Expansion Vessel Connection Reflex SU for Diaphragm Vessel 3/4" – Reflex 7613000

Reflex SU connection for diaphragm (expansion) vessels with 3/4" thread provides a secure mechanical interface between a diaphragm expansion tank and the piping of heating or hot-water systems. The Reflex 7613000 connection is designed to fit standard 3/4" ports and to create a sealed attachment that maintains system pressure and prevents leaks. It is intended for use with boilers, central heating circuits and domestic hot-water installations where a compact, reliable vessel connection is required.

Advantages

The Reflex SU connection offers a robust threaded joint engineered for tight sealing and corrosion resistance appropriate for heating systems. Its compact design simplifies installation in confined spaces and reduces the need for additional adapters. The component is compatible with common diaphragm vessels and provides a stable mechanical link that helps maintain system integrity and operational safety.

Suitable for

• Connection of diaphragm expansion vessels to boiler and central heating systems
• Domestic hot-water circulation systems requiring a 3/4" vessel port
• Replacement or retrofit of existing vessel connections with standard threaded fittings

Key specifications

• Thread size: 3/4" suitable for standard vessel ports
• Type: connection fitting for diaphragm (expansion) vessel
• Application: heating systems, boilers, domestic hot-water installations
• Function: provides sealed mechanical link between vessel and piping
• Design: compact form factor for space-limited installations

How to use

Shut down the heating or hot-water system and relieve system pressure before installing or replacing the connection. Thread the Reflex SU connection into the vessel’s 3/4" port using appropriate thread sealant or sealing tape as recommended for the system. Tighten to the torque appropriate for the vessel and fitting material to ensure a leak-free joint. Reconnect piping, restore system pressure, and inspect the joint for leaks during initial system fill and first heat cycle.

Usage recommendations

For safe and reliable operation, use the Reflex SU connection only with compatible diaphragm vessels and follow manufacturer guidance for thread sealing and torque values. Verify material compatibility with system fluids and perform a pressure test after installation. If uncertain about installation procedures or system requirements, consult a qualified heating technician.