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南通2W-040-10k

2021-06-05 15:27:34
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南通2W-040-10k
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The cut-off pressure difference of the angle punch type valve is relatively large.


Because the resultant force generated by the medium acting on the valve core produces a small torque on the valve shaft, it can withstand a large pressure difference, so the cut-off pressure difference of the quarter-turn valve is very large.


Why should a hard seal be used as much as possible for the shut-off valve?


As far as the cut-off effect is concerned, soft-sealed valves perform better than hard-sealed valves. However, the solenoid valve control soft-seal valve is much worse than the hard-seal valve in terms of wear resistance and reliability. Therefore, from the double standards of leakage and reliability, the hard-seal valve is better than the soft-seal valve. At present, many cut-off valves are made of overlay welding wear-resistant alloys, which greatly improves the sealing performance and can meet the requirements of the cut-off valves.


The double-seat control valve is prone to vibration under small opening conditions.


The reason why the double-seat regulator cannot be used with a small opening is its valve seat structure. This control solenoid valve double-layer regulator has two spools, the upper spool is flowing open, the lower spool is flowing closed, and the spool of the regulator is flowing open, so when the spool of the double-layer regulator is working close to The valve core will oscillate when it is within the small opening range of the flow closed state. Therefore, when selecting the control valve, it is necessary to avoid using the double-seat control valve in the small opening range.


2W-040-10k

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