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 suitable for operating usually. Open or close rapidly. Having portability. 2. Having low fluid resistance. 3. Having simple structure, low volume, light weight, convenient for maintenance. 4. Having...
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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. 3. Seal ring adopts carbon strengthened PTFE cant elastic seal ring. The seal ring is pressed on ball to realize zero leakage and enhance service life. 4. Face to face: welded end, screw end,...
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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 for small caliber pipes for its long length, rotary adjusting rod and good regulating performance (DN≤150mm). Butterfly valve Butterfly valve has short length, handle regulating rod,...
Valves in Water System of Heating Air Condition Read
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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 valve. Soft seal butterfly valve uses rubber seal ring. Hard seal butterfly valve uses metal seal ring. Based on connection, stainless steel butterfly valve is classified into flanged butterfly valve...
Stainless Butterfly Valve Introduction Read
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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, F46, PVDF, PP, PO, PE, etc, having good lubrication. Seal pairs have low coefficient of friction, ensuring plug rotating flexibly and long service life. B. Ends of body adopt double groove seal...
Soft Seal Plug Valve Introduction Read
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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) Metal sealed plug valves: The material of seal face is metal. (3) Oil Slick sealed plug valves: Utilize grease to seal. 3. Working pressure (1) Vacuum plug valves: Working pressure is lower than...
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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 metal. The mechanical properties of forging are more excellent than castings. Based on temperature, forging can be classified into cold forging and hot forging. Generally, cold forging is...
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Check valve allows medium to flow in one direction, stopping counter flowing. The valve operates automatically. With the pressure of fluids, the disc opens. When fluids counter flowing, pressure make disc coincide with base and cut off medium. Check valve is classified into swing check valve and lift check valve. Swing check valve has a hinge. To ensure disc can reach to the appropriate position on base, the disc is put inside hinge so that disc has adequate swing space and makes disc...
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The valve, commonly utilized in water supply system, includes gate valve (screw thread, flange), globe valve (screw thread), check valve (screw thread, flange), butterfly valve, etc. Gate valve: Actuation of gate valve can be classified into clear bar, dark bar, manual, electric and motor. Gate valve has small fluid resistance, small force. It allows fluid to flow in any directions. But gate valve has complicated structure. Sealing face of gate valve is easily polished by impurities or particles...
Types of Valves in Water Supply System Read
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The common utilized valves in heating system include globe valve, gate valve, butterfly valve, ball valve, check valve, safety valve, pressure reduction valve, pressure maintaining valve, balanced valve, regulating valve and other self-operating or electric regulating valve. Globe valve: Globe valve is used to cut off medium flowing. It has function of regulating and large pressure losses. Globe valve is commonly utilized for heating system to cut off steam in pipe. "J" represents...
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