Three-Eccentric Hard Sealed Pneumatic Flange Butterfly Valve

• Customization: Available
• Media: Water
• Driving Mode: Pneumatic
• Model NO.: Q643H-16C
• Connection Form: Flange
• Structure: Three-Eccentric Sealing
• Seal Form: Force Sealed
• Valve Stem: Normal
• Work Pressure: Low Pressure (Pn<1.6mpa)
• Working Temperature: Medium Temperature (120°C<T<450°C)
• Material of Seal Surface: Metal Hard Sealed
• Valve Body: Casting
• Standard: GB/DIN/En/API/JIS
• Application: Industrial Usage, Water Industrial Usage, Food Beverage Usage
• Actuator Model: At75D-At240d
• Action: Double-Acting
• Air Pressure: 0.3-0.8MPa
• Air Supply Port: G1/4" or G1/2"
• Body Material: Wcb
• Disc Material: SS304/CF8
• Stem Material: Ss410
• Working Pressure: 1.6MPa
• Seal Material: Metal Sealing
• Transport Package: Carton Box/Plywood
• Specification: DN50-300
• Trademark: KGSY
• Origin: Made in China
• HS Code: 7307210000
• Production Capacity: 10000pieces/Year

Product Description

 

Product Description

A "Three-Eccentric Hard Sealed Pneumatic Flange Butterfly Valve" is a sophisticated industrial valve designed for precise flow control and high durability under challenging conditions:

1. Three-Eccentric Design:

   • Eccentricity: In valve terminology, "eccentric" refers to the offset between the axis of the shaft and the centerline of the disc or seat. In a three-eccentric butterfly valve, there are three offsets: the shaft is offset both behind the disc and from the centerline of the pipe to reduce wear and tear on the valve seal as it opens and closes; and an additional offset in the angle of the seating surface. This triple offset effectively eliminates the friction between the disc and seat during operation, enhancing the valve's lifespan and performance.
   • Benefits: The three-eccentric design minimizes wear and provides a tighter seal, which allows the valve to function effectively under extreme conditions of temperature and pressure. It also enables the valve to achieve a bi-directional seal, making it suitable for complex flow systems.

2. Hard Sealed:

   • Sealing: 'Hard sealed' refers to the use of durable materials such as metal for the sealing surfaces, as opposed to softer sealing materials like rubber. Metal-to-metal seals are crucial in high-temperature and high-pressure environments where softer materials would fail.
   • Durability and Performance: The hard sealing surfaces withstand extreme conditions, contributing to the valve's ability to handle corrosive fluids, high temperatures, and abrasive materials without significant degradation.

3. Pneumatic Flange Butterfly Valve:

   • Pneumatic Actuator: This type of actuator uses compressed air to open or close the valve, offering rapid and reliable automation. Pneumatic actuators are particularly favored in hazardous or explosive environments because they do not require electricity and reduce the risk of ignition.
   • Flange Connection: The valve features flanged ends that facilitate easy installation and integration into existing piping systems. Flanges provide a strong, secure connection that is ideal for both permanent and temporary setups in large-scale industrial applications.

4. Materials and Construction:

   • Typically, these valves are made from robust materials like stainless steel or specialized alloys that offer resistance to corrosion and physical stress. The choice of material depends on the specific requirements of the application, including exposure to corrosive fluids or extreme temperatures.

5. Applications:

   • Power Generation: Used in power plants for controlling the flow of steam and other hot gases.
   • Oil and Gas Industry: Handles the control and isolation of oil and natural gas in both processing and transport phases.
   • Chemical Processing: Ideal for managing aggressive and corrosive fluids within chemical production lines.
   • HVAC Systems: Utilized in large commercial and industrial HVAC systems where precise control over air flow is necessary.

6. Advantages:

   • High Performance: Provides exceptional leak tightness and long-term reliability under demanding operational conditions.
   • Versatility: Suitable for a wide range of temperatures and pressures, and capable of handling various types of media, including gases, liquids, and semi-solids.
   • Low Maintenance: The three-eccentric design reduces wear on sealing components, thus extending maintenance intervals and reducing operational costs.

In summary, the "Three-Eccentric Hard Sealed Pneumatic Flange Butterfly Valve" offers high durability, exceptional sealing capabilities, and precise control, making it an excellent choice for complex and demanding industrial applications where longevity and performance are critical.

 

PRODUCT SPECIFICATIONS

Nominal diameter			DN50-350
Pressure range			0-1.0mpa
Working temp			-20ºC~+150ºC
Body material			ductile iron
Sealing material			rubber PTFE
Actuator material			cast aluminum alloy
Actuator model			AT63D-AT240D
Air pressure			2~8bar
Action			double acting
Appliable medium			drinking water,sewage,high purity water,sea water,air

 

Q & A:

1.What products are produced by your factory?
Answer: We, KGSY is a real factory, we produce all kinds of pneuamtic valve accessories, like air actuator, limit switch box, solednoid valve, air filter, declutch gear operator, electro-pneumatic positioner, adapters, etc.
We also assemble whole set pneuamtic ball valves & butterfly valves. 

2.What international approval have you got?
  Answer: At present, we have been approved with CCC, CE, IECEx, ATEX, UKCA, EAC certificate.

3.How long is the sample time?
Answer: Usually it will take 7 working days to make a sample.

4.How long is the lead time of a mass order?
Answer: We promise 25 days for each order and nearly 99.3% orders will be finished on schedule.

5.What's your strength?
Answer: We are a real factory, we have our own R&D team and control the quanlity and production time absolutly . 
At the same time, we own the advantage of a trading company, which includes efficient comunication and strong ability gathering goods on the primese of specialty.