High Quality F4 Type PP-R single female threaded ball valve brass ball

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High Quality F4 Type PP-R single female threaded ball valve brass ball PP-R ball valve with brass ball size:20*1/2''-63*2''

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

Q: Replacement method of PPR hot melt ball valve: 1, need to replace the valve, if the valve is flange or wire connection type, directly open flange or loosen the screw, the ball valve can replace a broken;

Q: Electric ball valve installation need to pay attention to what?: 8, electric and pneumatic valve in order that no special contract allows only vertically installed in the indoor use. 9, after the completion of the pipeline construction, all the valves on the pipeline line shall be opened and the residual dirt shall be removed.

Q: How much pressure can the flange ball valve withstand?: How many can, each kind of pressure specification has the different material quality, the thickness request, the ball valve can also use in the high pressure class.

Q: Which is more cost-effective electric ball valve?: Be sure to pick a company that is strong and a quality assurance company!Zhejiang Xinou Automation Instrument Co., Ltd is a professional manufacturer of all kinds of industrial control valves and related automatic control equipment, has been committed to the industrial process control valves and related equipment R & D and production, professional manufacture of electric, pneumatic industrial control valve and the 38 series of more than and 400 specifications of products.

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: Advantages of track ball valves: 1., the fluid resistance is small, and the coefficient of resistance is the same length as the pipe section. 2., simple structure, small size, light weight. 3., close and reliable, at present the ball valve sealing surface materials widely used plastic, good sealing, vacuum system has also been widely used. 4 easy operation, open and close rapidly, from fully open to fully closed as long as 90 degree rotation, facilitate remote control. 5., maintenance is convenient, ball valve structure is simple, the sealing ring is generally active, disassembly and replacement are more convenient. 6. in full open or full closed, the ball and valve seat sealing surface and dielectric isolation, the media through, it will not cause erosion of the valve sealing surface. 7., a wide range of applications, from small diameter to a few millimeters, large to several meters, from high vacuum, high pressure can be applied.

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: For example, how many sizes and pressures are used in the two piece?: A piece of ball valve, the current market pressure of most products below 6.4MPA, two piece ball valve about 12.8MPA products are also common, there are 20MPA, three pieces of ball valves are mostly below 6.4MPA. Know the characteristics and shortcomings of these three kinds of ball valves, you can completely choose according to your own needs.

Q: Our factory has part of the ball valve in the direction of movement and normal ball valve is the opposite direction: anti clockwise for the turn off, clockwise. Excuse me, what's the reason for this?Excuse me, is this because the valve body installs the reason of the contrary or the reason, the ball valve is thus designed?Are there any positive and negative points when the ball valve is installed?: Ordinary ball valve is the reverse turn off, the general ball valve without direction requirements. Each kind has the direction request, generally has the arrow or the nameplate explanation on the valve body.

Q: Structure design principle of fire ball valve: The fire ball is fixed ball structure, the upper end of the main seal seal, the seal has the function of DBB, in good condition, the valve in the fully open or fully closed state, the cavity in the outfall or vent to observe the upstream seat leaks. Pipeline ball valve in normal use, the middle chamber without pressure. In the case of fire accidents, a reasonable design of the fire protection structure of the valve seat can slow down the progress of the upstream pressure medium into the middle cavity, and avoid the leakage and leakage of the medium caused by the boosting of the middle cavity. The valve seat with good fire protection design is an active measure to ensure the safety and fire resistance of the pipeline ball valve.The fireproof structure design, the design of the seat structure fire is the key, the seat of the fire performance is good, in the fire accident condition, fire structure design of the pressure between the body and the stem structure, reduce the fire around the body.

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