Kosan Industries Pvt. Ltd. Supplies Manually Operated LPG Cylinder Valve. Kosan Industries Pvt. Ltd. Is an ISO 9001:2000 certified company. Kosan Industries Pvt. Ltd. Is the manufacturer of valves and regulators of LPG in India. Manually Operated LPG Cylinder Valve is a two pin type valve without safety device. Manually Operated LPG Cylinder Valve is used for cylinders in inverted condition valves with dip-tube or flow limiters which are available. It is also available in ring type [non repairable] type.