This series pressure-reducing regulators are suitable for most gases and liquids. The RS series regulators feature various poppet designs, a choice of sensing types (diaphragm or piston), and seat and seal materials to accommodate a variety of pressure, temperature, and flow conditions. This series regulators are available in sizes from 1/4 to 2 in. with a choice of threaded or flange end connections. The RSH series regulators are a high-pressure version of the RS series regulators, and the LRS and LPRS series are lowpressure, high-accuracy versions of the RS series regulators. The RS series regulators are available with many options, incluENg a variety of gauge connection configurations