Wafer high performance butterfly valve
Wafer high performance butterfly valve is a cost-effective solution for a wide range of applications where bubble-tight shut-off is required. The ergonomic design incorporates the flexible-lip sealing system into a lightweight, compact body making it suitable to replace globe and gate valves which are often heavier and more expensive. This solution is suitable for Airport refueling, Hydrocarbon processing, HVAC, Air treatment, Chemical processing, Purified gas, Steam and vacuum services, Potable water, Powder and pulp processing and many more. Plus our wafer design provides an easy connection between flanges while also saving length in pipe line. Our one-piece stem design with ISO 5211 square drive makes it user friendly as well as the easily adjustable gland packing accessible with actuator mounted in place. In addition , Belleville washers on the gland nut offer primary sealing between shaft and packing while the retaining ring ensures an even pressing on both packing and stem for blowout proofing. Moreover the RPTFE chevron soft seat or Graphite chevron fire safe/metallic seat along with extended neck for pipe insulation make this product even more reliable and effective.
Wafer high performance butterfly valve provides a cost-effective solution for a wide range of applications where bubble-tight shut-off is required. Utilizing an eccentric disc and offset shaft, the design incorporates the flexible-lip sealing system into a lightweight, compact body. The result is that in many cases the valve can replace globe valve and gate valve yet easier operating, longer lasting and lower cost.
Significant performance makes the valve widely used in many applications such as Airport refueling, Hydrocarbon processing, HVAC, Air treatment, Chemical processing, Purified gas, Steam and vacuum services, Potable water, Powder and pulp processing, etc.Wafer design makes the valve convenient for connection between flanges and save length in pipe line.
- One-piece stem design with ISO 5211 square drive
- ISO 5211 direct mounting flange on the valve body
- Easy-adjust gland packing accessible with actuator mounted in place
- Belleville washers on the gland nut offer reliable primary sealing between shaft and packing
- Retaining ring for both equably pressing on packing and stem blowout proof
- Multiply rows of RPTFE chevron for soft seat valve and Graphite chevron for fire safe and metallic seat
- Extended neck for pipe insulation
- Self-energized seat resulting in longer life and reduced maintenance·Pin-less shaft to disc connection makes the valve convenient for parts replacement and reliable even under corrosion
- Seat retainer supports the seat and allows for easy changeout
- Double offset disc reducing the valve torque
- Alloy harden disc surface for metal seat increases the sealing life time
- Integral disc stop prevent disc from over travel
- Soft seat, fire safe seat and metallic seat are replaceable each other
- PTFE lined SS316 bearing support stem and increase service life
- Thrust ring for anti-blowout and anti-static
PARTS LIST AND MATERIAL SPECIFICATION
|6||Bottom cover||Same as body|
|*Supersonic spray welding of different materials on sealing surface of metal seating valve according to requirements|
|Flange standard||ASME B16.5 Class150，Class300; EN1092 PN16, PN25, PN40|
|Face to face||API 609 Category B valve Wafer|
|Pressure test||API 598|
|Temperature||PTFE seat -29°C to +200°C，metal seat -29°C to +400°C|
|Operator||Lever，Gear box，Pneumatic actuator，Electric actuator|
What is a high performance or double offset butterfly valve?
A high performance or double offset butterfly valve is a type of control flow device used to regulate the flow of materials within industrial systems. The valve combines a disc-shaped shutter with an oblique (offset) pivot axis, allowing for greater accuracy and efficiency in fluid control than other valves.
The double offset butterfly valve creates a leak-proof seal when closed, thanks to its unique design which features two seats that are independently pressed against the disc edge from opposite directions. This reduces the risk of leakage and prevents water hammering by eliminating any sudden pressure drops or increases caused by slamming shut. When open, this type of valve produces less turbulence than traditional gate style designs, allowing for smoother material passage through narrow pipelines or channels without excessive wear on surfaces.
Applications for high performance or double offset butterfly valves range from wastewater treatment plants to nuclear power plants and specialty chemical production processes due to their ability to handle corrosive liquids with superior reliability and precision while ensuring tighter shutoff capabilities than competing technologies can offer. Additionally, these valves require minimal energy consumption compared to globe/angle valves making them ideal for use in locations where space is limited such as offshore platforms or underground tunnels where versatility is essential in achieving desired pressure regulation needs.
What are ball valves and butterfly valves?
Ball valves and butterfly valves are both types of piping valve, used to control the flow of liquids or gases in pipes. They both operate by opening and closing a pathway for the fluid.
Ball valves consist of a round ball-shaped body with a hole in its center, which can be rotated 90 degrees between an open position (allowing full flow) and closed position (blocking off flow). Depending on their design, they may also have two additional positions: one allowing just enough passage for pressure equalization, and another partial open setting allowing reduced flow when necessary. Ball valves are most often found at points where frequent activation is not required but regular inspection must occur – primarily because any manual regulating actions require removing the valve from its seat or replacing the entire unit.
