Pneumatic Actuated Wafer Type Butterfly Valve
Features
Operation Cycles |
Over 20,000 times |
Leakage Level |
Bubbles-tight sealing with no leakage |
Low Torque |
Operation easy and flexible |
Bidirectional Sealing |
Any installation position |
Lower Cost |
Simple and compact structure with high cost-effectiveness |
Low Flow Resistance |
Improve fluid efficiency and reduce energy consumption |
Sealing Materials |
Rich variety over 15 types |
Coating Grade |
Conventional and special conditions of C1-C5 & CX |
Wide Application |
Water treatment, petrochemicals, Marine vessels, mining, electricity etc |
Certificates |
ISO9001, CE, WRAS, ACS |
Specifications
Design Standard |
EN 593 API 609 |
Top Flange Standard |
ISO 5211 |
End Flange Standard |
EN1092 PN10/16, ANSI 125LB/150LB, JIS 10K |
Face to Face Dimension |
API 609, EN558-1 Series 20, BS5155, DIN3202 K1 |
Testing Standard |
API 598, EN12266 |
Temperature |
-20℃~120℃ (depends on the sealing material) |
Body Material |
Ductile Iron(GGG40), Carbon Steel(WCB) |
Disc Material |
Ductile Iron, Stainless Steel |
Shaft Material |
Stainless Steel, Aluminum Bronze, Inconel |
Seat Materia |
EPDM, NBR, WRAS EPDM, VITON, Silicone |
Pneumatic Actuator |
Double acting/single acting (spring return) |
Actuator Structure |
Rack and Pinion type, Scotch Yoke type |
Dimension
Size |
D |
□T |
PN10 |
PN16 |
ANSI 150LB |
Top |
|||
Ф D 1 |
n - Ф d |
Ф D 1 |
n - Ф d |
Ф D 1 |
n - Ф d |
||||
DN50 |
43 |
9*9 |
125 |
4-19 |
125 |
4-19 |
120.6 |
4-19 |
F05 |
DN65 |
46 |
9*9 |
145 |
4-19 |
145 |
4-19 |
139.7 |
4-19 |
F05 |
DN80 |
46 |
9*9 |
160 |
4-19 |
160 |
4-19 |
152.4 |
4-19 |
F05 |
DN100 |
52 |
11*11 |
180 |
4-19 |
180 |
4-19 |
190.5 |
4-19 |
F07 |
DN125 |
56 |
14*14 |
210 |
4-19 |
210 |
4-19 |
215.9 |
4-22.4 |
F07 |
DN150 |
56 |
14*14 |
240 |
4-23 |
240 |
4-23 |
241.3 |
4-22.4 |
F07 |
DN200 |
60 |
17*17 |
295 |
4-23 |
295 |
4-23 |
298.4 |
4-22.4 |
F10 |
DN250 |
68 |
19*19 |
350 |
4-23 |
355 |
4-28 |
361.9 |
4-25.4 |
F10 |
DN300 |
78 |
22*22 |
400 |
4-23 |
410 |
4-28 |
431.8 |
4-25.4 |
F10 |
DN350 |
78 |
22*22 |
460 |
4-23 |
470 |
4-28 |
476.2 |
4-28.4 |
F10 |
DN400 |
102 |
27*27 |
515 |
4-28 |
525 |
4-31 |
539.7 |
4-28.4 |
F14 |
DN450 |
114 |
27*27 |
565 |
4-28 |
585 |
4-31 |
577.8 |
4-31.8 |
F14 |
DN500 |
127 |
36*36 |
620 |
4-28 |
650 |
4-34 |
635 |
4-31.8 |
F14 |
Automation Accessories
Our pneumatic actuated wafer butterfly valves can be equipped with a complete range of automation accessories for reliable remote operation, monitoring and precise process control. All accessories are compatible with ISO 5211 and NAMUR standards for easy installation and maintenance.
Limit Switch Box
Provides accurate open and closed valve position feedback for remote monitoring and automated control systems.
Solenoid Valve
Controls compressed air supply for fast and reliable automatic opening and closing of pneumatic actuators.
Air Filter Regulator
Removes moisture and impurities while maintaining stable air pressure to extend actuator service life.
Valve Positioner
Provides precise valve positioning based on control signals for accurate flow regulation and process automation.
Manual Override
Allows manual valve operation during power or air supply failure, ensuring continuous plant operation.
Frequently Asked Questions
Everything you need to know about pneumatic actuated wafer butterfly valves, including operation, actuator selection, accessories and applications.
What is a pneumatic actuated wafer butterfly valve?
A pneumatic actuated wafer butterfly valve is an automatic quarter-turn valve operated by compressed air. It combines a wafer-type butterfly valve with a pneumatic actuator to provide fast, reliable on/off or flow control. It is widely used in water treatment, HVAC, chemical processing, and industrial automation systems.
Double Acting vs. Spring Return Actuator?
A double-acting actuator uses compressed air for both opening and closing, providing higher torque output and faster operation. A spring-return actuator uses compressed air in one direction and springs for automatic return, providing fail-safe operation when air supply is lost.
How does a pneumatic butterfly valve work?
Compressed air drives the rack-and-pinion mechanism inside the pneumatic actuator, converting linear piston movement into 90° rotary motion. This rotation operates the butterfly valve disc to achieve automatic opening, closing or flow regulation.
What is the difference between wafer and lug butterfly valves?
A wafer butterfly valve is installed between two pipeline flanges using through bolts, offering a compact and economical solution. A lug butterfly valve uses threaded lugs on the valve body, allowing independent pipeline maintenance and dead-end service applications.
What accessories are available for pneumatic actuators?
Available accessories include solenoid valves, limit switch boxes, air filter regulators (AFR), valve positioners, manual overrides and quick exhaust valves. These accessories improve automation performance, monitoring capability and operational safety.
