Straight Diaphragm Valve Feature
1) A diaphragm valve where the flow path is nearly straight, with little pressure loss and deposit of fluid.
2) Suited for viscous fluids, dietary fibrous fluids, slurries, sludges, and fluids that contain floating solid matter.
3) Choose an actuator that meets your requirements. Applies to manually operated, pneumatically operated, and electrically operated types.
Water purification plants, sewage treatment plants, etc.
There are two main categories of diaphragm valves: one type seals over a “weir” (saddle) and the other (sometimes called a “straight-way” valve) seals over a seat. The main difference is that a saddle-type valve has its two ports in line with each other on the opposite sides of the valve, whereas the seat-type has the in/out ports located at a 90 degree angle from one another. The saddle type is the most common in process applications and the seat-type is more commonly used as a tank bottom valve but exists also as a process valve. While diaphragm valves usually come in two-port forms (2/2-way diaphragm valve), they can also come with three ports (3/2-way diaphragm valves also called t-valves) and more (so called block-valves).
|Butyl rubber||0.6 – 14||15 – 350||– 22 to 134||– 30 to 90||Acids and alkalies|
|Nitril rubber||0.6 – 14||15 – 350||14 to 134||-10 to 90||Oils, fats and fuels|
|Neoprene||0.6 – 14||15 – 350||– 4 to 134||– 20 to 90||Oils, greases, air and radioactive fluids|
|Natural/synthetic rubber||0.6 – 14||15 – 350||– 40 to 134||– 40 to 90||Abrasives, brewing and dilute mineral acids|
|White natural rubber||0.6 – 5||15 – 125||– 31 to 134||– 35 to 90||Foods and pharmaceuticals|
|White butyl||0.6 – 6||15 – 150||– 22 to 212||– 30 to 100||Natural color, food, plastics and pharmaceuticals|
|Viton||0.6 – 14||15 – 350||41 to 284||5 to 140||Hydrocarbon acids, sulphture and chlorine applications|
|Hypalon||0.6 – 14||15 – 350||32 to 134||0 to 90||Acid and ozone resistant|
|Butyl rubber||0.6 – 14||15 – 350||– 4 to 248||– 20 to 120||Hot water and intermittent steam services, sugar refining|