... non-concretionary, and have no danger of explosion and do not erode steel and copper alloy. 2.Heating ,air-conditioning ... :Cu-alloy, Radial and axial Φ40: G 1/8 B (male), 14 mm flats Φ50 or Φ63: G ... 14 mm flats Φ80,Φ100 or Φ160: G 1/2 B (male), 22 mm flats Pressure element:Cu-alloy, ≤ 60 ... new customers to visit the company; we will cooperate with you with the high-quality products, the best service and ...