- TVN V102 Wafer Type Butterfly valve construction is formed with the centered disc rotating inside the valve body 90 degrees. With the actuation type, the flow of the fluid can be stopped, regulated or started. In a wafer connection, the valve is installed between the pipe flanges and tightened to its place with the bolts for the pipe flanges.
Butterfly Valve
HS Code : 848180
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Storage
When valves stores for some time, (2 months or more) before storing, storage should be in the original delivery crates or cases.
Wafer Type Butterfly Valve Storage Conditions
You should store the valves on the ground in a clean, dry indoor area. Protect the valve from temperature and humidity extremes, and exposure to excessive dust, moisture, vibration, deformations, sunlight and ozone.
Temperature: storage temperature below 25°C, above 0°C preferable below 15°C.
Humidity: storage conditions should be such that condensation does not occur, store in a dry environment. Maximal 50% relative humidity.
Light: You should protect valve rubbers from light, in particular direct sunlight or strong artificial light with high ultraviolet. Ozone: storage rooms should not contain any equipment generating ozone. E.g. lamps, electric motors.
Wafer Type Butterfly Valve Installation
The valves are bi-directional and can be fitted in either direction relative to the ow. The valve will control flow equally in either direction. The recommended installation position is shaft horizontal and the lower disc edge opening downstream (especially for slurry service and media with a tendency for sedimentation). For optimum valve control and smooth performance, it should have 10 to 20 pipe diameters of straight run inlet piping and 3 to 5 pipe diameters of straight outlet piping.
Do not use the valve as a crowbar to spread the flanges, this might lead to damage to the flange area and/or damage to the O-ring sealing.
