Manual double-acting flap valve, hand-operated screw gate, pneumatic single-opening flap valve, hard seal.

Manual bidirectional gate valve hand-operated screw gate pneumatic single-opening gate valve hard seal, Manual gate valve, also known as manual knife gate valve, is a type of valve where the gate and seat remain in tight contact for sealing. Its principle involves a circular opening on the gate that matches the pipe diameter, allowing the gate to fully disengage and realign with the opening during operation. The manual gate valve is a primary control device widely used in metallurgy, mining, construction materials, and grain industries.Manual gate valves are typically used for controlling the flow or conveyance of powdered materials, granular materials, and small lump materials in conjunction with discharge devices. The diameter of the manual screw gate valve matches the feed port of the discharge device, available in both square and circular shapes.

Manual gate valves are often paired with discharge devices or silos. The manual screw gate valve features flange connections for easy installation, with both square and circular inlet/outlet ports. Dozens of specifications are available based on port size, making it widely applicable in metallurgy, carbon, chemical, and construction materials industries. The manual gate valve boasts a simple and compact structure, rational design, reliable sealing, lightweight and flexible operation, small size, smooth flow path, low resistance, easy installation, and disassembly. The manual screw gate valve can be installed horizontally or vertically, offering wear resistance, automatic compensation, and a long service life. During normal use, all transmission parts should be regularly inspected and lubricated for maintenance.

1. Before installation, inspect the valve cavity and sealing surfaces to ensure no dirt or sand particles are attached; 2. Tighten all connecting bolts evenly; 3. Check the packing area to ensure it is compressed, guaranteeing both sealing performance and smooth gate operation; 4. Before installation, verify the valve model, connection dimensions, and medium flow direction to ensure compatibility with valve requirements; 5. Reserve necessary space for valve actuation during installation; 6. Wiring of the actuation device must follow the circuit diagram; 7. Regularly maintain the gate valve, avoiding impact or compression that may affect sealing.

Manual bidirectional gate valve hand-operated screw gate pneumatic single-opening gate valve hard seal.