【Brass Material】: The service access valve selected high quality brass material, sturdy and durable, wear resistant and corrosion resistant, and have a long service life 【Easy Installation】: The access valve cover adopts a knurled design, which is easy to install and disassemble, and is suitable for adding fluorine 【Exquisite Craftsmanship】: Small size service access valve, exquisite workmanship, stable performance, suitable for R22 R12 R134 refrigerant 【Multi Purpose】: The service access valve is widely used in various parts of freezing, refrigeration, and air conditioning equipment, an essential accessory for HVAC systems 【Sealing Cover】: Air conditioning filling valve, with sealing cover, double sealing to ensure no leakage, stable and to use, Manufacturer: cersalt