Butterfly pneumatic pneumatic valve and gate valve application under different working conditions

brake use pneumatic valve and butterfly valve in the pipeline are in the switch, adjust the action of the flow. , of course, in the adjustment of pneumatic valve and gate valve are in the process of matching method, hong feng pneumatic valve manufacturer to teach everyone how to matching: brake pneumatic valve and butterfly valve to reduce pipe in water supply network turns the soil depth, generally larger diameter pipe equipped with pneumatic valve, butterfly on the depth of covering the impact is not big, equipped with pneumatic valve gate, but the same specifications of the pneumatic valve gate prices are higher than the price of the pneumatic valve adjustment. As for the diameter of the line should be taken into account according to the specific situation around. From nearly a decade in terms of usage, the failure than the brake of butterfly pneumatic valve pneumatic valve is high, so in situations where conditions permit, enlarge the using range of pneumatic valve gate is worthy of attention.
about brake pneumatic valve in recent years, many domestic pneumatic valve manufacturers, the development, the pneumatic generic soft sealing gate valve, this kind of brake pneumatic valve than traditional parallel double wedge or disc brake pneumatic valve has the following characteristics:
a. Pneumatic soft sealing gate valve of pneumatic valve, pneumatic valve cover by using precision casting foundry, a molding, basic mechanical processing, do not use seal copper ring, save non-ferrous metals.
　　b. Pneumatic soft sealing gate valve at the bottom of the pit does not accumulate slag content, brake pneumatic valve opening and closing of low failure rate.
　　c. Soft seal rubber lining pneumatic valve plate size is unified, strong interchangeability.
so pneumatic soft sealing gate valve is a form of water supply industry is willing to adopt. The current domestic manufacturing pneumatic soft sealing gate valve diameter of mm, caliber in - but most of the manufacturers Mm, between domestic manufacturing process has many problems, it is understood that a pneumatic valve manufacturer of pneumatic valve body is entrust domestic foundry cast in resin sand molding turn, soft seal pneumatic valve plate imported from a foreign company. The company believes soft sealing gate is the key components of the pneumatic valve rubber lining pneumatic valve plate, and the technical requirement of rubber lining pneumatic valve plate is higher, not all foreign manufacturers can achieve, often buy assembly from the reliable quality of the manufacturer.
domestic copper nut pneumatic soft sealing gate valve block is embedded on the rubber lining at the top of the pneumatic valve plate, similar to brake the structure of the pneumatic valve, due to the nut block the activity of the friction to make rubber stripping of pneumatic valve plate. A company abroad pneumatic soft sealing gate valve, copper nut block is embedded in the rubber lining inside the gate, form the whole, to overcome the above disadvantages, but the pneumatic valve cover combined with pneumatic valve body of concentricity requirement is higher.
but in pneumatic soft sealing gate valve opening and closing, never to be close to death, as long as the stop-water effect can be reached, otherwise not easy open or rubber lining. A pneumatic valve manufacturers, in the pneumatic valve pressure test, inspection, use the torque wrench to control the degree of closure, as tap water company of pneumatic valve operating personnel should also follow this method.