The minimum working pressure is 0.01Mpa, and the range from 0.01Mpa to the maximum working pressure is not affected by temperature and working pressure fluctuations, and the water is drained continuously. It can drain saturated temperature condensate, the minimum undercooling is 0 ℃, there is no water in the heating equipment, and the heating equipment can achieve the best heat exchange efficiency. The back pressure rate is more than 85%, which is one of the most ideal traps for production process heating equipment.
2. Free semi floating ball drain valve: the free semi floating ball drain valve has only one semi floating ball bucket as a moving part, with the opening facing downward. The bucket is both a hoist and a seal. The whole spherical surface can be sealed, with long service life, water hammer resistance, no wearing parts, no fault, durable, and no steam leakage. The back pressure rate is greater than 80%, which can drain the saturated temperature condensate, the minimum undercooling is 0 ℃, and there is no water in the heating equipment, so that the heating equipment can achieve the best heat exchange efficiency. When the device is just started, the air and low-temperature condensate in the pipeline enter the drain valve through the launch tube, the bimetallic strip emptying element in the valve pops the ball barrel open, the valve opens, and the air and low-temperature condensate are discharged quickly. When the steam enters the drum, the drum will generate upward buoyancy, and the temperature in the valve will rise, the emptying element of the bimetallic sheet will shrink, the ball poke will float to the valve mouth, and the valve will close. When the steam in the drum becomes condensed water, the drum loses its buoyancy and sinks, the valve opens, and the condensed water is discharged quickly. When the steam enters the ball barrel again, the valve is closed again, and works intermittently and continuously.
3. Rod floating ball trap: the basic characteristics of lever floating ball trap are the same as that of free floating ball trap. The internal structure is that the floating ball connects with the lever to drive the valve core, and the valve is opened and closed as the condensate level rises and falls. The lever floating ball trap uses double valve seats to increase the condensate displacement, which can achieve small volume and large displacement, with the maximum drainage capacity of 100 tons/hour. It is the most ideal trap for large heating equipment.
4. Inverted bucket drain valve: an inverted bucket is a liquid level sensitive part inside the inverted bucket drain valve, the bucket opening is downward, and the inverted bucket connecting lever drives the valve center to open and close the valve. The inverted bucket drain valve can exhaust air, is not afraid of water hammer, and has good anti fouling performance. The undercooling is small, the steam leakage rate is less than 3%, the maximum back pressure rate is 75%, there are many connectors, and the sensitivity is not as good as that of free floating ball trap. Since the inverted bucket drain valve is closed by steam upward buoyancy, it is not suitable for use when the working pressure difference is less than 0.1MPA. When the device is just started, the air and low-temperature condensate in the pipeline enter the drain valve, the inverted bucket falls by its own weight, the inverted bucket connecting lever drives the valve core to open the valve, and the air and low-temperature condensate are discharged quickly. When the steam enters the inverted bucket, the steam of the inverted bucket will generate upward buoyancy, and the inverted bucket will raise the connecting lever to drive the valve core to close the valve. There is a small hole on the inverted bucket. When some steam is discharged from the small hole and the other steam generates condensate, the inverted bucket loses buoyancy and sinks by its own weight. The inverted bucket connecting lever drives the valve core to open the valve, circulate and discharge water intermittently.
5. Combined superheated steam trap: the valve has an advanced and reasonable structure. Under the working conditions of overheating, high pressure and small load, it can timely discharge the condensed water formed when the superheated steam disappears, effectively prevent the leakage of superheated steam, and has high working quality. The maximum allowable temperature is 600 ℃. The valve body is made of stainless steel, and the valve seat is made of hard alloy steel. With a long service life, it is a special steam trap for superheated steam. It has obtained two national patents, filling the domestic gap. When the condensate enters the lower valve chamber, the float of the auxiliary valve rises with the liquid level, and the float seals the inlet pipe hole. The condensate rises to the main valve chamber through the water inlet conduit, and the inverted bucket falls by its own weight, driving the valve core to open the main valve and discharge the condensate.
When the level of condensate in the auxiliary valve chamber drops, the floating ball drops with the level and the auxiliary valve opens. Steam enters the inverted bucket in the upper main valve chamber from the steam inlet pipe. The inverted bucket generates upward buoyancy, and the inverted bucket drives the valve core to close the main valve. When the condensate level in the auxiliary valve chamber rises again, the next cycle starts again, and the water is discharged intermittently.

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