Select a pneumatic valve for the following operating conditions
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This post was last edited by Sammy_Wang on 2015-7-24 at 10:40. Medium: fine solid powder (containing corrosive toxic gases); DN500, 95°C, -0.04–0.1 Mpa; operation frequency of 3–5 times per cycle. High gas tightness is required. It is installed on the vertical pipe at the bottom of the equipment (at the discharge point). What type of valve should be chosen, according to experts?
Pneumatic O-type shut-off ball valve or pneumatic V-type shut-off ball valve; the valves are made of 316L material with a hard seal. If the requirement for low internal leakage is not very high, a pneumatic butterfly valve can also be used.
Track ball valves should meet the requirements; it’s just that the price is a bit high.
Thank you. Stainless steel DN500 ball valves are too expensive; I plan to use soft-sealed butterfly valves, but I’m worried about their lifespan.:(
Find the right valve and bring it here so we can take a look and broaden our knowledge
Medium: Fine solid powder (containing corrosive toxic gases); DN500, 95°C, -0.04–0.1 Mpa; operation frequency of 3–5 times per minute. High gas tightness is required. It is installed on the vertical pipe at the bottom of the equipment (at the discharge point). What type of valve should be chosen, according to experts? Valve requirements: 0 leakage, high number of switch operations, short switching time of 3 seconds. Butterfly valves are also suitable for valves that require frequent switching; however, if soft seals are used, their lifespan will be very short. A triple-eccentric butterfly valve can be considered; it offers zero leakage, a hard seal, and a relatively long service life
1. Pneumatic three-eccentric butterfly valve 2. Pneumatic ball valve on tracks (which is extremely expensive) 3. Pneumatic bellows globe valve (select the appropriate material depending on the circumstances)
The triple-eccentric butterfly valve should be the preferred choice, mainly because it is used with solid materials; a leakage rate of level 6 is required, and there is a concern about blockages, right?
But try the knife gate valve; hard and soft seals are available as options