Q:What are the inside parts of the ball valve?

The ball valve consists of a ball, stem, valve seat, upper bearing, lower bearing, spring and valve body.

Q:What's English for ball valves?

Mechanical introductionThe main characteristics of the electric ball valve of the valve itself is compact, easy operation and maintenance for water, solvents, acids, and natural gas general working media, but also applies to poor working conditions of media, such as oxygen, hydrogen peroxide, methane and ethylene. Ball valve body can be integrated, or can be combination. Ball valve in the pipeline is mainly used to do cutting, distribution and change the direction of flow medium. Ball valve is a new type of valve widely adopted in recent years. The resistance of fluid is small, and its resistance coefficient is equal to that of pipe of same length.The ball valve is simple in structure, small in size and light in weight. Tight and reliable, at present, the ball valve sealing surface materials widely used in plastic, good sealing, vacuum systems have been widely used. Convenient operation, open and close rapidly, from fully open to fully closed as long as 90 degree rotation, facilitate remote control. Easy maintenance, ball valve structure is simple, the sealing ring is generally movable, disassembly and replacement are more convenient. In full open or full closed, the ball and valve seat sealing surface and dielectric isolation, the media through, will not cause the valve sealing surface erosion. Wide range of applications, from a few millimeters to a few millimeters, large to a few meters, from high vacuum, high pressure can be applied.It is generally believed that the ball valve is suitable for direct opening and closing, but the development of the ball valve has been designed to make it throttling and controlling the flow. The main features of the valve itself is compact, easy operation and maintenance for water, solvents, acids, and natural gas general working media, but also applies to poor working conditions of media, such as oxygen, hydrogen peroxide, methane and ethylene. Ball valve body can be integrated, or can be combination.

Q:Under what circumstances with the butterfly valve, under what circumstances with the ball valve?

Selection principle of ball valve:1, oil, natural gas transmission mains, need to clean the pipeline, and be buried in the ground, all pass by, the ball valve full welded structure; buried in the ground, select all pass through ball valve welded connection or flange connection; pipe flange connection, welding, selection of connection, all pass through or shrink the diameter of the ball valve.2, product oil pipeline and storage equipment, choose flange connected ball valve.3, the city gas and natural gas pipeline, choose flange connection and internal thread of the floating ball valve.1 、 in the oxygen piping system of the metallurgical system, the fixed ball ball valve should be selected after the strict degreasing treatment and the flange connection.2, low temperature medium piping system and device, should choose to use the valve cover of low temperature ball valve.3 、 the lifting rod type ball valve can be used on the pipeline system of the catalytic cracking unit of the oil refining unit.4, chemical systems such as acid and alkali corrosive media and piping systems, it is appropriate to choose austenitic stainless steel, PTFE seat sealing ring for all stainless steel ball valve.5 、 metal to metal sealing ball valve can be used in metallurgy system, power system, petrochemical equipment, piping system or device of high temperature medium in city heating system. 6, the need for flow regulation, you can choose the worm gear drive, pneumatic or electric with V shaped opening of the regulating valve.

Q:What does "41H" mean in the ball valve Q41H-16?

Q- ball valve;4- flange connection;1- through flow channel; (structural form)H-Cr13 stainless steel; (material)16- nominal pressure; (1.6Mpa)Body material: WCB, A105This is manual, and the valve body is WCB.

Q:What's a twin hot melt ball valve?

Is a plastic ball valve, connecting France is hot melt.

Q:How to distinguish between cold water valve and hot water ball valve?

Used of hot water, soft, sealed, and used in cold water

Q:3/4 inch ball valve specifically refers to the size of the ah? Great God pointing 5

DN20 caliber equivalent to3/4 inches

Q:What do you mean by ball valves dn20pn1.6rf?

DN20 caliber is 20mmPN is the pressure grade, usually PN16, 1.6MPa classRF convex flange connectionYour side should be similar to the Q41F-16 model of this type of ball valve

Q:What is the nominal pressure 1.6p of a ball valve?

Nominal pressure: reference value relating to the pressure resistance of a piping system. For ease of use, usually the priority of the R10 series is taken. Nominal pressure refers to the pipe in the two temperature (20 degrees Celsius) when the water delivery pressure. If the water temperature is between 25 and -45 degrees, the coefficient of temperature drop should be adjusted to correct the working pressure.

Q:What brand of double live catch valve is good?

PPR tube market, its competition is really strong.The old brand of the strong, is the day Feng and Jinde, the two seem to pipe and pipe fittings to provide fifty years of quality assurance, which is also one of the reasons to be assured to buy their products.As for whether pipes and fittings must be used in the same brand, the answer is No. But the brand for market share purposes, both pipe and pipe supporting the use of quality assurance.In other words, on waterways, the problems often lie at the junctions of pipes and fittings, so they use mixed products, both of which have reasons and excuses to shirk responsibility. In addition, the probability of pipe problems is higher than the pipe fittings.The big brands are the pipe prices dropped to the level of brand-name. So now the most common fraud, are pipes for brands, fittings for brand-name, careless users tend to leak in this link.The double live catch valves are good for both day and jin.