Butterfly valve has simple structure, can be used for low-pressure pipe media. It achieves the opening and closing function by turning a closing piece, names as disc, around a shaft throughout the top to the bottom of it. Butterfly valves can be used to control the flow of various types of fluids, including air, water, steam, and a variety of corrosive media, slurry, oil, liquid metals and radioactive media. It is mainly composed of valve body with a circle shape in the middle, stem/shaft, disc and seat (seal ring) built in the body.

Advantages of butterfly valve for sale

1. Easy to open and close quickly, labor-saving, small fluid resistance.

2. Simple structure, small form factor, short structure length, small size, light weight, suitable for large diameter valves.

3. Suitable for slurry, due to accumulate the least slurry in the valve.

4. At low pressure, it can achieve good seal.

5. Good adjustment ability.

6. Small fluid resistance at full open condition, thus high flow speed can be achieved.

7. Small opening and closing torque.

8. Good sealing performance at low pressure, because the seal material is generally rubber.

9. Easy to install.

10. Flexible operation and effort-saving, can choose manual, electric, pneumatic, hydraulic mode.

Butterfly Valves Installation

1. Install lever (for manual operated valve) or hand-wheel (for gear operated valve).

2. Using lever or hand-wheel, turn (clockwise) to ensure valve is in full closed position. Disc should be aligned parallel to the ends.

3. If disc is not aligned parallel to the ends, for lever style – slightly loosen top plate (by loosening bolts), turn lever clockwise until disc is centered & parallel to ends, and re-tighten top plate. For gear operated valve, adjust hex nuts on side of gearbox. Fully open and close disc several times to assure proper operation. If re-alignment is necessary, repeat.

Butterfly Valves Installation 2

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4. Proceed with valve installation into the piping system. Note that "wafer: style valves are placed between flanges and installed with fully threaded studs, whereas tapped "lug" style valves are installed between flanges with small-cap screws on the inlet and the outlet of the valve.

5. Spread the mating flanges to exceed the valve's face-to-face dimension by 3/16" before placing the valve into position to prevent distortion and/or damage to the sealing face of the seat.

6. Ensure that the pipe flange faces are clean of any foreign material such as scale, metal shavings, or welding slag.

7. With the disc in the closed position, carefully insert between the flanges, line up, and center. Note that accurate centering between upstream and downstream pipe ends is essential for the trouble-free operation of the valves.

As a professional pipeline valves manufacturer, Hebei metal has high-quality silicone flanged gate valves for sale. Welcome to contact us if needed.