Flow control valve use and maintenance
2015-12-15 by bridge
Gas Control Valve in any opening degree vibrate. ① propping; vibration source nearby ②; ③ spool and bushing wear serious.
Propane Control Valve vibration near the fully closed position. ① big selection valve, often used in small opening; ② single-seat valve medium flow and closed in the opposite direction. Regulating valve leakage increases. The reason leak follows: leakage volume valve is fully closed. ① spool is worn, serious internal leakage, ② strictly off valve is not adjusted. Valve reach the fully closed position. ① too much media pressure, the actuator rigidity is small, strictly off valve; a foreign body inside ② valve; ③ sintered bush. Slow movement of the control valve. Slow phenomenon and the reasons are as follows: Stem only slow motion in a single direction. ① pneumatic membrane actuator diaphragm breakage in leakage; ② implementing agencies in the "O" type seal leakage. Stem at reciprocating action are slow phenomenon. ① sticky substance clogging the valve body; ...