valve plate using one or more of the valve plate installed on the shaft pin. Introduction - industrial valve manufacturer High temperature and high pressure eccentric butterfly valve shaft is located at the ends of the shaft tight fit guide supported ( Sometimes called bearing) , the valve plate installed on the shaft hole, in order to prevent of the lateral movement of the shaft and valve, lateral movement will lead to axis misalignment. Thrust washer can also be put on both ends of the valve plate and between the valve plate and fujian, to keep the Industrial Valves disc and seat in a strictly axis.

there are many different eccentric butterfly valve, resilient seated structure to deal with high temperature and high pressure ( Most of the structure in a similar way operation) 。 Most commonly used for soft seat design is to use a tenderizer effect, if use high pressure from - Side ~ 0 ring or elastomer on the bearing surface, due to the pressure of soft material will be out of shape. In other words, when the pressure will be soft material to the bearing surface, deformation ( Figure 4. 23) 。 By poisson effect upstream pressure than the downstream pressure is larger, the seal is better. Resilience in the polymer set to 0 ring, due to poisson effect, they work really well.

is related to the poisson effect 'locking lever' or 'toggle effect', it USES - A hinged elastic body, the elastomer middle section thin in outer diameter and inner diameter. When pressure, flexure structure allows the seat diameter and sealing metal surface ( Figure 4. 24) 。 Third have resilience of seat structure was additive machine load effect, it has light inside diameter valve seat and valve disc diameter emblem of interference. When the valve plate close to the seat to closing, it is in contact with the valve seat. And when the valve plate - Move into the seat, due to the effect of pressure of the valve plate, lead to deformation of polymer in the metal surface and the seat. In some cases, the manufacturer may use mechanical load and additive 'loose effect both to get the right closed ( Figure 4. 25) 。 When using a soft seat, it also has the second

a purpose, its role as tao gasket between the body and the support frame. Typically used for high temperature of metal disc [ Under the 400 ( 250C) The above] 。 Seats and seat metal support frame as a whole ( Use a metal gasket in place of soft seat normal set of ( Figure 4. 26) 。 In many structure, soft seats and metal seat can be used in series, can make the metal seated under the condition of the soft seat failure as spare parts ( Figure 4. 27) 。 Introduction - industrial valve manufacturer Eccentric butterfly valve butterfly valve is used for fire safety of high temperature and high pressure conditions, set the spare seat. In the working condition of throttling, tend to stay in the middle valve stroke in the all time, and never close the valve, don't set the seat as measures of saving investment.

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