Cast Pneumatic Wafer-Type Butterfly Valve
Strictly engineered in compliance with GB/T 12238, GB/T 12224, and GB/T 13927 pressure testing standards, this cast pneumatic wafer-type butterfly valve is a high-performance solution designed for rapid cycling and automated flow regulation within sophisticated industrial process networks. The valve body is precision-cast from high-grade WCB steel, featuring a structural design optimized via Finite Element Analysis (FEA) to ensure exceptional mechanical integrity while the ultra-short wafer configuration significantly minimizes pipeline loading and installation footprint. Its core sealing mechanism incorporates a precision-ground, streamlined disc paired with a high-performance vulcanized resilient seat (such as EPDM, PTFE, or Viton), utilizing an interference-fit sealing principle to achieve robust, bi-directional bubble-tight shut-off even under fluctuating pressure differentials. Equipped with an ISO 5211 direct mounting pad, the valve is integrated with a high-efficiency double-piston rack-and-pinion pneumatic actuator, characterized by its rapid response time, constant torque output, and extended cycle life. Through standardized NAMUR interfaces, it seamlessly accommodates solenoid valves, limit switches, and air filter regulators, enabling millisecond-level remote logic control and real-time position feedback. Furthermore, the hardened anti-blowout stem combined with a multi-layer self-compensating shaft sealing system effectively eliminates external leakage risks, ensuring superior operational reliability and minimal life-cycle maintenance costs across demanding sectors such as petrochemicals, power generation, water treatment, and HVAC systems.
| Description | Value | Unit |
| Nominal Pressure (PN) | 16 | – |
| DN | 50–400 | mm |
| Test Pressure: Shell Test Pressure | 2.4 | MPa |
| Test Pressure: Seal Test Pressure | 1.76 | MPa |
| Test Pressure: Air Test Pressure | 0.6 | MPa |
| Suitable Temp. | ≤ 120 | ℃ |
| Suitable Medium | Water, Steam, Oil (W.A.O) | – |
Structural Characteristics of
Equipped with a high-performance aluminum pneumatic actuator, the valve utilizes compressed air to achieve near-instantaneous opening and closing. This rapid response is critical for emergency shut-off or fast flow modulation in automated production lines, significantly enhancing system synchronization.
The classic wafer-style body features a face-to-face dimension much shorter than traditional flanged valves, saving substantial pipeline space and reducing overall weight. This makes it ideal for containerized water treatment units or cramped industrial pump rooms, effectively lowering support loads and material costs.
The core component in contact with the media is a precision-cast CF8 (304) stainless steel disc, offering superior erosion and corrosion resistance. In municipal water supply or industrial cooling loops, the stainless disc prevents media contamination from rust and extends the valve’s lifespan under high-velocity flow.
The valve comes pre-assembled with a full control suite, including a solenoid valve and filter-regulator, with all pneumatic tubing connected. This integrated solution eliminates tedious on-site component selection and commissioning, ensuring rapid and reliable deployment in smart factory networks.
Featuring a high-quality vulcanized rubber seat, the valve creates a tight circumferential seal upon closure, supporting bi-directional pressure shut-off. Whether in low-pressure ventilation or full-load liquid piping, this structure provides reliable bubble-tight closure, effectively preventing internal leakage.
- This Pneumatic Wafer Butterfly Valve is a “master of efficiency” in modern fluid engineering. By perfectly combining a compact mechanical structure with responsive pneumatic control, it offers an economical yet highly reliable automated shut-off solution for environmental projects, HVAC systems, and general industrial processes
Main Components Material
| No. | Part | Materials |
|---|---|---|
| 6 | Pneumatic Actuator | |
| 5 | Bushing | Brass |
| 4 | Disc | QT450-10 |
| 3 | Stem | 2Cr13 |
| 2 | Seat | EPDM |
| 1 | Body | QT450-10 |
Class 150LB Main Connection Dimensions
| DN | L | K | n-Ø |
|---|---|---|---|
| 50 | 43 | 125 | 4-Ø18 |
| 65 | 46 | 145 | 4-Ø18 |
| 80 | 46 | 160 | 4-Ø18 |
| 100 | 52 | 180 | 4-Ø18 |
| 125 | 56 | 210 | 4-Ø18 |
| 150 | 56 | 240 | 4-Ø22 |
| 200 | 60 | 295 | 4-Ø22 |
| 250 | 68 | 355 | 4-Ø26 |
| 300 | 78 | 410 | 4-Ø26 |
| 350 | 78 | 470 | 4-Ø26 |
| 400 | 102 | 525 | 4-Ø30 |
Why Choose YAYE
