The Types 1098-EGR and 1098H-EGR regulators provide economical and accurate pressure control in a wide variety of applications:natural gas distribution systems;fuel gas supply to industrial boilers, furnaces, ovens and mixers; and large commercial/industrial establishments such as shopping centers and schools. They are also used in plant air service and in liquid service where a slow stroking time (approximately 30 to 90 seconds) is desired on both opening and closing the main valve.