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The capped valves are classified as “Pressure accessories” in the sense of the PED Directive 2014/68/EU, Article 2, paragraph 5 and are subject of Article 4, paragraph 1, letter (c), of the same Directive. All the product range is suitable for use with fluids proper to the Group 2, as defined in Article 13, paragraph 1, letter (b), of PED Directive 2014/68/EU, therefore not toxic, not inflammable and not explosive fluids; to this macro Group belongs also the refrigerant fluids listed and classified in A1 Group of Annex E of standard EN 378-1. Examples of refrigerant fluids are:
– HFC R134a, R404A, R407C, R410A, R507;
– Blends HFC/HFO R448A, R449A, R450A, R452A, R513A.
The function of the capped valves is to intercept the fluid flow to allow maintenance operations.
The valve body is made of hot forged brass EN 12420 – CW617N and the spindle is made of galvanized steel. A package consisting of chloroprene rubber seals and aramid fibers gaskets, approved by DIN-DVGW in accordance with DIN 3535, part 6 FA, guarantees an excellent seal to the outside in an area not directly in contact with the fluid, between the spindle and the gland; instead, the seal between the spindle group and the body, in direct contact with the fluid, is ensured by a CR.
Read carefully the installation instructions included in the box. For the CSV..S types is necessary to disassemble the valve, acting on the indicated hexagon, before brazing the body to the system. The brazing shall be done with a low melting point alloy. During this process do not point the flame directly towards the body in order to prevent leaving combustion residues on the sealing seats.