American standard quick couplings, compatible with international standard structure, made of copper, this series of quick connectors have three sizes of throughways, generally divided into 200 Series, 300 series, 500 series; Quick-release couplings come in two types: open flow and with valve, The open flow-style couplings have seals that can be replaced,The standard thread of the male water nipple is generally used in the British PT standard and American NPT standard, quick couplings are mainly used in heating or cooling systems, the pressure resistance can reach 15Bar, the O-ring in our quick connectors is made of fluorine rubber, the highest temperature can reach 200°C.
