Structural diagram and description of the Foss Valtek flow booster
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I searched for Valtek flow boosters used by Fox. There is a manual available on Douding or other websites, but it’s entirely in English and impossible to understand. Does anyone have a Chinese version of this manual? We’re facing some issues during production: the valve fluctuates repeatedly when opened, the pressure output by the actuator also varies, and the amplifier releases air intermittently. It seems like the problem lies with the amplifier, but since there are no technical specifications available, I don’t know how to diagnose it
It’s double-acting, right? We have encountered this problem in our unit; it’s not an issue with the amplifier, but rather a stuck piston rod in the actuator. It gets fixed by disassembling and reassembling it each time. But it became stuck again after a short while; it seems there is something dirty in the air path or that the piston rod is slightly deformed. I wanted to replace the locator, but the fixing bolts at that time could only be removed using British-style sockets; in the end, it was sufficient to replace the piston assembly from the new locator.
I need the Chinese instructions for the pneumatic amplifier. Is that document available? Fors’ technicians also said that they only have the English version, not the Chinese one.
I increased the flow restriction for the air intake on the pneumatic amplifier a bit, and now it works without any problems