Characteristics of vent butterfly valve 1. The structure of vent butterfly valve is welded by center line disc and short steel plate, having compact structure, light weight, convenience for installation, small flow resistance, high flow capacity. It is not affected by high temperature expansion. 2....
Three-way ball valve utilizes ball as its closure member. The ball rotates with center line of body to open or close valve. Characteristics of three-way ball valve 1. Open or close without friction The structure does not have the disadvantages that sealing faces of conventional valve rub with...
Pneumatic ball valves use a ball with a hole as open-close part. The ball rotates with axis which is vertical to channel so that it can open or close valve. Pneumatic ball valves are used to connect or cut off medium inside pipes. Advantages of pneumatic ball valves: 1. Pneumatic ball vales are...
Most of butterfly valves can be used for medium containing suspended solid pellets for disc moving with wipe. According to strength of sealing face, butterfly valves are also used for powdery or grainy medium. Butterfly valves have low face to face dimension and overall height, opened or closed rapidly...
Structure of welded ball valve: 1. Welded ball valve is made of carbon steel seamless steel tube which is pressed into intergrated welded ball valve. 2. Stem is made of AISI303 stainless steel. Body is made of AISI304 stainless steel which has been grinded finely, having good seal and corrosion resistance....
Based on structure, stainless steel butterfly valve can be classified into offset plate butterfly valve, vertical plate butterfly valve, cantboard butterfly valve, lever butterfly valve. Based on seal, stainless steel butterfly valve is classified into soft seal butterfly valve and hard seal butterfly...
Common valves in water system of heating air condition include gate valve, globe valve and butterfly valve. Gate valve For its moderate length, rotary adjusting rod and good regulating performance, gate valve is widely utilized in large caliber pipes. Globe valve Globe valve is suitable...
1. According to structure, categories of plug valves can be classified into cylindrical plug valves and conic plug valves. 2. Materials of seal face (1) Non metal sealed plug valves: Seal face of plug valves is made of PTFE, rubber, nylon, PPL, flexible graphite and other soft materials. (2)...
Soft seal plug valve is applicable for medium having corrosion or toxicity. The materials of valve cannot cause pollution to medium. For different medium, body is made of alloy steel, carbon steel and stainless steel. A. For different temperature, lubricating liner of plug valve is made of F4,...
Forging is a kind of process that using metal forming machinery presses to metal billet, making it deform plastically to acquire mechanical properties, shape and size. Forging is a common forming process widely utilized in machinery. Forging can eliminate cast loose and welding holes inside...