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dome valve seal
The valve core of the dome valve is a spherical dome. During the opening and closing process of the dome valve, there is a gap of about 2mm between the valve core and the rubber sealing ring, so that the valve core and the rubber sealing ring can move in a non-contact manner. The purpose is to There is no friction between the valve core and the sealing ring to reduce wear. The pneumatic actuator of the dome valve is a fully enclosed rotary push rod type cylinder, which directly drives the dome valve to rotate, effectively preventing the occurrence of wear and leakage caused by dust entering it.
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dome valve seal
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dome valve seal
The valve core of the dome valve is a spherical dome. During the opening and closing process of the dome valve, there is a gap of about 2mm between the valve core and the rubber sealing ring, so that the valve core and the rubber sealing ring can move in a non-contact manner. The purpose is to There is no friction between the valve core and the sealing ring to reduce wear. The pneumatic actuator of the dome valve is a fully enclosed rotary push rod type cylinder, which directly drives the dome valve to rotate, effectively preventing the occurrence of wear and leakage caused by dust entering it.
When the dome valve is in the closed state, the rubber sealing ring is inflated, and the expansion is tightly pressed on the spherical dome valve core, thereby forming a very reliable sealing ring, preventing the flow of materials in the pipeline. When the dome valve is opened, the rubber sealing ring is exhausted, the valve core of the dome valve is opened, and the valve is opened at this time.
The valve core of the dome valve adopts different materials and different hardening treatment methods on the surface according to different applications. The smooth and hard surface of the valve core can ensure good close contact with the rubber sealing ring to ensure reliable sealing. The rubber sealing ring is made of special materials, and has the characteristics of high temperature resistance, corrosion resistance, wear resistance, aging resistance, etc., and has a long service life. When the valve is opened, the material port is fully circulated without obstruction. The valve is suitable for medium: gas, liquid, semi-fluid and solid powder.
Main technical parameters Nominal diameter DN mm 50 80 100 150 200 250 300 Working pressure MPa ≤1.0 Working temperature ℃ ≤200 Control gas source pressure MPa 0.4～0.6 Air consumption L/time 1～3 Applicable medium Particles, dry ash, dry powder materials Fourth, matters needing attention The inflation pressure of the rubber sealing ring should be guaranteed to be 0.30 ~ 0.60MPa and higher than the conveying pressure of 0.15MPa, the working pressure of the cylinder should be 0.45 ~ 0.65MPa, use clean, dry, oil-free compressed air.
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