrooms.co.uk or call 01603 381095 if you need a lead time estimate. Is delivery free?This is a small postable item with a one-off small item delivery charge. You can combine multiple small items in one order and pay a single charge.

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The Fluidmaster PRO400UK is the professional plumber’s standard 1/2" bottom entry fill valve — trusted across the UK for its ultra-quiet operation, fast refill, and dependable long-life performance. Height adjustable from 230mm to 355mm, it fits the majority of standard toilet cisterns straight out of the box. An anti-siphon design protects the water supply from contamination, and the valve meets all relevant UK water fittings regulations. ⚠️ Bottom Entry: This is a bottom entry fill valve — the water supply connects from underneath the cistern. If your supply enters from the side, you need a side-entry valve instead. Please check your cistern configuration before ordering. Key Features Height adjustable 230–355mm — fits the majority of standard UK cisterns Ultra-quiet operation — minimal noise and water hammer Fast refill — efficient water delivery for quick turnaround between flushes Anti-siphon design — prevents backflow and protects the drinking water supply 1/2" BSP bottom entry connection — standard UK cistern fitting Professional grade — preferred by plumbers for reliability and longevity Complies with Water Supply (Water Fittings) Regulations Technical Specification Brand: Fluidmaster Model: PRO400UK SKU: K07075 Connection type: Bottom entry Connection size: 1/2" BSP Height range: 230–355mm (adjustable) Anti-siphon: Yes Compliance: Meets UK Water Supply (Water Fittings) Regulations Weight: 0.5 kg Country of Origin: Spain Barcode: 0039961994028 Delivery Information This 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. Browse all items covered by the small delivery charge. Other Fluidmaster Products Fluidmaster PRO45B Professional Brass Shank Fill Valve | 1/2" Bottom Entry | Ultra-Quiet Fluidmaster PRO750UK Professional Dual Flush Valve | Universal Fit Fluidmaster PRO820UK Replacement Dual Flush Button & Rod Frequently Asked Questions What’s the difference between the PRO400UK and PRO45B?Both are 1/2" bottom entry fill valves, but the PRO45B features a heavy-duty brass shank for superior durability, corrosion resistance, and longevity — making it the preferred choice for demanding or commercial installations. The PRO400UK is the standard professional-grade option suitable for most residential and commercial applications. Will this fit my cistern?The PRO400UK adjusts from 230mm to 355mm in height, covering the majority of standard UK toilet cisterns. Confirm your cistern has a 1/2" bottom-entry water supply connection before ordering. If you’re unsure, contact us with your cistern model. What is anti-siphon protection?The anti-siphon design prevents water from being drawn back from the cistern into the main water supply — an important hygiene and regulatory requirement under UK Water Supply (Water Fittings) Regulations. How quickly will my order be dispatched?If the item shows as in stock, it will be dispatched within 48 hours. If the item is showing as 0 stock, it is ordered in specially for you and will typically be dispatched within 4 working days. Can I order if the item shows as out of stock?Yes — you can still place an order and we’ll source it for you. Contact us at customerservice@bubblegumbathrooms.co.uk or call 01603 381095 if you need a lead time estimate. Is delivery free?This is a small postable item with a one-off small item delivery charge. You can combine multiple small items in one order and pay a single charge.

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