Erg, Sr series pressure regulator is used on gas line for the purpose of lowering incoming pressure to desired outlet pressure. It works well for applicable to both enterprise and residential usage where can be directly installed to gas meters with high operational reliability and accurate outlet pressure accuracy. Simple installation procedure. Direction of the line can be inline or angle. Due to different inlet and outlet connection range, Erg, Sr series is suitable for use along with pipe diameter from dn20 to dn50 with different thread standards along with bsp, Bspt, Npt, May serve, Npp. Also as added to flange connection., The Regulators are produced following the guidelines of the PED directive 2014/68/EU the functional tests are performed according to en334. Features for medium pressure domestic or commercial second group gas lines. Optional metallic mesh filter for easy change and guarantees longer operation life of regulator. Outlet pressure tolerance is, %10 ac10 up,, %5 ac5 lock, Up pressure tolerance is, %20 sg20 A maximum of 100 mbar outlet pressure, More than 100 mbar outlet pressure sg20 and sg10 possible. Design loose nut or body thread or flanged connectionfilterventilation consoleoutlet pressure test pointintegrated security valves