--- product_id: 53221477 title: "100L Pressure Tank Vessel Expansion for Domestic Waterworks Pump EPDM-Membrane Drinking Water" brand: "wiltec" price: "VT438762" currency: VUV in_stock: true reviews_count: 8 category: "Wil Tec" url: https://www.desertcart.vu/products/53221477-100l-pressure-tank-vessel-expansion-for-domestic-waterworks-pump-epdm store_origin: VU region: Vanuatu --- # 100L capacity for ample water buffering Easily replaceable EPDM membrane 5.4 bar max pressure rating 100L Pressure Tank Vessel Expansion for Domestic Waterworks Pump EPDM-Membrane Drinking Water **Brand:** wiltec **Price:** VT438762 **Availability:** βœ… In Stock ## Summary > πŸ’§ Elevate your water system with pressure-perfect precision! ## Quick Answers - **What is this?** 100L Pressure Tank Vessel Expansion for Domestic Waterworks Pump EPDM-Membrane Drinking Water by wiltec - **How much does it cost?** VT438762 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/53221477-100l-pressure-tank-vessel-expansion-for-domestic-waterworks-pump-epdm) ## Best For - wiltec enthusiasts ## Why This Product - Trusted wiltec brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Robust 100L Capacity:** Generous volume to stabilize your domestic water pressure seamlessly. - β€’ **Premium EPDM Membrane:** Safe for drinking water and designed for quick, hassle-free replacement to keep your system fresh. - β€’ **High-Pressure Resilience:** Engineered to withstand up to 5.4 bar, ensuring reliable performance under demanding conditions. - β€’ **Integrated Schrader Valve:** Effortlessly adjust counter-pressure for optimal pump efficiency and longevity. - β€’ **Durable Steel Construction:** Built with quality steel sheets welded to UNI-EN standards for lasting durability and peace of mind. ## Overview The WilTec 100L Pressure Tank Vessel is a high-quality expansion tank designed for domestic waterworks, solar, and garden pump systems. Featuring a durable steel body and a heat-resistant, easily replaceable EPDM membrane safe for drinking water, it supports up to 5.4 bar pressure and includes an integrated Schrader valve for precise pressure regulation. Ideal for maintaining consistent water pressure and protecting your pump, this vessel combines reliability with user-friendly maintenance. ## Description Replacement 100-litre pressure vessel for use in sanitary cold/hot water systems, suitable for nearly all domestic waterworks, solar and pressure maintenance systems, and garden pumps. This pressure vessel (type 100L pressure vessel) will be delivered including the EPDM rubber membrane. The vessel is designed for a maximum pressure of 5.4 bar and will be delivered for a vertical positioning. The vessel is checked for tightness with up to 5.4 bar water pressure by the producer. It has a 1 inch (32.89–33.25 mm) pump connector. The pressure vessel additionally has an integrated valve (Schrader valve/car tyre valve) to regulate the counter-pressure in the space between tank and membrane. These vessels are made of quality-steel sheets and are welded according to UNI-EN standards and equipped with a heat and ageing resistant EPDM rubber membrane. The membrane can easily be exchanged. About the pre-charge in the pressurised vessel: The pre-charge pressure should be set approximately 0.1–0.2 bar lower than the switch-on pressure of the pump and has to be checked regularly. Any failure of observance may cause damage on the EPDM rubber diaphragm of the pressure vessel. A more accurate calculation results from the formula β€œswitch-on pressure of the pump x 0.9.” Example: Switch-on pressure of the pressure switch of the domestic waterworks is set to 1.5 bar: 1.5 bar x 0.9 = 1.35 bar. This means that the pressure can be set from 1.3–1.4 bar. Important: The pressure of the vessel should only be inflated or deflated after the pressure to the water system has been released beforehand. Attention: It is necessary to have released the air and water pressure before opening of the pressure vessel! Review: Vessel - Excellent price and good quality Review: Pump for private water supply - Replaced a smaller model but working perfectly. ## Features - Advantages of the expansion vessels - Pressue vessels can be used for all types of water. - The water only comes into contact with the membrane. - Easily replace the membrane, EPDM is suitable for drinking water. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004VLLO4K | | Best Sellers Rank | 209,805 in DIY & Tools ( See Top 100 in DIY & Tools ) 480 in Water Pumps & Accessories | | Brand | WilTec | | Brand Name | WilTec | | Colour | 100 L | | Country Of Origin | China | | Customer Reviews | 4.3 out of 5 stars 3,710 Reviews | | Global Trade Identification Number | 04250390813155 | | Item Dimensions L x W x H | 70L x 45W x 47H centimetres | | Item Weight | 11.4 Kilograms | | Item weight | 11.4 Kilograms | | Manufacturer | WilTec | | Material | Steel, Ethylene Propylene Diene Monomer | | Material Type | Steel, Ethylene Propylene Diene Monomer | | Product dimensions | 70L x 45W x 47H centimetres | | Unit Count | 1.0 Count | ## Product Details - **Brand:** WilTec - **Colour:** 100 L - **Item weight:** 11.4 Kilograms - **Material:** Steel, Ethylene Propylene Diene Monomer - **Product dimensions:** 70L x 45W x 47H centimetres ## Images ![100L Pressure Tank Vessel Expansion for Domestic Waterworks Pump EPDM-Membrane Drinking Water - Image 1](https://m.media-amazon.com/images/I/61yegkIJ5QL.jpg) ## Available Options This product comes in different **Color, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Vessel *by C***L on 22 October 2025* Excellent price and good quality ### ⭐⭐⭐⭐⭐ Pump for private water supply *by A***R on 6 June 2025* Replaced a smaller model but working perfectly. ### ⭐⭐⭐⭐⭐ Expansion tank *by R***E on 28 June 2025* Well made does the job ## Frequently Bought Together - 100L Pressure Tank Vessel Expansion for Domestic Waterworks Pump EPDM-Membrane Drinking Water - 20-24L Replacement Membrane Pressure Tank Vessel Expansion for Domestic Waterworks - 5-Port Brass Splitter Manifold Distributor 1inch 1/4" Pressure Vessel Expansion --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/53221477-100l-pressure-tank-vessel-expansion-for-domestic-waterworks-pump-epdm](https://www.desertcart.vu/products/53221477-100l-pressure-tank-vessel-expansion-for-domestic-waterworks-pump-epdm) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-12*