Durapipe 2-Way PVCu Pneumatic Actuated VKD Ball Valve Threaded
Technical Specification
- Manufacturers:
- Valve: Durapipe
- Actuator: Prisma
- Materials:
- Valve: Unplasticised Polyvinyl Chloride (PVCu)
- Valve Seals: Ethylene Propylene Diene Monomer Rubber (EPDM)
- Actuator Housing: Polyamide
- Sizes: 1/2" to 2"
- Pressure rating: 16 bar at 20°C
- Temperature range: 5°C to 60°C
- Power Supply: 24-240V AC/DC
- Connection type: Female Threaded Union Ends
- Features: IP-67 Protective Housing
- Approvals:
- Valve: WRAS
- Actuator: SIL3, ATEX, CE Marked
Description
This pneumatically actuated ball valve is designed for demanding industrial applications where rapid, reliable and fail-safe valve operation is required. Combining Durapipe’s high-performance VKD DualBlock valve body with a robust pneumatic actuator from Prisma, this assembly delivers dependable automated isolation even in harsh or safety-critical environments.
The Threaded Durapipe VKD Ball Valve is manufactured from PVCu and incorporates patented DualBlock and Seat Stop technologies. DualBlock mechanically locks the union nuts once tightened, preventing loosening caused by vibration, pressure variation or thermal expansion. The Seat Stop system allows fine adjustment of the ball seats and compensation for axial pipe loads without draining the system, making it ideal for continuous or critical processes. EPDM seals ensure smooth operation, excellent chemical resistance and long service life, while threaded union ends allow for a more flexible installation with full demountability for maintenance.
The Prisma Pneumatic Actuator features a lightweight, corrosion-resistant design with a fully protective IP67 housing and is approved to SIL3 and ATEX standards. Spring return operation provides a defined fail-safe position on loss of air supply, while double-acting variants are available on request. Designed specifically for use with thermoplastic valves, the actuator is silicone-free and can be fitted with a wide range of control and feedback accessories, including solenoid valves, positioners and limit switches.
This product is delivered fully assembled, made up from the following parts:
- 1x Durapipe 2-Way VKD Ball Valve Threaded
- 1x Prisma Pneumatic Actuator (Model dependent on size)
- 1x FIP EasyFit Mounting Kit
Key Features & Benefits
- Pneumatic actuation with a fail-safe option: Spring return actuator provides controlled valve position on air failure.
- Durapipe VKD valve body: High-performance double union design for demanding industrial applications.
- DualBlock locking technology: Prevents union nut loosening under vibration or thermal movement.
- Seat Stop system: Enables micro-adjustment of ball seats and axial load compensation without draining the system.
- PVCu construction: Lightweight, corrosion-resistant and suitable for aggressive media.
- WRAS and DWI approved valve: Suitable for potable water and regulated installations.
- IP67 actuator housing: Fully protected against dust and water ingress.
- Safety and compliance: SIL3, ATEX and CE marked actuator for safety-critical environments.
Actuator Specifications
| Model Number | PPWS | PP00S | PP10S |
| Size | 1/2" and 3/4" | 1" to 1 1/2" | 2" |
| Actuator Type | Spring Return | Spring Return | Spring Return |
| Max Operational Torque | 17Nm to 165Nm at 6 bar | 17Nm to 165Nm at 6 bar | 17Nm to 165Nm at 6 bar |
| Operating Temperature | -32°C to 90°C | -32°C to 90°C | -32°C to 90°C |
| Air Supply | Up to 8 bar | Up to 8 bar | Up to 8 bar |
| Protection Rating | IP-67 | IP-67 | IP-67 |
| Cycle Time w/o Resistant Torque at 6 bar | 0.15 seconds | 0.2 seconds | 0.3 seconds |
| Rotation Angle | 0° to 90° | 0° to 90° | 0° to 90° |
| Drive Type | Stainless Steel 8-Point Star | Stainless Steel 8-Point Star | Stainless Steel 8-Point Star |
| Star Size | 11mm | 14mm | 17mm |
| Weight | 0.55kg | 1kg | 2.03kg |
Double-acting actuators are available upon request; the actuator appearance may differ depending on the size ordered.
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