--- product_id: 55160835 title: "12 Litre Potable Expansion Vessel with 3/4\" Connection" brand: "witpoce" price: "€ 110.05" currency: EUR in_stock: true reviews_count: 8 category: "Witpoce" url: https://www.desertcart.sk/products/55160835-12-litre-potable-expansion-vessel-with-3-4-connection store_origin: SK region: Slovakia --- # 12L capacity - optimal mid-range volume Replaceable EPDM membrane - easy maintenance Epoxy coated steel - corrosion resistant 12 Litre Potable Expansion Vessel with 3/4" Connection **Brand:** witpoce **Price:** € 110.05 **Availability:** ✅ In Stock ## Summary > 💧 Upgrade your water system — stop the hammer, start the calm! ## Quick Answers - **What is this?** 12 Litre Potable Expansion Vessel with 3/4" Connection by witpoce - **How much does it cost?** € 110.05 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/55160835-12-litre-potable-expansion-vessel-with-3-4-connection) ## Best For - witpoce enthusiasts ## Why This Product - Trusted witpoce brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Maintenance:** Interchangeable EPDM membrane and bolted stainless steel flange simplify servicing and upgrades. - • **Peace of Mind Warranty:** Backed by a 2-year manufacturing warranty and factory-tested quality assurance. - • **Customizable Pressure Settings:** Pre-charged at 2.5 bar with adjustable pressure cap for tailored system balance. - • **Reliable Water-Hammer Protection:** Eliminate disruptive knocks with a proven 12L vessel designed to cushion hydraulic shocks. - • **Durable & Corrosion-Resistant Build:** White epoxy-coated steel and galvanized flange ensure long-lasting, rust-free performance. ## Overview The 12 Litre Potable Expansion Vessel by Reliance Water Controls is engineered for potable water systems, featuring a robust epoxy-coated steel container, replaceable EPDM membrane, and galvanized steel flange. Operating safely up to 8 bar pressure and pre-charged at 2.5 bar, it effectively prevents water-hammer noise and pressure surges. Factory tested and backed by a 2-year warranty, this vessel offers durable, customizable, and maintenance-friendly performance for modern plumbing setups. ## Description 12 Litre Expansion Vessel for Potable Water Applications from Inta (code: TRPVES12) The Trade Tec 12 Litre Potable Vessel provides a mid-range capacity for potable water systems, offering reliable and safe performance. It is equipped with an interchangeable membrane and a sturdy powder-coated exterior. The vessel includes a galvanized steel flange and a welded center seam for added strength. It operates under a maximum working pressure of 8 bar and has a pre-charge pressure of 2.5 bar. This product is fully factory tested to ensure quality and an optional mounting bracket is available for easy installation. It comes with a 2-year manufacturing warranty. Capacity: 12 Litres Height: 310 mm Diameter: 270 mm Max Working Pressure: 8 Bar Max Working Temperature: 99°C Max Membrane Temperature: 70°C Pre Charge: 2.5 Bar Features: Interchangeable membrane, powder-coated finish, factory tested, galvanized steel flange, welded center seam, 2-year warranty. Review: The only effective cure for water-hammer! - Pre-set at 3 Bar pressure, which is my average mains water pressure, (you can adjust pressure under a plastic screw cap on top) this vessel has sorted my recent water-hammer problems which were driving me nuts and began unexpectedly without any additions or modifications to my plumbing... The only initial solution to the water-hammer problem was to allow a tap in the house to run very slightly. I even considered connecting up an auto-flush cistern that allowed a reduced but constant water flow to relieve the pressure but this was not really a sensible option long term. I had previously bought and fitted 3 small water-hammer arrestors to try to solve the knocking (internal plunger/spring operated devices) but these had no effect whatsoever on the problem... (£28 a time... 'not happy...) Having fitted this pressure vessel near my mains inlet in the garage, simply a "spur" off the mains, this immediately stopped the water-hammer knocking when taps, solenoids or toilets were turned off/stopped the water flow. The second photo shows two inline isolating valves under the vessel, one allows the unit to be fitted without turning off the mains and the second directly under the vessel stops you getting soaked if you have to remove it! ...more importantly this valve is shown almost closed as this is adequate to allow the passage of water into the vessel to cushion the hydraulic shock or water-hammer effect but importantly it prevents what I can only imagine is a periodic "release of pressure" causing slight knocking that occurred regularly and noticeably when I was trying to get to sleep! (no taps or appliances were running at the time) Initially it probably happened during the day but I didn't notice it. It may be that I also need to adjust the expansion vessel pressure but this partial closure of the valve seems to do the trick. I am sure different plumbing configurations in houses will produce different problems in addition to the mains pressure varying from time to time so there's a