Description of pneumatic three-way ball valve

Source: Internet Release Date: 2011/5/4

XNUMX. ZSHT type pneumatic teeBall valveDetails of:
The three-way ball valve is a new type of three-way switching control valve developed by integrating advanced technologies at home and abroad.The standard ball core has L-shaped three-way and double-port holes. The relative angle between the ball core and the pipeline can be changed to achieve different combined control of the three pipeline fluids; the T-shaped hole can be used for proportioning, suitable for liquid, gas, Adjust and control the ratio of steam and other media.
Pneumatic three-way ball valve is composed of GT type, DA type, AW type pneumatic piston double-acting or single-acting (spring return type) actuators, with proportional adjustment type (electric-pneumaticvalveThe positioner, powered by electric signals and compressed air, accepts the 0-10mA DC or 4-20mA DC current signal input by the control system, changes the rotation angle of the ball core, and can realize the proportional adjustment action).Two-position switching type (using electromagnetic reversing valve, valve position echo device, AC220V or DC24V power supply voltage and compressed air as power to achieve rapid switching control of fluid media)
1.The three-way ball valve has two-seat and four-seat sealing structures. The spool channel has two structural forms, L-type and T-type. The rotation angle of the spool is controlled, and the connection state between the spool channel and the pipe port can be changed. Combination control.The three-way ball valve has a large flow capacity, which can control gas, liquid, and steam, and is more suitable for controlling high-viscosity, fibrous and granular fluids.It is also suitable for occasions with strict sealing requirements.
2.The two-seat sealed three-way ball valve has compact structure, beautiful appearance and good sealing performance. It can switch the flow direction of the medium in the pipeline.It can also connect or close the two channels that are perpendicular to each other (such as flow diagram A)
3.The four-seat sealed three-way ball valve has beautiful appearance, compact and reasonable structure. It can not only realize the switching of the medium flow direction, but also make the three channels communicate with each other. At the same time, it can close any one of the channels to connect the other two channels and control the tube flexibly The path is the confluence or divergence of the medium (as shown in the flow diagram B).
4. T-shaped spool orifice allows three orthogonal pipelines to communicate or switch to each other to split or merge; L-shaped orifice connects two orthogonal pipelines.Cut off the other channel to change the flow direction of the medium.
5.Three-way ball valveThe main product series: select working conditions as shown in the flow diagram; A diagram L type, B diagram T type (1-4)

 

 

Nominal diameter mm

DN15-DN300

Material code

C (WCB)

P (304)

R (316)

The main parts

Valve body

WCB

ZG1Cr18Ni9Ti

ZG1Cr18Ni12Mo2Ti

Sphere

2Cr13, (304)

1Cr18Ni9Ti

1Cr18Ni12MoTi

Stem

2Cr13

1Cr18Ni9Ti

1Cr18Ni12MoTi

Seat seal

Reinforced polytetrafluoroethylene, p-polyphenylene

filler

PTFE, flexible graphite

Applicable working conditions

Applicable medium

Steam, water, oil

Nitric acid alkali corrosive medium

Acetic acid corrosive medium

proper temperature

PTFE ≤180℃, para-polyphenylene ≤300℃

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