PRESSURE RELIEF VALVES FOR SAFEGUARDING OF THE SUCTION SYSTEM
- Manual – Pneumatic – Electric Ø 140-600 foldway sash shutter on brass
- Manual – Pneumatic – Electric Ø 200-600 foldway sash shutter on bearings
- Standard non-sealed or version with sealing gasket, in galvanized steel or stainless steel.
The main feature of this type of valve is the free passage of the sucked material throughout the diameter section, avoiding obstructions to the transported material.
- safety valve against damage to the suction system due to instantaneous depression. An important performance of this valve is its use to safeguard the suction system against any over-depression with the opening of the valve at the desired depression by means of a counterweight calibrated at the desired pressure.
If there is a higher depression in the system due to the closure of all the suction inlets, it could cause a curling of the piping and damage to the system. The opening of the valve starts automatically without any electrical or electronic control system.
The range of retractable or slide valves is very varied in terms of performance: there is the possibility of having a sealed closure which has the advantage of almost hermetically closing the duct and also reduces the noise in the closed position, which should not be underestimated in living the work environment. There are various closing systems, from the equalizer arm to the pneumatic type with closing speed based on the work they are required to perform in order to allow a more or less rapid closing according to the working times of the machine. There is the version in galvanized steel or stainless steel where the standard version is possible and the ATEX version for environments with possible fires or sparks.
Customization has no limits, from the spacing of the opening-closing mechanisms from the duct, to operate with hot air, to the ATEX version and more.
The choice of the type of closure to be installed is always based of the type of material that passes through it and the level of closure that the machines require.
The closing-opening systems are vital elements for the extraction system, for the machines where they have to be installed and for the work environment.
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