The Valtek Valdisk valve is a high-performance butterfly control valve. Its double-offset shaft provides eccentric-cammed disc rotation to lift it out of the seat, thus immediately eliminating seat friction, to improve throttling control and reduce seat wear. A one-piece splined shaft connected to a clamped actuator lever provides excellent throttling control. Its soft seating arrangement is designed for bubble-tight shutoff while maintaining low breakout torque.
Additional information
| Valve Size | 2" to 60" |
|---|---|
| Pressure Class Standard | ASME B16.34 |
| Pressure Class Range | Class 150, 300, 600 |
| Body | Wafer, Double-Flanged |
| End Connections | Lugged, Integral Flange, Flangeless |
| Face-to-Face Standard | API 609 |
| Bonnet | Body Integral |
| Packing | Standard, Twin Seal, Vacuum Seal, Fugitive Emissions, Live-Loaded, Fire-Safe |
| Configuration | Double-Offset |
| Trim | Contoured Eccentric-Cammed Disc |
| Trim Characteristics | Linear |
| Seating | Metal-to-Metal & Soft |
| Shut-Off Classification | ANSI FCI 70-2 Class IV, V, VI |
Features & Benefits
- Valdisk design for high-cycle applications, such as pressure swing adsorption (PSA) and air separation that experience more than 200,000 cycles per year.
- The disc rotates out of seat immediately, eliminating seat friction, to improve throttling control and reduce seat wear
- A one-piece, splined shaft end, combined with actuator lever clamp, eliminates lost motion between shaft and actuator to improve throttling control
- Tapered shaft to disc pins provide tight connections for excellent control without requiring the shaft to be drilled
- Inherently linear flow characteristic provides good control over the entire flow range
- Soft seat (Class VI) and metal seat (Class IV) provide reliable long-life, shut-off capability
- Packing provides low emissions for a variety of applications, complying with industry standards
Standards & Certifications
| Certifications | Canadian Registration Number (CRN) |
|---|---|
| Safety Integrity Level (SIL) 3 Capable | |
| PED Directive 97/23/EC | |
| Design Standards | API 609 – Butterfly Valves: Double-Flanged, Lug and Wafer |
| ASME B16.47 – Large Diameter Steel Flanges | |
| ASME B16.5 – Pipe Flanges & Flanged Fittings | |
| ASME B16.10 – Face to Face & End Dimenions of Valves | |
| ASME B16.25 – Buttwelding Ends | |
| ASME B16.34 – Valve Flanged, Threaded, and Welding End | |
| ASME SA Materials | |
| ASTM A Materials | |
| Quality | IS0 9001:2008 |
| ATEX QAN | |
| IECEX QAR |
