Hydraulics and Pneumatics: Unit II: Hydraulic Actuators and Control Components
poppet (or seat) valves
Hydraulic Actuators and Control Components - Hydraulics and Pneumatics
The most common form of poppet valve is shown in Fig.6.1. Normally this valve is in the closed condition and hence there is no connection between port 1 and port 2.
POPPET (OR SEAT) VALVES The most common form of poppet valve is shown in Fig.6.1. Normally this valve is in the closed condition and hence there is no connection between port 1 and port 2. In poppet valves, balls, discs or cones are used in conjunction with valve seats to control the flow. In the Fig.6.1, a ball is shown. When the push-button is depressed, the ball is pushed out of its seats and hence the flow is permitted from port 1 to port 2. When the push-button is released, spring and fluid pressure force the ball back up against its seat and so closes off the flow. Poppet valves exhibit the following advantages : (i) Simple in design, (ii) Less expensive, (iii) Very robust, and (iv) Less sensitive to fluid contamination. The force required to operate the poppet valves are more. Therefore they are suitable mostly for low pressure applications. Poppet valves are essentially two-way valves. Therefore they are limited to: (i) applications in which flow reversal is not required, e.g., check valves and relief valves, and (ii) low-power applications because of their relatively high leakage rates.1. Construction and Operation
2. Advantages of Poppet Valves
3. Disadvantages of Poppet Valves
4. Applications of Poppet Valves
Hydraulics and Pneumatics: Unit II: Hydraulic Actuators and Control Components : Tag: : Hydraulic Actuators and Control Components - Hydraulics and Pneumatics - poppet (or seat) valves
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Hydraulics and Pneumatics
ME3492 4th semester Mechanical Dept | 2021 Regulation | 4th Semester Mechanical Dept 2021 Regulation