For shutting off and controlling liquids or gases.
Valves and shut-off devices are components for regulating, blocking, dosing or controlling the flow. They can be used with a variety of media: gases, liquids, powders and granulates. We offer special ball valves for use with drinking water, certified according to DVGW. Due to their versatility, they can be found in all industries.
Where did ball valves get their name from? They are called ball valves because a ball is located inside the fittings. It is perforated to ensure flow. Ball valves are typically used to block media. They are available in different versions to control the flow. There are two types of passage: full passage and reduced passage. With full passage, the ball has the same inside diameter as the connected pipe. With reduced passage, the bore of the ball is smaller than the clear width of the pipe. This results in flow losses. Two-way ball valves have one inlet and one outlet. In contrast, three-way ball valves have one input and two possible outputs. Instead of a smooth through bore on the inside, they feature an L- or T-bore. This distributes the medium to the first, second or both outputs.
Ball valves and blocking flaps can be operated manually by means of manual levers and butterfly handles, or pneumatically and electrically using actuation drives. Blocking flaps are only used for opening and closing. They block the pipe completely with a ball rotation of 90°. This clearly distinguishes them from blocking valves. Blocking flaps do not have a predefined installation direction, i.e. they are bidirectional. They can thus be installed horizontally, vertically or diagonally.
Solenoid valves open or close the passage of a medium. The valves are actuated by an electromagnet. There are three different designs.
Directly controlled solenoid valves have a drive directly connected to the valve piston. The valve is closed when the solenoid is switched off. The solenoid opens the valve by means of the piston lifted by the valve seat. No minimum pressure is required. Pilot-operated valves require a minimum pressure for opening and closing. The electromagnet moves forward to release the sealing element. Pilot-operated valves offer the following advantage: Small electromagnets are used to control high pressures at large nominal widths. Forced solenoid valves combine the functions of pilot-operated and directly controlled valves. They do not require a minimum pressure and are suitable for larger nominal sizes and connection sizes. The special feature of this valve is that the solenoid opens and closes the valve without requiring differential pressure between inlet and outlet.
Check valves block the flow in one direction and allow it in the opposite direction with low resistance. The valve is blocked by means of a cone, ball, plate or diaphragm, usually with a pretensioned spring. Non-return valves are available in a straight-way variant and angle seat design. The angle seat design has the following crucial advantage: Maintain the internal components without removing the valve from the pipe.
Safety valves prevent the pressure from exceeding a specific maximum value by releasing excess pressure into the atmosphere. Our safety valves are type-tested and the trigger pressure is preset (sealed).
Do you have questions regarding compressed air systems and pneumatics? Do you want to know how to use and install RIEGLER products in the most efficient way? Our employees will be happy to assist you. Feel free to contact us. We look forward to hearing from you.