High Quality F7 type PPR single female threaded luxurious ball valve with brass ball

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High Quality F7 type PPR single female threaded luxurious ball valve with brass ball PP-R ball valve with brass ball size:20*1/2'',25*3/4''

1.Material:Random Polypropylene(Hyosung R200P);
2.ISO9001&ISO14001;
3.Standard:GB/T 18742.3-2002, DIN8077/8078;
4.OEM also ok

Q: Buy Ball Valves: You take this valve to the building materials market, see the valve handle can be sheathed in your valve stem, the valve handle is arranged to buy, your valve

Q: What does copper ball valve type Q11F-16T mean?: Q11F-16T refers to the internal thread of copper ball valves, 16 kg pressureQ refers to the ball body; 1 refers to the internal thread connection; 1 refers to the straight through; F refers to PTFE sealing cover; 16 refers to 16 kilograms of pressure; T is the valve body material is copper material, and then add, the front two also answered very specific.

Q: What are the differences and advantages between O ball valve and V ball valve?: 2 、 the switch is quick and convenientThe ball just rotated 90 degree is completed fully on or off, so it can achieve rapid opening and closing.3, good sealing performanceMost of the valve seat by four poly ethylene (PTFE) elastic materials, commonly known as soft sealing valve. Soft sealing valve has good sealing performance, roughness and machining precision and sealing surface of the valve is not very high.4, long lifeAs a result of polytetrafluoroethylene (PTFE or F4) has good self lubrication, and friction coefficient of the ball is small. Due to improved processing technology to reduce the ball roughness, thereby greatly improving the service life of the ball valve

Q: Would you please tell me why the spring is placed in the valve seat? What's the function?: Valve seat on both sides should be added spring, the seal pushed to the valve core to seal up, so put the spring.

Q: Allowable leakage on ball valves: what does CLassVI mean?: This is the valve leakage level, level VIThe GB/T4213-92 standard specifies six grades for the valve leakage. The specific requirements are shown in the standard table. The lowest level is level I, without specific requirements; the highest level is grade VI, i.e., the bubble grade.

Q: 3/43/8 above the ball valve is not usually said of the big ball valve?: Ball valve above the 3/4, 3/8, refers to the ball valve connector, thread connection water pipe diameter, 3/4, 3/8 is the pipe diameter of the British size, 3/4 is 6 in charge, equivalent to 19.1 mm diameter; 3/8 is 3 in charge, 9.5 mm. Of course, the larger the ball valve, the greater the diameter.

Q: Calculation formula of ball valve flow: The sectional area of diameter of DN15, DN25 and DN50 is respectively:DN15:15*3.14/4=176.625 mm, 0.0177 square decimeter.DN25:25*3.14/4=490.625 mm, 0.0491 square decimeter.DN50:50*3.14/4=1962.5 mm, 0.1963 square decimeter.A pipe flow rate of V=4 M / s V=40 decimeter / s, and the 1 liter =1 cubic meter, the pipe flow respectively (cross-sectional area multiplied by the velocity):DN15 pipe: flow Q=0.0177*40=0.708 L / sec,It's 2.55 cubic meters per hour.DN25 pipe: flow Q=0.0491*40=1.964 L / sec,It's 7.07 cubic meters per hour.DN50 pipe: flow Q=0.1963*40=7.852 L / sec,It's 28.27 cubic meters per hour.Note: a flow rate must be given to calculate the flow rate, which is calculated in accordance with 4 meters per second. Reference: http://zhidao.baidu /question/77687541.html answer: good night dream | six | 2010-5-24 22:46It's 600 cubic meters / hour!Flow Q=600 m3 / h = 0.167m^3/sThe flow rate is V=4Q/ (3.1416D^2) = 4*0.167/ (3.1416*0.090^2) = 26.25 m/s, and the flow velocity is very large!It could be 600 cubic meters per day:Flow rate Q=600 m3 / day = 0.00694 m^3/sFlow rate V=4Q/ (3.1416D^2) = 4*0.00694/ (3.1416*0.090^2) = 1.09 m/s flow rate is normal.

Q: What is an eccentric hemispherical valve? How do you understand?: The eccentric hemisphere valve and the flange gate valve belong to the same type of valve. The difference is that the closing piece is a sphere, and the ball rotates around the center of the valve body to open and close a valve.

Q: What are the use of all - way ball valves and reducing ball valves respectively? What are the advantages?: But for the need for regular pigging of the pipeline, no matter what medium to transport, you must use full diameter ball valve.

Q: Ball valve, PTFE pad inappropriate choice, is not easy to bad ah?: PTFE gasket is mainly resistant to high temperature, easy aging, but the use of such soft sealing gasket, ball valve sealing performance.

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