piston actuator's main advantage is that under the same size than the diaphragm actuators have bigger thrust. Because with the locator cylinder actuators do not need to air as a signal, factory sufficient gas supply pressure can be used to drive industrial Industrial Valves actuators. Living with a sliding ring 0 Qian than diaphragm can air under high pressure. Demonstrated its significant difference, a 25 in2 ( 161am? ) The piston of the piston actuator using 8 opai ( 5. 5条) Air can produce 200 ib ( 910公斤) Thrust. Suppose in 6 ~ 30 pai ( 0. 4 to 2. 1bar) Range, compared with the diaphragm actuators using 30 psi ( 2. 1bar) Air produced only 750 ib ( 340 kgf) The thrust. Provide the same as the piston cylinder thrust of diaphragm actuator requires a larger size.

piston actuator has small air chamber and full of high pressure air. And faster than the diaphragm actuators have speed, diaphragm actuator by using low pressure air must be filled with larger air chamber. For example, the size of 25 piston cylinder actuators in - The trip can reach 1 within seconds. 5in( 3. 8cm) , and the diaphragm actuators to spend more than two seconds of time to achieve the same schedule. In short, the piston actuators in the gas shock pei in 150 ( l0. 3bar) Or low to 30 pai ( 2. 1 ber) Able to operate. Another effect of piston cylinder actuators in operating 150 psi ( 10. 3bar) I don't need air conditioner at factory air. But the diaphragm actuators because can't normal operation more than 40 pei ( 2. 8bar) Factory, you need to the regulator.

on both sides of the air pressure in the piston, make its have larger deviation resistance, means that the actuator can control piston without being affected by the fluctuation of the process of logistics. When the cut-off valve or butterfly valve or valve throttle valve core shut and adjacent seats and produce & other; Bath crock closed pin effect & throughout; ( 9. Section 6) . This is particularly important. One-way function actuators to treat bath crock of blocking effect is difficult, because the scope of the spring, Provide resistance) Strength is not enough to prevent the above effect. Live Qian cylinder actuator Cuan resistance type under the available computing:

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