bit of trial and error in getting it right. No there isn't a bracket on this version but it isn't difficult to make one rather than pay the extra cost... unless someone else is paying! Review: Quality product - Well made product from great seller. ## Features - Capacity: 12 Litre - White Epoxy Coated Steel Container - Replaceable EPDM Membrane - Bolted Stainless Steel Flange - Maximum Pressure: 10 Bar ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00QVM5YD4 | | Best Sellers Rank | 199,193 in DIY & Tools ( See Top 100 in DIY & Tools ) 94 in Bathroom Vessels | | Brand | WITPOCE | | Colour | White | | Customer Reviews | 4.3 4.3 out of 5 stars (79) | | Finish | Epoxy Coated | | Installation Type | Wall Mount" or "Cabinet | | Item Dimensions D x W x H | 31D x 27W x 31H centimetres | | Manufacturer | Reliance Water Controls | | Material | Stainless Steel | | Product Care Instructions | Water | | Shape | Other | | Size | Depth: 310 mm, Width: 270 mm | | UPC | 708747442083 | ## Product Details - **Brand:** WITPOCE - **Colour:** White - **Material:** Stainless Steel - **Product dimensions:** 31D x 27W x 31H centimetres - **Size:** Depth: 310 mm, Width: 270 mm ## Images ![12 Litre Potable Expansion Vessel with 3/4" Connection - Image 1](https://m.media-amazon.com/images/I/51++0qRqcEL.jpg) ## Questions & Answers **Q: Can it be used for maintaining pressure in mains water supply system to replace my pressure accumulator (as opposed to for thermal expansion)? Thanks.** A: No that wouldn't work. **Q: I currently have a zilmet 110-ultra-pro 12 ltr which i believe needs replacing. would this model replace it or do i need the same brand?** A: You can use any brand with Expansion Vessels. Their dimensions can differ though, so please check you have enough space to cater for the new vessel. **Q: Does the vessel come with a bracket? If not, will a standard bracket work?** A: Hi there,No the vessel doesn't come with a bracket but you can find one here:http://www.amazon.co.uk/Expansion-Vessel-Bracket-sizes-Litres/dp/B00QVM4PAM/ref=sr_1_3?ie=UTF8&qid=1431674651&sr=8-3&keywords=expansion+vessel+bracket **Q: What are the dimensions of the container?** A: Hello TillVessel is Height = 295mm Diameter = 280mmBest regardsSparesweb ## Customer Reviews ### ⭐⭐⭐⭐⭐ The only effective cure for water-hammer! *by N***I on 5 January 2021* Pre-set at 3 Bar pressure, which is my average mains water pressure, (you can adjust pressure under a plastic screw cap on top) this vessel has sorted my recent water-hammer problems which were driving me nuts and began unexpectedly without any additions or modifications to my plumbing... The only initial solution to the water-hammer problem was to allow a tap in the house to run very slightly. I even considered connecting up an auto-flush cistern that allowed a reduced but constant water flow to relieve the pressure but this was not really a sensible option long term. I had previously bought and fitted 3 small water-hammer arrestors to try to solve the knocking (internal plunger/spring operated devices) but these had no effect whatsoever on the problem... (£28 a time... 'not happy...) Having fitted this pressure vessel near my mains inlet in the garage, simply a "spur" off the mains, this immediately stopped the water-hammer knocking when taps, solenoids or toilets were turned off/stopped the water flow. The second photo shows two inline isolating valves under the vessel, one allows the unit to be fitted without turning off the mains and the second directly under the vessel stops you getting soaked if you have to remove it! ...more importantly this valve is shown almost closed as this is adequate to allow the passage of water into the vessel to cushion the hydraulic shock or water-hammer effect but importantly it prevents what I can only imagine is a periodic "release of pressure" causing slight knocking that occurred regularly and noticeably when I was trying to get to sleep! (no taps or appliances were running at the time) Initially it probably happened during the day but I didn't notice it. It may be that I also need to adjust the expansion vessel pressure but this partial closure of the valve seems to do the trick. I am sure different plumbing configurations in houses will produce different problems in addition to the mains pressure varying from time to time so there's a bit of trial and error in getting it right. No there isn't a bracket on this version but it isn't difficult to make one rather than pay the extra cost... unless someone else is paying! ### ⭐⭐⭐⭐⭐ Quality product *by C***N on 30 October 2022* Well made product from great seller. ### ⭐⭐⭐⭐⭐ Works *by R***. on 15 June 2022* Replacement for a branded vessels 4 times the price. Fits exactly the same and dies the same job ## Frequently Bought Together - Aquasystem 12 Litre Potable Expansion Vessel with 3/4" Connection - Tesy Hot Water Cylinder (80 Litre) --- ## 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.sk/products/55160835-12-litre-potable-expansion-vessel-with-3-4-connection](https://www.desertcart.sk/products/55160835-12-litre-potable-expansion-vessel-with-3-4-connection) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-05-20*