Manifolds are manufactured of brass compliant to the European standard ΕΝ 12167. The product has low hardness so that it may be more resilient to mechanical stressing. Manifolds are produced in four different types.
1) With regulation valves, for plumbing and heating installations.
2) With balancing valves, with blue and red markings for use in plumbing and heating installations.
3) With thermoelectric actuator valves for heating and underfloor heating installations. The manifold is equipped with a special valve, which serves for the initial testing of the network if thermoelectric actuators are to be used.
4) With flow meters for applications in underfloor heating installations.
The manifolds with balancing and regulation valves are available with male 24x19 threading. Manifolds with thermoelectric actuator valves and flow meters are manufactured with 3/4 male threading (Eurocone).
The manifold axes are made watertight by use of two elastic rings on their shaft and one at the base of the valve. The elastic rings are made of EPDM, a material resistant to high temperatures that maintains its elasticity over the course of time. Moreover, the rings enable a conical metal-to-metal watertight connection at the base.
The manifolds are available with 2 to 10 ports, making installation quick, easy and professional.
A major advantage is isolation of circuits (loops), high flow capacity and long lifespan of check valves.
Regulating bar-type manifolds are recommended for plumbing installations, as they achieve increased flow, which in turn compensates for decreased dimensions owing to buildup of salt residues. Moreover, manifolds with check valves should be used instead of the usual mini valves; the latter are soon rendered inoperative due to salt buildup and increase the risk of pressure surge when opened.
For heating installations it is recommended that the individual water connections are 3/4 (Eurocone) for better operation of the circuits. In addition, the manifold should be bar-type, regulating, without interconnections. The two aforementioned points are a prerequisite for heating installations in most EU countries.
