Protection of the installation against backflow of the medium: Flap valves

Added: Friday, 1/5/2024


Flap valves are an important element in the field of engineering and automation, playing a key role in controlling the flow of fluids, gases or dust in various types of systems. They are characterized by a unique design based on a flap that rotates around an axis located in the valve body. Where are flap valves best suited?

Elektryczny zawór klapowy w instalacji gazowej z rurami

Check out flap valves at the Onninen wholesaler

How to properly install a flap valve?

Gazex MAG-3/DN32 flap valve Flap check valves are very easy to install. Both vertical and horizontal installation can be performed. They must be installed in the direction of flow, remembering to leave adequate clearance when sealing. These types of check valves have extraordinary mechanical resistance, but for greater safety, remember to equip the installation with a mesh that will retain impurities.

The flap check valve opens only when the opening pressure is reached, and closes when the threshold pressure drops, i.e. when the flow stops. The valve design provides easy access for possible maintenance. The closing element is a flap that swings out of the socket and thus prevents the medium from flowing back. Please also note that the flap valve is resistant to flow pressure.

What types of flap valves are there?

Flap valves are available in both flanged and flanged versions. They have a characteristic closing element, which is a flap. It rotates around its own axis. They can be safely used in installations with large diameters. Of course, you must also remember that flap valves operate in an open/close function, but they can also have an angle adjustment option. The flap valve is most often located perpendicular to the pipeline axis, but to be fully open it must be rotated 90 degrees.

The lever seal ensures efficient operation and prevents the medium from flowing back. The use of a flap valve generates low costs, especially since they operate in a wide range of pressures and temperatures. We can distinguish three types of mounting of flap valves, i.e. those with a flanged structure, those with an inter-flange structure (the valve is located between two pipeline flanges. You can also choose a valve with an inter-flange LUG structure - the valve has threaded holes on both sides of the body.

Flap valves at the Onninen wholesaler

It is worth choosing flap valves from the Onninen wholesaler. Noteworthy is the Gazex MAG-3/DN32 flap valve . It is additionally equipped with an anti-flange set. It is a shut-off valve that ensures the safe operation of the entire installation. It is equipped with two types of electromagnetic triggers. It is characterized by very low flow resistance and low weight.

Gazex MAG-3/DN100 flap valve Another suitable choice may be the Gazex MAG-3/DN40 flap valve , which is also sold with a counter-flange set. It is characterized by high mechanical resistance and operational efficiency even in difficult conditions. The nominal pressure in this case is 0.5 MPa.

A product that may also prove useful is the Gazex MAG-3/DN100 flap valve . It serves as a security system in both private and public installations. It is also worth noting that this model is not sensitive to changes in the voltage supplying the system. Another advantage is that it does not require power supply in both the open and closed position.

Check out flap valves at the Onninen wholesaler