Q:What does copper ball valve mean by "1/2"?

1/2 is inch inch, which is what is usually called "valve", and the caliber is "DN15". You can see the contrast chart of the valve diameter and inch.

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:Calculation formula of ball valve flow

Q=Cd*A* (2*delta_P/rou) ^0.5Among them, Cd is the flow coefficient, generally take 0.6~0.8, you can go to check informationA is the opening areaDelta_P is the differential pressure between the inlet and outlet of the ball valveRou is the density of the fluid

Q:Ball valve specifications are represented by 2 FF,

FF refers to the form of connection between the valve and the pipe lineFF, or Flat Face, is a common form of flat flange connection

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:PP-R double joint hot melt copper ball valve DN50 connection method how to connect?

The way of hot melt welding, using special electric welding machine can do the things that do, configuration 50

Q:Which is the smallest flow valve, globe valve or butterfly valve? Which one is the biggest?

Ball valve with minimum flow resistanceStop valve flow resistance maximum

Q:Home PPR pipe ball valve, which is good?

Home PPR tube, ball valve, globe valve should be Weixing better the price is relatively affordable, after all, is one of the ten major brands.

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

DN20, standard parts are produced according to the national standard size, you say ordinary ball valve, if it is according to the standard size is standard

Q:What is retractable hemispherical valve? What's the area with the manual hemisphere valve?

Telescopic hemisphere valve is a telescopic hemisphere valve, ordinary hand hemisphere valve, of course, without expansion joints.Telescopic ball valve is a combination of expansion joint and ball valve. It has the telescopic deformation caused by heating and absorbing the axial, transverse and angle of the absorption pipeline. Absorb the vibration of equipment and reduce the influence of equipment vibration on pipeline.