Product Introduction: Butterfly Valve 1. Product Overview Butterfly valve is a lightweight quick-opening pipeline control fitting, widely used in mud auxiliary pipelines, sprinkler trucks, water supply systems, construction dust suppression pipelines and low-medium pressure circulation lines. It relies on a disc-shaped butterfly plate rotating around the central shaft to realize medium cut-off and flow regulation, featuring small size, fast switch and low flow resistance. 2. Material & Structure Main Components Valve body, butterfly plate, valve stem, rubber sealing liner, driving device (hand lever, worm gear handwheel, pneumatic actuator). - Valve body: Cast iron, ductile iron or stainless steel optional, compact thin-wall structure, easy to install between flanges; - Butterfly plate: Cast steel with anti-corrosion coating, smooth surface to reduce medium scouring; - Sealing liner: EPDM/NBR rubber lining, tightly attached to the inner cavity, achieves bidirectional sealing. Connection Types Wafer type, flange type, lug type, suitable for quick clamping between two pipeline flanges. 3. Core Performance Advantages 1. Ultra-low flow resistance Straight-through flow channel with almost no flow dead zone, not easy to accumulate sediment, suitable for water, low-concentration mud and cleaning liquid transportation. 2. Fast switching operation The butterfly plate only rotates 90° from fully open to fully closed; manual models can be opened/closed in one second, greatly improving operation efficiency. 3. Lightweight & space-saving Much smaller volume and lighter weight than gate valves and ball valves of the same caliber, convenient for narrow space installation on vehicle-mounted equipment. 4. Bidirectional sealing performance The integral rubber liner fits the butterfly plate closely, realizing zero leakage under rated working pressure in forward and reverse directions. 5. Low maintenance cost Integrated replaceable rubber liner; only the liner needs to be replaced after abrasion, without changing the whole valve body. 4. Classification by Drive Mode 1. Manual butterfly valve: Hand lever / worm gear handwheel, for small-bore pipeline on-site manual control; 2. Pneumatic butterfly valve: Equipped with air cylinder actuator, remote automatic switching, suitable for centralized control of engineering equipment. 5. Main Application Scenarios 1. Municipal sanitation: Sprinkler truck water inlet and outlet pipelines, control water flow for flushing, watering and water cannons; 2. Construction engineering: Low-pressure water supply pipelines for dust suppression, grouting and foundation cooling; 3. Drilling auxiliary system: Mud tank circulation branch pipelines, sewage discharge and water replenishment control; 4. Urban water supply and drainage: General water pipeline cut-off and flow regulation. 6. Functional Value It realizes fast, flexible opening and closing of fluid pipelines, optimizes pipeline layout space, reduces equipment weight and maintenance costs. It is a universal low-medium pressure control valve widely matched with vehicle-mounted pumps and engineering circulation systems.