Q:Butterfly valve and ball how to distinguish from the appearance

The butterfly is oblate, the valve is cylindrical Oh, actually it is the name of the image

Q:What does "q341" and "q347" mean?

Q341 is a turbine driven flange straight through floating ball valveQ347 is a turbine drive flange through fixed ball valveShintex valve0577Eight thousand six hundred and ninety-oneSeven thousand five hundred and sixteen

Q:What is the service valve?

I'm talking about the ball valve, because I don't know exactly what you're talking about. I'll explain it to you literally. I don't know, right?

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:Pneumatic two stage ball valve principle

Pneumatic refers to the valve is automatic operation, power is compressed air;Two paragraph refers to the structure of the valve, that is, the body is composed of two parts connected by flanges, of course, there are other forms of a chip, three pieceTwo and two pieces mean one thing

Q:Is the two piece ball valve in the direction of the pressure pipe?

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:How does ball valve indicate?

Valve type designation method is standard, the landlord himself to check the JB/T308 standard, Baidu library some, and is free to download:JB/T 308-2004 valve type method of preparation clear Edition

Q:Daily maintenance of ball valve

The new parts need to be cleaned before assemblingThe assembly should have metal fragments, fiber, fat is not allowed (except the requirement to use) dust and other impurities, foreign matter contamination, adhesion or remain in part into the cavity on the surface or, if the packing is micro discharge, to lock the stem nut.Note: do not lock too tight, usually lock 1/4 circle to 1 laps, the leak will stop.(A) disassemblyMake the valve in a half open position, flush and remove dangerous substances that may exist inside and outside the valve body.Close the ball valve, remove the connecting bolts and nuts on both sides of the flange, and then remove the valve completely from the line.In order to remove the drive - actuator, a connecting bracket, lock washer, stem nut, butterfly spring, glam, wear plates, valve stem packing.Remove the body cap connecting bolts and nuts, separate the valve cover from the valve body and take off the valve cover washer.Make sure the ball is in the "off" position, which can be easily removed from the valve body and then removed from the valve seat.A hole in the body downward nudge stem until completely removed, and then remove the packing ring and the O.Caution: Please operate carefully to avoid galling, stem surfaces and body packing box seals.B) reassembleCleaning and inspection of the parts removed, it is strongly recommended to use spare parts package replacement valve seat and valve cover, gaskets and other seals.Assemble in reverse order of disassembly.Cross the locking flange bolts with the specified torque.Lock the stem nut with the specified torque.

Q:1 piece, 2 piece, 3 piece ball valve, which places are used in large quantities?

Structural features of two piece ball valve:1, opening and closing without friction. This function completely solve the traditional valve because of the friction between the sealing surface and affect the sealing problem.2, top structure. The valve installed on the pipeline can be directly checked and maintained, which can effectively reduce the device parking and reduce the cost.3, single seat design. The utility model eliminates the problem that the medium of the valve in the valve is influenced by the abnormal voltage increase.4 、 low torque design. Special structural design of the valve stem, with only a small hand, the valve can easily open and close.5 wedge sealing structure. Valve is provided by the mechanical force of the valve stem, the ball wedge to the seat and seal, so that the valve sealing is not affected by changes in pipe pressure, in a variety of conditions, sealing performance has a reliable guarantee.6. Self-cleaning structure of sealing surface. When the ball roll off the seat when the fluid in the pipeline along the sealing surface of the sphere into 360 degrees evenly through, not only eliminates the high speed fluid on the seat of local scour, also washed away the sediment on the sealing face, achieve the purpose of cleaning.

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

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