Butterfly valves employ flat discs that rotate within a pipeline in-line to reduce or restrict airflow by varying amounts depending on rotation angle. Butterfly Valves can be opened up to allow higher flows through pipelines than ball valves by employing conical seats instead of linear ones, thus creating acceleration of fluids passing over them; however they lack as much control as ball valves due to their limited shutoff characteristics. Butterfly Valves usually come equipped with actuators which enable remote operation via electric signals or other means such as hydraulic pressure changes within pipelines themselves. Compared to Ball Valves, Butterfly Valves cost less upfront but require more maintenance over time due to mechanical wear they incur while in use.
Both types of valve are suitable for different situations involving various control requirements and media conditions, so it is important to consult experts before making decisions related specifically to your needs when selecting either type for industrial applications ranging from food processing equipment lines all the way through gas distribution networks!
Why should I choose butterfly valves?
Butterfly valves are widely used in many industries due to their versatility, ease of installation, affordability, and reliable performance. Butterfly valves are usually smaller and lighter than other types of valves so they can be used where space is limited. They also have tight shutoff capabilities which make them ideal for isolating or regulating flow in a system.
Butterfly valves operate by rotating a disc-shaped element within the valve body that restricts or permits flow depending on the position of the disc relative to an opening passing through the valve body itself. Because butterfly valves are only required to rotate 90 degrees from open to closed position they require less torque than some other types of process control elements making them easy to install and maintain because fewer parts need to be replaced during service life cycles.
The lower friction created between their components provides an effective seal with no seat wear allowing for reduced maintenance costs over time since sealing surfaces do not come into contact once it has been set up correctly at installation time. The cost associated with installing a butterfly valve is significantly lower when compared with other control devices as well due over its lightweight construction and wide variety of size options available for selection based on specific requirements like pressure ratings, temperatures range limits etc..
In addition, most butterfly vales don’t require external power source or compressed air supply as it only needs relatively low actuation torque supplied by manual operators such as levers or gears which makes them suitable for applications where automation isn’t necessary. Lastly, these versatile valves can be found in two different models such as resilient seated (rubber coated) models and metal seated ones offering superior leak tight shut off capabilities when compared with others alternatives available on market today so you can rest assured your process line will remain secure without interruption despite changes in your operating conditions
What is a double eccentric butterfly valve?
A double eccentric butterfly valve is a type of quarter-turn rotary disc valve designed to control the flow of liquids and gases. This particular valve stands out from its other counterparts as it features two separate axes of rotation for the disc or butterfly element. The primary axis is in the center, while a secondary offset axis causes a slight displacement when the valve is opened or closed.
This unique design has several benefits, such as providing fast opening and closing times, reducing wear and tear on the seats, allowing for tighter shutoff capabilities than traditional designs, improved metering performance due to its low turbulence characteristics, virtually eliminating all throttling losses when in full open position, and having extremely low installation costs due to their compact size and weight.
The double eccentric butterfly valves consist of three main parts – body castings (covering/housing), stem shafts (turnable discs), and thrust bearings (connecting elements) that are connected by special screws. When rotated from outside using actuators like gears or electric motors via stem shafts inside the housing connection ring, discs with offset axis open up widely at both ends within few seconds giving an immediate full-flow condition with minimal pressure loses across it which makes these valves ideal for controlling high flow rates applications such as water treatment works systems where precise adjustment isn’t required but quick switchover time is essential..
These valves are suitable for food processing industries where they provide contamination free operation over long service life thanks to their non sticky action feature along with superior sealing ability against any kind of leakage preventing health threats ensuring stability throughout process operations management systems too. Furthermore these types of valves also offer flexibility by allowing engineers to use them in tight spaced places thus making them perfect companion during heavy online maintenance activities consequently helping businesses reduce lifetime cost expenses significantly leading towards increased profitability levels & enhanced customer satisfaction ratings altogether!
What is a high performance butterfly valve?
A high performance butterfly valve is a type of valve that features a disc-shaped closing mechanism which rotates around the stem axis. This allows for quick and reliable shutoff in demanding applications such as oil refineries, chemical plants, power plants, water treatment facilities and more.
High performance butterfly valves are designed to operate with minimal torque requirements for opening or closing the valve. This reduces wear on the components and increases the valves’ service life.
An important feature of these valves is their bidirectional flow characteristic—fluid can be directed in either direction through the valve without any significant pressure drop or flow restriction. This makes them an ideal choice in pipelines that carry fluid at relatively high speeds and require precise control over flow rate at both ends. Additionally, they provide fast shutoff capabilities even when there is fluctuating pressure or temperature changes within the line.