--- product_id: 50402464 title: "McAlpine WM11 75mm Water Seal Adjustable Inlet Tubular Swivel 'P' Trap" brand: "mcalpine" price: "$57.95" currency: USD in_stock: true reviews_count: 9 url: https://www.desertcart.us/products/50402464-mcalpine-wm11-75mm-water-seal-adjustable-inlet-tubular-swivel-p store_origin: US region: United States of America --- # 75mm water seal blocks foul air 1.5" multifit compression outlet Durable polypropylene build McAlpine WM11 75mm Water Seal Adjustable Inlet Tubular Swivel 'P' Trap **Brand:** mcalpine **Price:** $57.95 **Availability:** ✅ In Stock ## Summary > 🚿 Seal the deal with McAlpine – where innovation meets leak-proof peace of mind! ## Quick Answers - **What is this?** McAlpine WM11 75mm Water Seal Adjustable Inlet Tubular Swivel 'P' Trap by mcalpine - **How much does it cost?** $57.95 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/50402464-mcalpine-wm11-75mm-water-seal-adjustable-inlet-tubular-swivel-p) ## Best For - mcalpine enthusiasts ## Why This Product - Trusted mcalpine brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Crafted from tough polypropylene, this trap guarantees long-term durability and maintenance-free use. - • **Appliance-Ready Drainage:** Perfectly engineered for washing machines and dishwashers, handling waste reliably every time. - • **Unbeatable Odour Barrier:** 75mm water seal ensures zero foul air escape, keeping your space fresh and hygienic. - • **Silent Anti-Syphon Option:** Upgrade to the 'V' suffix model for silent, anti-syphon performance that prevents backflow issues. - • **Versatile Pipe Compatibility:** 1.5" multifit compression outlet fits plastic, copper, and lead pipes effortlessly. ## Overview The McAlpine WM11 is a 75mm water seal adjustable inlet tubular swivel 'P' trap designed for reliable drainage and odour prevention. Featuring a 1.5" multifit compression outlet compatible with plastic, copper, and lead pipes, it’s ideal for washing machine and dishwasher waste discharge. Made from durable polypropylene, it offers long-lasting performance and is available in an anti-syphon silentrap variant for enhanced backflow protection. ## Description McAlpine is the UK's quality plumbing parts producer. Known for innovation of plumbing parts provide quality products for trade. A family company driven by people... Our staff are central to everything we do. Even with automation, robotics and tech advancements, we keep a human touch to help drive innovation and finish products. Though you may not know our name, plumbers do. We’ve been indispensable to plumbers and tradespeople from the very beginning. From humble beginnings in Glasgow, Scotland – to millions of homes worldwide, we’ve never given up our commitment to quality. We’re known for innovations that change the landscape of plumbing products. From introducing PVC Shower traps to the UK in 1957 to being the first to introduce Chrome 3 Brassware in 2023, we have a long and storied history of introducing quality products that change the industry’s future. Yes, McAlpine manufactures its core products in the UK. They are proud of their history as the first company in the world to manufacture plastic plumbing products in 1957, and they have a commitment to manufacturing in the UK with high-quality standards. Bath Traps, Waste Flows and connectors come in a range of sizes, shapes, ensuring stylish and effective drainage of wastewater from any bath. 110mm Traps are the perfect, robust solution for connection with 110mm pipes for efficient removal of wastewater. An essential tool for allowing efficient and hygienic drainage of wastewater while blocking odours by filling the bottom of the trap with water. Condensate traps and fittings for connecting condensate discharge and safe drainage, including a range of flexible connectors. Provide cost-effective and reliable drainage solutions. Designed for durability and efficient water flow across various plumbing applications. Allow the drainage of wastewater and discharge from your washing machine, dishwashing machine and more into new or existing drainage installations. McAlpine's Fillers and Wasteflow products offer reliable solutions for controlling water flow in various plumbing applications. Self-Closing Waste Valves can be fitted both horizontally and vertically, and allow water and discharge to flow freely. When should I use an anti-syphon or resealing trap? Generally, the waste pipe or discharge pipe from an appliance is beyond the limitations of an unvented waste pipe. Usually more critical on the basin and bidet Wastes. What is the difference between an anti-syphon trap and a re-sealing trap? A re-sealing is designed to allow air to pass through the water seal under negative pressure but will retain sufficient water. An anti siphon trap has a small mechanical valve which opens under negative pressure. Why does water not run away in my shower? If it is not due to the obvious reason of a blockage caused by a buildup of debris, the problem could be due to back pressure within the discharge pipe. What is the maximum thickness of bath that your bath fillers can be installed on? The maximum thickness of the bath is 20mm and unfortunately, we do not make an extension ferrule to extend that length. We’re known for innovations that change the landscape of plumbing products. From introducing PVC Shower traps to the UK in 1957 to being the first to introduce Chrome 3 Brassware in 2023, we have a long and storied history of introducing quality products that change the industry’s future. ## Features - 75mm water seal prevents foul air escaping from the waste system. - 1.5" multifit compression outlet fits plastic, copper and lead pipe. - Suitable for discharging washing machines and dishwashers, handling appliance waste reliably. - Available as Anti-Syphon (Silentrap) — add suffix "V" to the product code. - Manufactured from durable polypropylene for long-lasting performance. