â… . Product Introduction
The Pneumatic Ceramic Double Disc Gate Valve is engineered for reliable performance in abrasive and corrosive industrial environments. It uses structural ceramics for its sealing surfaces, delivering exceptional wear, erosion, and corrosion resistance.
The valve features a unique double-disc design that ensures optimal sealing on both sides. When closing, the discs automatically grind and polish against the ceramic seats, enhancing both sealing integrity and wear resistance over time. It can be customized with blow ports and ash hoppers to suit specific applications, making it ideal for dry ash conveying systems and slurry media handling.
Actuated by a fully enclosed, push-rod type pneumatic cylinder, the valve delivers reliable performance and high output torque, even in harsh conditions. It is widely used in power generation, mining, papermaking, and chemical industries for controlling dry dust, water, and steam media, offering benefits such as minimal ash buildup, no clogging, easy maintenance, and an extended service life.
â…¡. Product Features
- Superior Wear Resistance: Structural ceramic sealing surfaces provide outstanding resistance to abrasion, scouring, and corrosion, ensuring a long service life with abrasive media.
- Self-Enhancing Sealing: The double-disc design grinds and polishes against the seats during operation, continuously improving sealing performance and wear resistance.
- Highly Reliable Actuation: The fully enclosed pneumatic cylinder delivers stable, high-torque operation and is built to withstand harsh industrial environments.
- Anti-Clog Design: Optional blow ports and ash hoppers prevent media buildup, ensuring uninterrupted operation in dry ash and slurry applications.
- Low Maintenance: The robust design and wear-resistant materials minimize the need for frequent servicing, reducing operational costs.
- Flexible Customization: The valve can be tailored with additional features like blow ports and ash hoppers to meet specific customer requirements.
- Smooth Operation: The design ensures reliable on-off action with minimal starting load, reducing mechanical stress and wear.
â…¢. Technical Data
Key Specifications
- Nominal Pressure: PN10 ~ PN25
- Applicable Temperature: ≤ 250℃
- Actuator Supply Pressure: 0.6 ~ 0.8 MPa
- Actuation Type: Pneumatic (double-acting)
- Customization: Available with blow ports, ash hoppers, and other features upon request
Material List
| No. | Name | Material | No. | Name | Material |
|---|---|---|---|---|---|
| 1 | Body | WCB | 7 | Stud | 35CrMo |
| 2 | Disc | WCB + Engineering Ceramic | 8 | Nut | 45# Steel |
| 3 | Seat | Engineering Ceramic | 9 | Packing | PTFE |
| 4 | Hood | WCB | 10 | Packing Gland | WCB |
| 5 | Rod | 45# Steel | 11 | Yoke | Q235 |
| 6 | Cover | WCB | 12 | Pneumatic Cylinder | Aluminum Alloy + Seal Compo |
Ⅳ．The main shape and connection size
| DN | L | L1 | PN10(1.0MPa) | ||||||
| D | D1 | D2 | B | f | N-M | Z-d | |||
| 50 | 120 | 200 | 165 | 125 | 102 | 18 | 3 | 4-M16 | 4-18 |
| 65 | 120 | 220 | 185 | 145 | 122 | 18 | 3 | 4-M16 | 4-18 |
| 80 | 120 | 240 | 200 | 160 | 138 | 20 | 3 | 8-M16 | 8-18 |
| 100 | 120 | 280 | 220 | 180 | 158 | 20 | 3 | 8-M16 | 8-18 |
| 125 | 160 | 300 | 250 | 210 | 188 | 22 | 3 | 8-M16 | 8-18 |
| 150 | 160 | 320 | 285 | 240 | 212 | 22 | 3 | 8-M20 | 8-22 |
| 200 | 160 | 350 | 340 | 295 | 268 | 24 | 3 | 8-M20 | 8-22 |
| 250 | 200 | 400 | 395 | 350 | 320 | 26 | 3 | 12-M20 | 12-22 |
| 300 | 200 | 450 | 445 | 400 | 370 | 26 | 4 | 12-M20 | 12-22 |
