The two stage self-driven pressure regulators series GSR are designed for use in a wide range of both domestic and industrial applications and can also be mounted in individual domestic gas systems and meters. The regulator can be employed with natural gas , manufactured gas ,air propane and other gases are not corrosive. Their main features include compact size for space saving , high-quality materials , high regulation accuracy , easy setting and maximum reliability of safety devices. The regulators can also be installed both outdoors and indoor applications with safely. The internal relief valve vent can be convoyed outside in case of installation with closed rooms or for underground plants. Thanks to the concept of double regulation stage, it is possible to achieve a high accuracy; high operating reliability. Simple installation procedure. The regulator are manufactured according to TS 10624.