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How to connect the refrigeration pipes

Cooling pipe using seamless steel tube should be used as welding, in addition to use when connected to the equipment, valves flanged or threaded connection.

gas welding using diameter less than 5omm, diameter greater than 5omm using welding. Pipe welding is commonly used in refrigerator, only when necessary in terms of installation and maintenance, flanged or threaded connection is used. Using convex surface flat welding flange square flange or kidney-shaped flange, when flange connection, gaskets with a thickness of 1 ~ 3mm oil rubber asbestos, and modulation of graphite coated with oil. When threaded connection, you should use gasoline or kerosene to clean the oil on the threads, and then coated with glycerol to reconcile gluten feed or Teflon tape as a seal packing, prohibited the use of lead as flax oil and seal packing.

Freon refrigeration pipe diameter is less than 25 mm with copper pipe, there are several connection methods.
(1) the finished copper pieces. the interface form for the socket type, brazing connection.
(2) socket connected by copper brazing, the annealing should first pipe end, and then heating the mold with the socket, the socket diameter should be larger than the outer diameter of the insertion tube 0.25 ~ 0.5mm, the socket valid depth can be equal to the pipe diameter, mounting direction Looking medium flow.
(3) flange connection. According to the design requirements and the specific circumstances, pipeline installation works can be used for copper and copper alloy pipe flange loose flange, welding ring loose flange and welded flange, welded flange connection form.

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