Straight unions - pipe / male thread

This category includes direct screwing fittings designed for connecting polyethylene (PE) pipes to internal threaded components. These fittings are commonly used in heating, plumbing, and irrigation systems where a secure, leak-free connection between PE pipe and metal-threaded systems is required. The fittings feature a brass body and clamping ring, ensuring compatibility with pressurized systems operating within a temperature range of -20 °C to +90 °C.

Each fitting is engineered for direct installation into a threaded system, with the PE pipe inserted and clamped securely. The design ensures a tight seal using NBR O-rings and a stop O-ring to prevent over-tightening. These fittings are ideal for use in residential and commercial applications involving water distribution, underfloor heating, and low-pressure irrigation systems.

How to choose

• Select the correct PE pipe size and corresponding thread size (e.g., 20x1/2", 32x1") to match the system requirements.
• Ensure compatibility with internal threaded components such as valves, meters, or manifolds.
• Verify that the operating temperature and pressure conditions align with the PN 16 rating and -20 °C to +90 °C range.

Frequently asked questions

Can these fittings be used with PE-RT pipes?
Yes, provided the PE-RT pipe dimensions match the specified PE pipe size for the fitting.

What is the maximum tightening torque allowed?
Over-tightening should be avoided; the stop O-ring prevents damage by limiting the tightening range.