velleman
Brand reference:76376
Products from this brand
Germany velleman valve velleman model velleman price
velleman valves are used to prevent backflow of the medium, opening automatically using the kinetic energy of the fluid itself and closing automatically during reverse flow. They are commonly installed at the outlet of water pumps, the outlet of steam traps, and other locations where reverse fluid flow is not permitted. Check valves are classified into three types: swing check, lift check, and wafer check. For swing check valves, the fluid can only flow from left to right; they close automatically during reverse flow. For lift check valves, when the fluid flows from left to right, the valve core lifts to form a passage; during reverse flow, the valve core is pressed against the valve seat and closed. For wafer check valves,
German velleman plug velleman model velleman price
velleman plug is a control module that can output a signal or provide a digital on/off signal to actuate controlled equipment when control is required, while also receiving feedback signals from the equipment to report to the host. It is an important component in fire alarm linkage systems. Input/output modules available on the market can provide a pair of passive normally open/normally closed contacts to control the equipment. Some manufacturers' modules can be configured via parameters for active output (such as GST GST-LD-8301). Corresponding dual input/output modules are also available.
velleman electrical components Germany velleman model velleman price
velleman electrical components are chemical devices that directly convert the chemical energy of fuel into electrical energy, also known as electrochemical generators. They are the fourth power generation technology after hydroelectric, thermal, and nuclear power. Since fuel cells convert part of the Gibbs free energy in the chemical energy of fuel into electrical energy through electrochemical reactions, they are not limited by the Carnot cycle effect, resulting in high efficiency; in addition, fuel cells use fuel and oxygen as raw materials and have no mechanical transmission parts, so they emit very few harmful gases and have a long service life. From