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Control valve

Huijin Valve: a professional manufacturer of regulating valves.

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Pneumatic fluorine lined butterfly valve

Pneumatic fluorine lined butterfly valve

I. Overview of pneumatic fluorine-lined regulating valve
The pneumatic fluorine-lined regulating valve is composed of a pneumatic film actuator and a straight single-seat fluorine-lined plastic valve. The parts of the pneumatic fluorine-lined regulating valve that are in contact with corrosive media are made of corrosion-resistant and anti-aging polyperfluoroethylene propylene, high-pressure fluorine-lined plastic process, and sealed with polytetrafluoroethylene bellows. The pneumatic fluorine-lined regulating valve has the ability to regulate the flow of high-strength corrosive media such as acid, alkali, aqua regia, and toxic and volatile gases and liquid media. So it is widely used in chemical, metallurgy, medicine and other industries.
Characteristics of pneumatic fluorine-lined regulating valve
1, good corrosion resistance: the valve body cavity, valve core, valve seat, are lined with 3mm thick polyperfluoroethylene propylene, can withstand strong corrosive fluids.
2. Good sealing performance: Double sealing with polytetrafluoroethylene bellows and packing.
3. The leakage is small. Because the valve core and valve seat are soft sealed, no leakage is ensured.
4, high adjustment accuracy: the use of small pneumatic actuators and electric actuators, small size and light weight.
3.Pneumatic actuator with pneumatic fluorine-lined regulating valve

model ZHA-22
ZHB-22
ZHA-23
ZHB-23
ZHB-34
ZHB-34
ZHA-45
ZHB-45
Effective area cm2 350 350 560 900
Stroke mm 16 25 40 60
Spring range KPa 20 ~ 100 (standard): 40 ~ 200;
80 ~ 240; 20 ~ 60; 60 ~ 100

Fourth, the pneumatic fluorine-lined regulating valve allows differential pressure

Air supply pressure Spring range Allowable pressure difference
Nominal diameter
G3 / 4 " 20 25 32 40 50 65 80 100 150
1.4 0.2 ~ 1.0 16 16 8 5 5 3 2.5 2 1.2 0.8
4.0 0.8 ~ 2.4 16 16 16 12 11 7 6.5 4.5 2.8 2.0

V. Performance of pneumatic fluorine-lined regulating valve
Leakage: less than 0.01% of the rated capacity of the valve
Backlash: with positioner: less than 1% of full stroke
Basic error: with positioner: less than ± 1% of full stroke
Note: Use standard V-type PTFE packing
Adjustable range 30: 1
Kv value and stroke of pneumatic fluorine-lined regulating valve

Nominal diameter G3 / 4 " 20 25 32 40 50 65 80 100 150
Seat diameter 3 4 5 6 7 8 10 12 15 20 26 32 40 50 65 80 100 150
Kv value 0.08 0.12 0.20 0.32 0.50 0.80 1.2 2.0 3.2 5.0 8 12 20 32 50 70 100 240
Rated stroke 10 16 25 40 60

Dimensions of pneumatic fluorine-lined regulating valve

Nominal diameter G3 / 4 " 20 25 32 40 50 65 80 100 150
L 116 180 185 200 220 250 275 300 350 480
A 267 267 267 267 267 267 350 350 350 470
H 401 445 485 495 523 532 697 699 699 817
H1 50 65 70 80 71 88 102 140 170 190

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