Large-diameter pneumatic high-vacuum gate valves for DN500–DN1250 ISO-F lines. The KYKY GCQ series uses magnetic position sensing and a damped mechanism for large chambers and transfer systems.
Description
KYKY GCQ Large-Diameter High-Vacuum Pneumatic Gate Valves
The large-bore GCQ series is intended for large vacuum equipment, space-environment simulation, accelerators, fusion research and other systems requiring low-impact isolation of a large circular line.
| Models / nominal sizes | GCQ-500B, 630B, 800B, 1000B and 1250B; DN500–DN1250 |
|---|---|
| Standard flange | ISO-F |
| Application pressure range | 1 × 105 to 1 × 10−5 Pa in current KYKY data |
| Specified leak rate | ≤6.7 × 10−10 Pa·m³/s |
| Drive / operating air | Pneumatic / 0.6–0.7 MPa |
| Position indication | Magnetic switches with status indication |
| Bakeout temperature | 150 °C open; 120 °C closed |
| Mounting orientation | Valve body horizontal or cylinder upward |
The earlier source record described this catalog series as rectangular and quoted a 10−6 Pa lower range. KYKY's current GCQ-1250B page describes a large-diameter ISO-F valve and specifies 10−5 Pa. Custom rectangular GCQ-style valves are a separate engineered product.
Confirm the selected DN, mass, support loads, actuator envelope, closure differential, solenoid voltage, sensor logic and seal material. Use engineered lifting and interlocked operation.
