Hard seal butterfly valve is a long-life and energy-saving butterfly valve. Its structure is designed according to the principle of three-dimensional braiding, and the valve seat adopts a multi-level structure compatible with hard and soft sealing, with exquisite processing and advanced technology. Hard seal butterfly valve is composed of valve body, butterfly plate, multi-level valve seat, valve rod, transmission mechanism and other main components. The hard seal butterfly valve is therefore widely used in the pipeline of corrosive media such as metallurgy, electricity, petroleum, chemical industry, air, gas, combustible gas, water supply and drainage.

Structural characteristics of hard seal butterfly valve

The hard seal butterfly valve is designed based on the three-dimensional eccentric principle, which makes the space movement track of the sealing surface ideal, and the sealing surface has no friction and interference with each other. In addition, the sealing material is properly selected, so that the tightness, corrosion resistance, high temperature resistance and wear resistance of the butterfly valve are reliably guaranteed. Its main features are as follows:

D343H worm gear flange hard seal butterfly valve

1. Small opening torque, flexible and convenient, labor-saving and energy-saving.

2. Three-dimensional cored structure makes the butterfly plate more and more tight, and its sealing performance is reliable to achieve no leakage.

3. High pressure resistance, corrosion resistance, wear resistance, long service life, etc.

Standard for hard seal butterfly valve

Design standard: GB/T12238989; JB/T8527997

Flange connection size:

GB/T9113.1-2000； GB/T9113.2-2000

GB/T9115.1-2000； GB/T9115.2-2000

Structure length: GB/T12221989

Pressure test: GB/T13927992; JB/T9092999

Actuator of hard seal butterfly valve

1. Hard seal butterfly valve has powerful functions: intelligent, adjustable and on-off.

2. The volume of hard seal butterfly valve is small: its volume is only about 35% of that of similar products.

3. Easy to use: single-phase power supply, simple wiring; The original bulbous structure makes observation more convenient; It is free of oil and spot inspection, waterproof and rust-proof, and installed at any angle.

4. The protection device has double limit, overheat protection and overload protection. The full travel time is 15 seconds, 30 seconds, 45 seconds and 60 seconds. And with manual function.

5. Intelligent numerical control of hard-sealed butterfly valve: the built-in module uses advanced computer chip and intelligent control software to directly receive the standard signal (4-20mA DC/1-5VDC) output by the computer or industrial instrument to realize the intelligent control and precise positioning of valve opening.