Can’t the bypass control of a reciprocating compressor be done using manual valves?
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For this chemical engineering question, I’m not sure where the error lies. After checking, it says that control valves are more suitable for use in bypass systems – is that why? “For reciprocating compressors used to regulate flow, manual valves installed on the bypass pipe can be butterfly valves, globe valves, or gate valves, etc.” ”
Control is generally not carried out using a bypass line for the control valve; manual valves in the high-pressure section close slowly, and pressure backflow can be very dangerous. Our policy requires that multiple bypass lines be prohibited from being used, with control being performed only through the control valve. Previously, after the control valve was closed, the bypass valve remained open, which caused the inter-stage liquid separation tanks, such as the expansion buffer tanks, to have their safety valves activate~~~~
During the first driving test, a manual valve can be used; for subsequent process operations, a control valve can be employed