Mechanical drain valves include free floating ball type, free semi floating ball type, lever floating ball type, inverted bucket type, etc Free floating ball steam trap: The free floating ball steam trap has a simple structure, only a stainless steel hollow floating ball with fine grinding of a moving part inside. It is both a float and a hoist, without vulnerable parts, and has a long service life. YQ steam trap is equipped with Y series automatic emptying device inside, which is very sensitive and can automatically exhaust air, with high working quality. When the equipment is just started, the air in the pipeline is discharged through the Y series automatic air exhaust device, and the low-temperature condensate enters the drain valve. The level of condensate rises, the float rises, the valve opens, and the condensate is discharged quickly. The steam enters the equipment quickly, and the equipment rapidly heats up. The temperature sensing liquid of the Y series automatic air exhaust device expands, and the automatic air exhaust device closes. The drain valve starts to work normally, the floating ball rises and falls with the condensate level, and the steam is blocked and drained. The valve seat of the free floating ball trap is always below the liquid level, forming a water seal, no steam leakage, and good energy-saving effect.

(6) Check whether the connection position of each part of the pneumatic butterfly valve is compressed. On the one hand, ensure the tightness of the packing, and on the other hand, ensure that the valve stem can rotate flexibly.