Pneumatic flange metal hard seal butterfly valve, flange metal hard seal butterfly valve, hard seal butterfly valve, pneumatic butterfly valve

Pneumatic flanges Full metal hard seal butterfly valve, flanged connection, pneumatic control, ISO 5211 pneumatic platform connection standard, diameter DN50-DN2000, pressure 1.6MPa to 10.0MPa, American standard 150LB-600LB. The sealing surface of the valve uses hardening technology, and the sealing surface can be surfacing or spray welding of various wear-resistant and heat-resistant alloys. Its advantages are: high temperature resistance, high pressure resistance, scouring resistance, and wear resistance.

Pneumatic flange full metal hard seal butterfly valve, flange connection standard HG/T20592, the main materials are: WCB carbon steel, LCB low temperature steel, chromium molybdenum steel, chromium molybdenum vanadum steel, SS304, SS316, SS316L, SS317L stainless steel, 2205 and 2507 duplex stainless steel, 904L, 254SMo, 1.4529 super stainless steel.

Pneumatic actuator

Pneumatic actuator has double action type and single action type (spring reset) two, rack and pinion type and fork type.

Rack and pinion cylinder shell is generally made of aluminum alloy die casting, light weight, beautiful appearance. Fork type cylinder shell is generally cast iron material. In addition, there are stainless steel shell and steel shell for customers to choose.

Pneumatic accessories: locator, limit switch, filter and decompression device, solenoid valve, HVSD manual operation mechanism.

Pneumatic flange all metal hard seal butterfly valve adopts three eccentric structure, does not produce plastic deformation under high pressure working condition, greatly improves the seal reliability. In the process of opening and closing, there is no sliding friction and no clamping between the butterfly plate and the valve seat. It has the advantages of sealing the more tightly closed, eliminating the uneven load between the sealing pair, and greatly extending the service life of the valve. When the valve is opened and closed, the sealing surface of the butterfly plate touches or disconnects immediately along the points of the 360 degree circle, which can quickly and accurately realize the opening or closing action.

Fire-resistant structure in the real sense: the all-metal sealing butterfly valve is the sealing structure of the all-metal valve seat and the sealing ring, which is suitable for high temperature working conditions and bidirectional zero leakage, and can realize the fire-resistant function in the real sense.

Double bevel - surface seal structure

The sealing surface of the all-metal sealing butterfly valve adopts the double bevel - surface sealing structure, which reduces the radial eccentricity, greatly increases the width of the sealing surface, makes the sealing pressure of the valve small, anti-friction, and reduces the operating torque of the valve.

Double stem design

Valve stem and butterfly plate, valve stem and drive, all adopt splinted connection structure, uniform force, easy disassembly and assembly, reduce the long-term maintenance cost of the product.

Lower valve stem fixed shaft structure, better rigidity, can shorten the valve stem inserted into the butterfly plate connection, so that the channel flow resistance is smaller.

The upper valve stem has no pin to prevent blowout structure. The design structure of the double valve stem solves the problem of inconsistent expansion between the valve stem and the butterfly plate and the valve body caused by thermal expansion.

Zero leakage of bidirectional sealing can guarantee zero leakage of bidirectional under 1.1 times of nominal pressure in the experiment, and zero leakage under bidirectional full pressure difference in use.

Anti-lock, dustproof, anti-crystallization

Self-lubricating bushing design, to a greater extent to solve the valve stem lock problem, the upper and lower bearing dustproof structure, add spiral groove anti-crystallization structure.

The dynamic load packing machine with disc spring can automatically compensate the loss of packing and prevent the leakage of medium.

Pneumatic flanged all metal hard seal butterfly valve is widely used in many industrial scenarios due to its excellent performance. The following are the specific application scenarios: Petrochemical industry: used for the transportation and cutting of crude oil, natural gas, and chemical media, such as the pipeline system of refineries and chemical plants. Power industry: suitable for boiler steam system, high temperature flue gas treatment, desulfurization and denitrification and other conditions. Metallurgical industry: used in blast furnace gas, hot blast stove, high temperature dust and other harsh environment. Pharmaceutical and food industry: in aseptic, clean, high requirements of the occasion, the use of stainless steel hard seal butterfly valve, to ensure no pollution. Other industrial fields: including metallurgy, electric power, petroleum, chemical, air, gas, flammable gas and water supply and drainage and other corrosive media pipelines, as a device for regulating flow and cutting off fluids

Packing of Standard Packing: 

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 470 gallon liquid totes Special package is available on request. E FORUs’  is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.