Heavy-Duty Rotary Air-Lock Valve is used to transfer material inline or against the flow. The Air-Lock Valve can efficiently handle pneumatic conveying of bulk solids and other material. The Air-Lock Valve has closed clearance to avoid any kind of leakage and is designed for handling differential pressures. Heavy-Duty Rotary Air-Lock Valve is made using quality grade raw material which ensures durability of use along with long lasting trouble free service.