Kosan Industries Pvt. Ltd. Supplies CNG Filter Valve with Dual Outlet Connection. Kosan Industries Pvt. Ltd. Is an ISO 9001:2000 accredited company. Kosan Industries Pvt. Ltd. Is the manufacturer of valves and regulators of LPG in India. CNG Filter Valve with Dual Outlet Connection is provided with safety [rupture disc having fusible alloys backing]. CNG Filter Valve with Dual Outlet Connection is operated by ball type knob.