Pneumatic Butterfly Valve
Overview
Pneumatic butterfly valve is composed of pneumatic actuator and butterfly valve. Pneumatic butterfly valve is a pneumatic valve that uses a circular butterfly plate that rotates with the valve stem to open and close to achieve the activation action. It is mainly used as a shut-off valve, and can also be designed to have the function of regulation or shut-off valve and regulation. Butterfly valves are increasingly used in low-pressure large and medium-caliber pipelines. Pneumatic butterfly valve classification: stainless steel pneumatic butterfly valve, metal seal pneumatic butterfly valve, soft seal pneumatic butterfly valve, carbon steel pneumatic butterfly valve. The main advantages of pneumatic butterfly valves are simple structure, small size, light weight, and low cost. This feature is particularly significant for pneumatic butterfly valves. They are installed in high-altitude dark passages and are easy to operate through a two-position five-way solenoid valve. The flow medium can also be adjusted.
features
1. Compact double-piston rack structure with constant output torque.
2. Aluminum cylinder, piston and end cover are light in weight compared with actuators of the same specification structure.
3. The cylinder is extruded aluminum alloy, hard anodized, with hard inner surface, high strength and hardness. The sliding bearing made of low-friction material avoids direct contact between metals, has low friction coefficient, flexible rotation and long service life.
4. The connection between pneumatic actuator and valve complies with ISO5211 standard.
5. The air source hole complies with NAMUR standard.
7. The bottom shaft assembly hole of the pneumatic actuator (complies with ISO5211 standard) is double square, which is convenient for linear or 45° angle installation of valves with square rods.
8. The top and bottom holes of the output shaft comply with NAMUR standard.
9. The adjustment screws at both ends can adjust the opening angle of the valve.
10. The same specifications are double-acting and single-acting (spring return). 11. The direction can be selected according to the valve needs, clockwise or counterclockwise rotation.
11. Install solenoid valves, positioners (opening indicators), reply devices, various limit switches and manual operating devices according to user needs.
advantages
Large torque/long life/easy adjustment
Cylinder grinding and hard anodizing treatment
Wear-resistant and long service life, standard length
Cylinder body does not shorten, sufficient stroke and large torque
High-end pinless valve plate
The pinless valve plate design isolates the fluid from the valve stem to prevent the pin from falling off and leaking out of the valve plate. The pinless valve plate is driven by a precision hexagonal shaft, and no screws or pins are required, making maintenance and replacement more convenient.
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