Q:I've seen a lot of hot water projects. Why do most of them use globe valves, and ball valves are seldom used?.Globe valves have those benefits compared to ball valves (because the cut-off valve is more expensive, I think it is more expensive and more useful. It must have some advantages in that respect.)Is the stop valve more durable than the ball valve?What are the specific differences between the two PPR valves?

Yes, now the globe valve is more than the ball valve with more people, and its main or cut-off valve, a lot of adjustability, and most can be universal.Specific differences are as follows:Valve opening and closing parts are plug shaped valve, sealing surface flat or cone, fluid along the centerline of the valve for linear motion. Stem movement in the form of lifting rod (stem lifting, hand wheel not lifting), but also lifting, rotating rod type (hand wheel with the valve stem to rotate up and down, nut on the valve body). Valve is only applicable to fully open and fully closed, does not allow for adjustment and throttle.The cut-off valve is a forced seal type valve, so when the valve is closed, the valve must be applied to the pressure, to force the sealing surface is not leaking. When the medium into the valve six from the bottom of the valve, the operating force required to overcome the resistance, is the stem and the packing friction and pressure generated by the media thrust force than the valve off the valve opening force, so the diameter of the valve stem, otherwise it will bend the stem top of the fault. In recent years, the emergence of self sealing valve, globe valve replaced by medium flow on the top of the valve into the valve chamber, then in the medium under pressure, the valve off a small force, and force open the valve, stem diameter can be reduced accordingly. At the same time, in the role of media, this form of valve is also more stringent. China's valve "three to" has stipulated that the flow direction of the cut-off valve should be top-down.

Q:What does 1000WOG mean on a ball screw valve?

It's also a standard, huh?

Q:What does the RTFE say in the ball valve?

RTFE reinforced PTFE is more wearable than PTFETeflon PTFEThe seat of tetrafluoroethylene specified for a temperature range of ~200 DEG C -32. High temperature resistance and chemical resistance. Because of its high density and good permeability, PTFE can also prevent the corrosion of most chemical media.Conductive PTFE is an improved PTFE product that allows the current to pass through the lining and thereby cancel the insulation properties of ptfe. Because of its conductivity, conductive PTFE can not be checked by edm.+ reinforced PTFE RTFERTFE is a modification of PTFE material. Pure PTFE although very low coefficient of friction (0.02~0.04) but the wear volume is great, but also because of its easy creep, poor mechanical properties, low bearing capacity, poor dimensional stability characteristics such as friction material has great localization. Only modified by compound method to meet the special requirements of all walks of life sealing material on the wear resistance, to improve the wear resistance of PTFE, can be incorporated into some wear-resistant materials such as glass fiber, carbon fiber, graphite, molybdenum disulfide, bronze powder and some organic compounds, making them reticular junction formed in the PTFE layered structure so as to improve the the stiffness, thermal conductivity, creep resistance, and greatly improve the wear resistance.PTFE is composed of tetrafluoroethylene monomer polymerization of the polymer, the wax is similar to a PE transparent or opaque, its density is 2.2g/cm3, the water absorption rate of less than 0.01%. Its chemical structure is similar to that of PE, except that all hydrogen atoms in polyethylene are replaced by fluorine atoms. Because the C-F bond is high and stable in performance, it has excellent chemical resistance

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:Which one is more durable?

Butterfly type unused, a long handle used, the quality is very good.

Q:How to distinguish between single and double ball valve?

Single ball valve, pneumatic ball valve is a single short; double valve, double acting pneumatic ball valve is referred to as.Single acting pneumatic ball valve is open air, spring off; and double acting pneumatic ball valve, gas gas is closed.Single / double ball valve, is divided according to the actuator, the actuator has a single pneumatic actuator and double acting pneumatic actuator.Single acting pneumatic actuator Pneumatic actuator to more than double spring, loss of gas supply, the spring to reset actuator.For hazardous media or conditions requiring a safe position when the gas source is lost, a single action is recommended.Selection must be based on the size of the field air pressure to select the spring force, otherwise it may cause air pressure is less than overcome the spring force and can not drive the actuator.When the actuator is selected, the minimum spring force should be allowed to drive the valve normally, taking into account the gradual reduction of the spring force.

Q:What does copper ball valve type Q11F-16T mean?

Q refers to the ball valve, 1 refers to the connection mode, the latter 1 refers to the straight through type, F refers to the sealing material, 16 refers to the nominal pressure of 10 times, T refers to the main material for copper material.

Q:Where to buy the ball valve?

Use less to the local hardware market, use more direct to find a company to buy

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

The best is gold, the sun and the sun! And Dr. water is not bad. What package fifty years are Pihua, generally as long as the master work basic pipe will not be a problem. It's important for the master to do the work

Q:Who knows why the ball valve is divided into a piece of ball valve, two pieces of ball valve, three pieces of ball

There is, of course, a difference,This is according to the structure of the valve body,The difference between them is whether they are easy to disassemble, for example, the three piece of ball valve is easiest to disassemble.