Gulde5100 control valve: change from air-operated to air-shut
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The Gulde5100 control valve needs to be changed from air-operated to air-shut; how should this be done, and are any parts need to be replaced?
Changing a control valve from air-operated to air-shut usually isn’t possible on-site.
How are Goldle valves? Who has used it.
The air-on valve should be replaced with an air-off valve, and the valve core structure of the control valve must have the capability to be changed; not every type of valve core can be modified in this way. 1. Direct-acting pneumatic diaphragm control valve: (1) Replace the normally open valve with a normally closed valve, and install the valve core in the reverse orientation; in other words, change the regular triangle shape of the valve core to an inverted triangle shape. Then fix it with rivets. To replace a normally closed air valve with a normally open one, just reverse the approach. (2) Replace the reaction air opening valve with an air closing valve, and install the valve core in reverse; in other words, change the inverted triangle (the shape of the valve core being ▽) to an upright triangle △. Then fix it with rivets. To change a reaction-type air shut-off valve to an air-opening valve, just reverse the approach. 2. Angle-control valves: (1) Single-acting type: Taking a ball valve as an example, after separating the actuator, rotating the valve core by 90 degrees and reconnecting it (that is, manually moving it from the closed position to the open position before reconnecting it to the actuator) enables switching between air-open and air-close operation modes. The same is true in reverse.