Pneumatic Explosion-Proof Soft Sealing Flange Two-Way Pressure Butterfly Valve

(0 reviews)

Get Price

(118) Views

(0) Contacts

Contact Company

Shanghai Yawang Valve Co., Ltd.

Shanghai, China

(732) Views

(4) Contacts

The pneumatic flanged butterfly valve is composed of an angular stroke pneumatic piston actuator and a butterfly valve body.
It is designed with a three-dimensional eccentricity principle so that the space movement trajectory of the sealing surface is idealized, and there is no friction and interference between the sealing surfaces.
Appropriate, so that the sealing, corrosion resistance, high-temperature resistance and wear resistance of the butterfly valve have been reliably guaranteed.
The pneumatic flange butterfly valve has a small opening torque, is flexible and convenient, and saves labor and energy.
As a component used to realize the cutting off and flow control of the pipeline system, the soft sealing butterfly valve has been widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower, and so on.
The butterfly plate of the soft-sealing butterfly valve is installed in the diameter direction of the pipeline.
In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0° and 90°.
When it rotates to 90°, the valve is fully open.
The characteristics of the new high-life stainless steel butterfly valve and the problems in the use of the butterfly valve.
Soft sealing butterfly valve can be divided into flange soft sealing butterfly valve, wafer soft sealing butterfly valve, and welding soft sealing butterfly valve according to the connection method.

                                                            Design Basis
                                                            GB standard
                                                        
                                                            design standards
                                                            GB/12238
                                                        
                                                            Structure length double link
                                                            GB/12221
                                                        
                                                            Connection flange size
                                                            GB/12221
                                                        
                                                            Experiment and Inspection
                                                            JB/T9092
                                                        
                                                            Remarks
                                                            The structural length and connection size of the series ball valves can be designed and manufactured according to customer requirements
                                                        
                                                            Nominal diameter
                                                            DN15-400mm
                                                        
                                                            link method
                                                            Flange
                                                        
                                                            sealing material
                                                            Nitrile rubber (X), PTFE (F), fully lined with tetrafluoroethylene (F46)
                                                        
                                                            control method
                                                            Switch type, adjustment type, three-stage type (adjustable opening)
                                                        
                                                            Air pressure
                                                            Double acting: 4-8bar, single acting: 5-8bar
                                                        
                                                            Body Material
                                                            Cast iron (Q), carbon steel (C), stainless steel (P4, P6)
                                                        
                                                            ambient temperature
                                                            Standard type:-20~80℃
                                                        
                                                            medium temperature W1
                                                            -40~180℃, W5: -20~80℃, W7: -40~160℃
                                                        
                                                            Cylinder options
                                                            AT Series, AW Series, AT Series, AW Series
                                                        
                                                            Cylinder form
                                                            Double acting, single acting (spring return)
                                                        
                                                            Nominal pressure
                                                            6, 10, 16bar (If you need higher pressure, please specify your requirements.)

1. Pneumatic wafer butterfly valve is simple in structure, small in size, and light in weight. It only consists of a few parts, which are easy to install.

2. When the pneumatic wafer butterfly valve is in the fully open position, the thickness of the disc is the resistance when the medium flows through the valve body, so the pressure drop generated by the valve is very small, so it has better flow control characteristics.

3. Pneumatic wafer butterfly valve has two types of seals: elastic seal and metal seal. Elastic sealing valve, the sealing ring can be inlaid on the valve body or attached to the periphery of the disc.

4. Pneumatic wafer butterfly valve has a long service life, but it is difficult to achieve complete sealing. Metal seals can adapt to higher operating temperatures, while elastomeric seals have the disadvantage of being limited by temperature.

5. The ingenious wedge-shaped design enables the pneumatic wafer ball valve to have the automatic sealing function of closing and tightening.