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The ball valves are classified as “Pressure accessories” in the sense of the PED Directive2014/68/EU, Article 2, paragraph 5 and are subject to Article 4, paragraph 1, letter (c), of the same Directive.
All the products range is suitable for use with fluids proper to the Group 1 and 2, as defined in Article 13, paragraph 1, letter (a) and letter (b), of PED Directive 2014/68/EU with reference to Regulation (EC) n.1272/2008, in accordance with safety classification A1, A2L and A3 in Annex E of standard EN 378-1:2016. Examples of A1 and A2L refrigerant fluids are:
– HFC R32, R134a, R404A, R407C, R410A, R507;
– HFO R1234yf, R1234ze and blends HFC/HFO R448A, R449A, R450A, R452A, R452B, R445A, R454B, R454C, R513A.
Examples of A3 refrigerant fluids are (HC hydrocarbon):
– R290, R600, R600a, R1270;
For any different application is suggested to contact directly the technical department.
The function of the bidirectional ball valves is to intercept the fluid, acting the spindle, in order to stop or throttle the flow of refrigerant to a part of the system. The entire range of three-way ball valves Plus series can be operated by rotating servomotors, combining the special adapters (AMBV..) proposed in the relative paragraph of this catalogue; this solution allows remote control of the opening/closing of the valve.
The body and the chrome plated sphere are manufactured in hot-forged brass EN 12420 – CW617N and the solder connections are in copper tube EN 12735-1 – Cu-DHP. The range of the ball valves with charge connection integrated into the body (shape A) has been expanded: this solution not only reduces the welds present on the product and which are possible loss points, it guarantees a more solid anchorage for the system’s refill accessories. The TIG welding of the body and the O-ring in HNBR compound assembled on the spindle, assure the perfect seal of the valves, while the special modified PTFE gaskets around the ball, ensures low working torque. The design of ball valves permits the bi-directional flow of the refrigerant, the equilibrium of internal pressures when the valve is closed and prevents any risk of ejection of galvanized steel spindle. The groove is made of stainless steel.
The brazing of the valves to the system shall be done with a low melting point alloy. During this process do not point the flame directly towards the body keeping it cooled in order to avoid compromising the seal of the gaskets.