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B00CM87EHU | | Best Sellers Rank | 255,421 in DIY & Tools (See Top 100 in DIY & Tools) 621 in Traps | | Brand | Mcalpine | | Connector Type | Compression | | Customer Reviews | 4.5 4.5 out of 5 stars (598) 4.5 out of 5 stars | | Exterior Finish | Plastic | | Global Trade Identification Number | 05036484006578 | | Included Components | 1 x trap; fittings; | | Inlet Connection Size | 6 Centimeters | | Inlet Connection Type | Flange | | Item Dimensions | 6.4 x 26.6 x 26.6 centimetres | | Item Type Name | McAlpine WM11 Sink Trap with Twin 135 degree Nozzles | | Item Weight | 0.28 Kilograms | | Manufacturer | Mcalpine | | Material | Polypropylene (PP) | | Model Number | WM11 | | Number Of Items | 1 | | Number Of Packs | 1 | | Number Of Pieces | 1 | | Number Of Ports | 2 | | Outlet Connection Size | 1.5 Inches | | Outlet Connection Type | Compression | | Part Number | WM11 | | Size | 75mm | | Thread Size | 1.5 inch | | Unit Count | 1.0 count | | Valve Type | check valve | ## Product Details - **Brand:** Mcalpine - **Exterior finish:** Plastic - **Global Trade Identification Number:** 05036484006578 - **Inlet connection size:** 6 Centimeters - **Inlet connection type:** Compression - **Item dimensions L x W x H:** 6.4 x 26.6 x 26.6 centimetres - **Material:** Copper, Plastic, Polypropylene (PP) - **Number of ports:** 2 - **Outlet connection size:** 1.5 Inches - **Outlet connection type:** Compression ## Images ![McAlpine WM11 75mm Water Seal Adjustable Inlet Tubular Swivel 'P' Trap - Image 1](https://m.media-amazon.com/images/I/51sTuBs0NFL.jpg) ![McAlpine WM11 75mm Water Seal Adjustable Inlet Tubular Swivel 'P' Trap - Image 2](https://m.media-amazon.com/images/I/61gWg6IfW1L.jpg) ## Questions & Answers **Q: When should I use an anti-syphon or resealing trap?** A: Generally, the waste pipe or discharge pipe from an appliance is beyond the limitations of an unvented waste pipe. Usually more critical on the basin and bidet Wastes. **Q: What is the difference between an anti-syphon trap and a re-sealing trap?** A: A re-sealing is designed to allow air to pass through the water seal under negative pressure but will retain sufficient water. An anti siphon trap has a small mechanical valve which opens under negative pressure. **Q: Why does water not run away in my shower?** A: If it is not due to the obvious reason of a blockage caused by a buildup of debris, the problem could be due to back pressure within the discharge pipe. **Q: What is the maximum thickness of bath that your bath fillers can be installed on?** A: The maximum thickness of the bath is 20mm and unfortunately, we do not make an extension ferrule to extend that length. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect for dishwasher & washing machine *by on Reviewed in the United Kingdom 18 January 2024* Moved into a new house which only had pipework under the sink for a single appliance waste pipe. Replaced with this as we have both a dishwasher and a washing machine.Very easy to install, universal fittings so everything fits perfectly. No leaks and no problems. Perfect for the job! ### ⭐⭐⭐⭐⭐ Easy to fit and no leaks *by on Reviewed in the United Kingdom 21 December 2024* We wanted to plumb in our new dishwasher and need an extra water outlet on our sink trap. Decided instead of trying to add pieces to the existing piping to order this. So easy to fit took minutes and replaced the other pipping as why not use all the new fittings. No leaks and good quality fittings, very pleased. ### ⭐⭐⭐⭐⭐ Saved me from disaster! *by on Reviewed in the United Kingdom 3 October 2024* Fantastic product ready assembled, absolutely brilliant and a perfect fit under my kitchen sink! With all rubber washers needed, this is a sturdy and well made product. Can be re configured to your needs and adjoined to others. Highly recommend ## Frequently Bought Together - McAlpine WM11 Sink Trap with Twin 135 Degree Nozzles, White - Solid Brass Nickel Plated Washing Machine Y Piece Connector, Highly Recommended Over Plastic/PVC YPiece - SPARES2GO Universal Cold Water Fill Long 3.5m Inlet Pipe + 2.5m Drain Hose Extension Kit --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/50402464-mcalpine-wm11-75mm-water-seal-adjustable-inlet-tubular-swivel-p](https://www.desertcart.us/products/50402464-mcalpine-wm11-75mm-water-seal-adjustable-inlet-tubular-swivel-p) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-09-15*