The Davant MDPE Compression Union Valve x Female is a practical and dependable solution for managing water flow in underground or external plumbing systems. Designed to be used with MDPE (Medium Density Polyethylene) pipework, this valve is essential for isolating water supply quickly and easily—perfect when repair or maintenance work needs to be done without shutting off the entire system.
This union valve features a female threaded end and a compression fitting, allowing for simple connection to MDPE pipe on one side and a threaded fitting on the other. The easy-to-use lever handle allows you to stop or restore water flow with a single turn—ideal for both domestic and commercial applications such as garden supplies, external taps, or rural water networks.
Constructed for durability and long service life, this valve is suitable for cold water systems and can withstand outdoor environments. The compression fitting design means you won’t need specialist tools or heat—just tighten the nuts to create a secure and watertight connection.
Available in several sizes to suit different installations:
20mm x 1/2”
25mm x 3/4”
32mm x 1”
Frequently Asked Questions
What does this valve do?
This valve isolates water flow in an MDPE pipe system. Turning the lever shuts off the water, allowing you to carry out maintenance or repairs without affecting the rest of the supply.
Can it be used above ground?
Yes, although commonly used in below-ground installations, this valve can be used above ground as long as it is protected from prolonged UV exposure or extreme weather conditions.
Is this valve suitable for drinking water systems?
Yes, it's designed for use in domestic and commercial cold water systems, including those supplying drinking water, provided it is installed in accordance with regulations and appropriate fittings are used.
Absolutely. Check availability at your nearest branch during checkout or contact us directly.
Do you offer bulk pricing or trade discounts?
Yes, we offer competitive rates for trade customers and bulk orders. Contact our team for a tailored quote.
What if the product arrives damaged?
Please notify us within 48 hours of delivery. We’ll arrange a prompt replacement or refund as needed.
How fast is the delivery time?
Most items are delivered within 2–5 working days, depending on stock and location. Some products may take longer times.
What is the Return Policy?
We accept most returns within 14 days of delivery, provided the items are unused, in their original packaging, and in resalable condition. Please contact our customer service team to arrange a return or discuss any concerns.
Over 35 Years of Trading
+£3M Stock Value
Best Price Promise
10 Branches Across London & South East
Choosing a selection results in a full page refresh.