Swing check valve – Müller

Mô tả

The Müller swing check valve is an automatic valve that allows flow in only one direction and prevents backflow. Inside the valve, a swing-type disc opens when forward flow pressure is present and closes when the flow stops or reverses, preventing water hammer and protecting pipeline equipment.
This type of valve operates without external power, offers high durability, and is suitable for various fluids such as clean water, wastewater, oil, and gas.
Construction:
– Valve body: Gray cast iron (GG25), ductile iron, steel, stainless steel
– Valve bonnet: made of the same material as the valve body
– Disc: cast iron, steel, or rubber-lined (EPDM/NBR)
– Sealing gasket: EPDM, NBR, PTFE
– Hinge shaft
– Bonnet bolts and nuts
Technical specifications:
– Size: DN50 – DN200
– Working pressure: PN10, PN16, PN25
– Working temperature: 0–80°C (cast iron) / up to 180°C (stainless steel or steel)
– Connection type: flanged, threaded
– Body material: gray cast iron, ductile iron FCD450, stainless steel 304/316, carbon steel
– Media: clean water, wastewater, compressed air, oil, fire protection systems
Key Characteristics:
– Allows one-directional flow, automatic opening and closing
– Simple structure, easy maintenance
– Lower pressure loss compared to spring check valves
– High durability, suitable for dirty water and environments with small solid particles
– Smooth operation, minimizes water hammer
– Can be installed horizontally or vertically
Benefits:
– Cost-effective
– Low maintenance
– Easy installation
– Suitable for a wide range of media
Disadvantages:
– Closes more slowly than spring check valves (may cause slight shock at high flow rates)
– Not suitable for very high-pressure applications