{"id":2821,"date":"2024-03-07T14:18:39","date_gmt":"2024-03-07T13:18:39","guid":{"rendered":"https:\/\/www.bf-hydraulik.com\/encyclopedia\/pulse-valve\/"},"modified":"2026-04-15T11:53:08","modified_gmt":"2026-04-15T09:53:08","slug":"pulse-valve","status":"publish","type":"encyclopedia","link":"https:\/\/www.bf-hydraulik.com\/en\/pulse-valve\/","title":{"rendered":"Pulse valve"},"content":{"rendered":"\t\t
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Impulse valve for remote control of hydraulic systems.<\/h1>

A pulse valve<\/a> is a standard directional control valve<\/a> that has been extended with a mechanical actuator. This pneumatically or electromagnetically operated actuator switches the valve by means of a pulse. <\/p>

Structure of Pulse Valves<\/h2>

Pulse valve<\/a>s ensure remote-controlled and automated operation of actuators in hydraulic and pneumatic systems. This makes these systems convenient and safe to use. The controlling component is a standard switching valve, such as a 4\/2-way valve. The control spool is connected to a pneumatically or electromagnetically operated piston. A short stroke of the piston, the eponymous pulse, causes the control spool to switch. The incoming volume flow is redirected depending on the design of the pulse valve<\/a>. However, the pulse does not serve to maintain the switching position of the valve. This is the task of holding valves, which are usually equipped with a spring return for this purpose. To increase system safety, pulse valve<\/a>s are therefore often additionally provided with a detent. This prevents the unintentional resetting of the control latch. Structurally, however, directional control valves<\/a> with pulse control are designed so that the redirected volume flow itself ensures the holding position of the control spool. <\/p>

Resetting is performed by a second pulse. Depending on the design of the pulse valve<\/a>, this counter-pulse can be generated by a second pulse piston on the opposite side of the control spool or by a pulling pulse on the same side. Pulse valve<\/a>s with pulling pistons are more cost-effective and space-saving, but not as reliable as pulse valve<\/a>s with pulse pistons mounted on both sides. Therefore, they are used much less frequently. <\/p>

Application of Pulse Valves<\/h3>

The pulse valve<\/a> is a cost-effective, reliable, and energy-saving option for controlling hydraulic or pneumatic systems. It is therefore a central component of systems that are flexible and must fulfill a variety of tasks. <\/p>

For small and medium-sized systems, pneumatically operated pulse valve<\/a>s are sufficient. This makes them less susceptible to power outages. However, compressed air always requires a pressure generator, usually an electrically operated compressor. Pneumatically operated pressure valves therefore have good emergency running properties, which can become important for the controlled shutdown of a system in the event of a power failure. In large systems, long lines can reduce the reliability of pneumatic pulse valve<\/a>s. Therefore, for a certain system size, electromagnetically operated pulse valve<\/a>s are preferred. This makes them independent of compressed air, which is not always available. <\/p>

Expansion Options for Pulse Valves<\/h3>

Modern technology makes it possible to produce electromagnetically operated pulse valve<\/a>s without wiring. Since they only require a short current pulse, a locally mounted battery can provide the electrical current for operating the electromagnets. The control signal can be sent to the pulse valve<\/a> via radio. This allows for the creation of electro-hydraulically operated systems that are completely decoupled from the control unit. An example of this is large military drones with hydraulic control. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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