Brass union fittings set for valves Afriso ATM 1" x 1" with seals and two check valves

Set of brass union fittings for Afriso ATM 1" x 1" valves, supplied with seals and two integrated check valves. This kit provides threaded union connectors designed to match the valve dimensions and offers a compact solution for making removable connections in heating, plumbing and hydronic installations. The included seals ensure a tight joint while the built-in check valves reduce the risk of backflow in pipeline circuits.

Advantages

The brass construction delivers corrosion resistance and mechanical strength appropriate for domestic and light commercial systems. Threaded unions simplify assembly and disassembly for maintenance without the need to disturb connected pipework. Integrated check valves offer built-in backflow protection, eliminating the need for separate components and reducing installation time. Supplied seals are sized to ensure reliable leak prevention under typical operating pressures for heating and plumbing networks.

Suitable for

• Installation and replacement on Afriso ATM 1" x 1" valves in heating systems
• Hydronic circuit sections where removable connections are required
• Domestic and commercial plumbing systems requiring compact backflow prevention
• Maintenance points that need quick disassembly without cutting pipes

Key specifications

• Material: brass union fittings with elastomer seals
• Valve connection size compatibility: 1" x 1"
• Includes: two threaded unions, sealing gaskets, two integrated check valves
• Function: removable union connection with integrated non-return valves
• Typical applications: heating, plumbing and hydronic systems

How to use

Thread the union fittings onto the mating threads of the Afriso ATM 1" x 1" valve and the adjoining pipe or fitting, ensuring the supplied seals sit correctly in the sealing seats before final tightening. Hand-tighten first, then apply appropriate torque with a wrench to achieve a secure, leak-free connection without over-tightening. Verify the orientation of the integrated check valves so that flow direction is correct for the intended circuit. After installation, pressurize the system and inspect the joints for leaks; retighten if necessary within manufacturer-recommended torque limits.

Usage recommendations

Use compatible seal materials and follow the Afriso valve installation guidance for temperature and pressure limits. Avoid excessive mechanical stress on the unions by supporting adjacent pipework, and perform periodic inspections to confirm seal integrity and proper check valve function.