Guide for selection and use of pneumatic ball valve as a guide for selection of air travel regulator
★ Travel
The large stroke is the difference between the large safety elongation height and the low compression height. The whole journey or any part of it can be used. If an internal buffer is required, please indicate the increased height. The addition of the buffer will reduce the total stroke. Take 300180J-2 as an example:
1. Low height, large height, design height and safe extension height can be read directly from the abscissa in Figure 1 (Page 11), which are 85, 235, 180 and 206 respectively
2. Full stroke=. large height -. low height=235-85=150mm
Safe travel=safe extension -. Low height=206-85=121mm
★ Force
The force here refers to the force you want to support or push in the application. You can read the force value directly from the static parameter diagram. Note that in general, the force decreases with the increase of height. Take 300180J-2 as an example.
1. Calculate the bearing capacity of the set height under a certain inflation pressure: if the inflation pressure P=5Kg/cm2 and the height H=115mm, then the bearing capacity of the air ball valve is C=2600Kg according to the figure, for example, point (1) corresponds to the point on the ordinate.
3. Calculate the internal volume when the inflation pressure P=7Kg/cm2 and the height is 115mm: 5.61dm3 is found in Figure 1 (Page 11),
For example, point (2) corresponds to the point on the volume coordinate axis.
Here, don't point out that the content volume of the pneumatic ball valve changes little with the increase or decrease of the inflation pressure, so only a volume/stroke curve under the pressure of 0.7MPa is given, and the volume values under other pressures can be approximately found from this curve.
★ Selection of air inlet size
The size of the air inlet is directly related to the response sensitivity of the pneumatic ball valve in use. Generally, the larger the air inlet is, the more sensitive the response is.