Supreme 25mm x 1/2 Female Threaded 90 Elbow

Supreme 25mm x 1/2″ Female Threaded 90° Compression Elbow

Create clean, watertight right-angle corners in your water system with the trade-quality Supreme 25mm x 1/2 Female Threaded 90 Elbow. Perfect for transitioning between standard 25mm MDPE pipework and male-threaded components, it guarantees a leak-free seal without the need for specialist tools.

Making sharp directional turns in water networks can cause kinks and restrict flow if not handled properly. The genuine Supreme compression elbow provides a rigid, high-flow solution for tight radius cornering. It seamlessly adapts a 25mm external diameter blue or black water pipe into a standard 1/2 inch female BSP thread. This makes it an ideal fitting for connecting underground mains water supplies directly to threaded pop-up sprinklers, manifold setups, drain-off points, or non-return valves.

Key Performance Benefits & Product Attributes:

• Trade-Approved Mechanical Grip: Built with a heavy-duty split-ring captive nut assembly that locks onto the MDPE pipe, preventing any blowouts under sudden mains water surges.
• Engineered for Tough Environments: Moulded from high-performance UV-stabilised polypropylene, making it fully immune to mineral scaling, chemical fertilisers, and harsh frost cycles.
• Seamless Threaded Transition: Precision-moulded 1/2″ Female BSP thread ensures a secure, cross-thread resistant connection when screwing in brass or plastic male components.
• Simple No-Tool Tightening: Can be reliably tightened by hand for standard irrigation layouts, or cinched down with a mechanical fitting wrench for high-pressure drinking water lines.
• PN16 Pressure Classification: Rated to withstand operating pressures up to 16 bar, making it safe for both agricultural field installations and domestic mains plumbing networks.

Typical Setup Locations:

This 90-degree mechanical connector is commonly used in underground valve boxes, perimeter hedge lines, and allotment tap connections. It is perfectly compatible with both medium-density polyethylene (MDPE) pipework and thick-walled LDPE distribution tubes commonly used throughout the UK irrigation and plumbing sectors.

Technical Dimensions & Specifications:

• Brand: Supreme Fittings
• Fitting Style: 90-Degree Compression Elbow
• Pipe Joint Inlet: 25mm Compression (Mechanical)
• Threaded Outlet: 1/2″ Female BSP
• Pressure Rating: PN16 (Up to 16 bar / 232 PSI)
• Primary Material: Industrial Polypropylene (PP-B)

Frequently Asked Questions & Support

How do I ensure a leak-free connection on the 1/2 inch female thread?

To guarantee a completely watertight seal on the threaded side of the Supreme 25mm x 1/2 Female Threaded 90 Elbow, you should always apply professional PTFE tape. Wrap the tape around the matching male thread roughly 5 to 6 times in a clockwise direction before screwing it into the elbow socket. Avoid over-tightening plastic threads with metal tools to prevent stripping or splitting the polymer housing.

Do I need to disassemble the compression fitting completely to install it?

No, you do not need to take the entire blue nut assembly apart. Supreme compression fittings are engineered for quick installation. Simply slacken the blue captive nut by a few turns, check that the internal O-ring and split-ring are properly seated, push the 25mm MDPE pipe firmly into the socket until it hits the pipe stop, and then hand-tighten the nut down before giving it a final turn with a fitting wrench.

Is this Supreme 90-degree elbow safe for drinking water lines?

Yes, this mechanical compression fitting is manufactured using premium, high-grade virgin polypropylene materials that comply with international standards for potable water delivery. It is completely non-toxic, chemical resistant, and will not leach any taints or odours into your drinking water supply, making it excellent for both domestic utility connections and commercial farm systems.

What is the difference between PN16 and standard plumbing fittings?

A PN16 pressure rating means this specific elbow can safely handle continuous operating pressures up to 16 bar (approximately 232 PSI) at room temperature. Most standard domestic plumbing lines only operate between 2 to 5 bar. This high industrial rating ensures a massive safety margin against sudden thermal expansion, mains water hammer spikes, and heavy agricultural surges.

Installation Advice: For a flawlessly watertight threaded connection, apply professional PTFE tape around the male thread before screwing it into the 1/2″ female elbow socket. Do not over-tighten plastic threads to avoid stripping.