The 3.500 CPLG .156X4 A27 A/C from Dresser Industries is a coupling designed for efficient fluid transfer in air conditioning systems. With a size of 3.500 inches and a .156X4 specification, this coupling ensures a secure connection between pipes. Made from high-quality materials, it is built to withstand varying pressures and temperatures, making it suitable for demanding applications. This coupling complies with industry standards, ensuring compatibility with a wide range of systems. Ideal for HVAC professionals, it provides a reliable solution for connecting components in air conditioning setups.