Castel threaded brass fittings are designed to be installed on commercial refrigerating systems and on civil and industrial air conditioning plants. They can be used with refrigerants belonging to the Group (R22, HFC, HFO and HFC/HFO blends) and with refrigerants belonging to Group 1 (HC) up to DN25.
APPLICATIONS
The fittings illustrated in this chapter are designed for installation on commercial refrigeration systems and on civil and industrial air conditioning plants that use the following refrigerant fluids:
• HCFC (R22)
• HFC (R134a, R404A, R407C, R410A, or R507)
• HFO and HFO/HFC mixtures (R1234ze, R448A, R449A, R450A, and R452A)
• R744 Subcritical and transcritical, limited to components with PS = 120 bar
Belonging to Group 2, as defined in Article 13, Chapter 1, Point (b) of Directive 2014/68/EU, with reference to EC Regulation No. 1272/2008. Furthermore, fittings up to DN 25,
hey can also be installed on systems that use the following refrigeration fluids:
• HFC (R32)
• HFO (R1234yf)
• HC (R290, R600, or R600a)
belonging to Group 1, as defined in Article 13, Chapter 1, Point (a) of Directive 2014/68/EU, with reference to EC Regulation No. 1272/2008.
For specific applications with refrigerant fluids not listed above, please contact Castel Technical Department.
OPERATION The sealing system between the end of a male connection and a union in series 7010, 7020 and 7030 requires a special flaring of the end of copper pipe, the so-called flared connection.
The sealing system between the end of a male connection and a Flare-ODS adapter allows avoiding flaring the end of the copper pipe (national laws of some European countries do not accept this operation) as the end of the copper pipe is brazed into the adapter joint. We wish to remind our customers that perfect seal of the male connector / FlareODS adapter can only be ensured using the appropriate tapered gasket, 7580, supplied with the adapter.
The flange joints in series 7630 consist of two brass bushes for brazing to the copper pipes. Once this connection has been made, the joint seal is ensured by the compression of a gasket between the bushes. This compression occurs when the four flange screws are tightened.
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