Jamesbury Wafer-Sphere high-performance butterfly valves combine unique off-center disc, proprietary seat design and Xtreme sealing technology. Tight, long-lasting sealing, and yet light and low-cost design makes it a good alternative to gate valves and other heavier rotary-type designs.
Jamesbury™ brand valves have always been recognized leaders in valve technology. For nearly 50 years, our unique features have been field-proven to provide trouble-free shut-off in thousands of applications just like yours. This experience allows us to provide a butterfly valve that can lower your costs without risking performance.
Our Wafer-Sphere™ high- performance butterfly valve combines a special off-center disc with proprietary seat designs and revolutionary Xtreme™ sealing technology to provide you with the tightest-sealing, longest-lasting, lowest-cost alternative to gate valves, as well as to other heavier, rotary-type valves.
Since our cycle life is far greater than a traditional butterfly valve, Wafer-Sphere high-performance butterfly valves are often a more cost-effective solution even for applications without high- performance service demands. They are especially suited for applications in grain/corn processing, chemicals, petrochemicals, power, refining, steel, air separation, HVAC and more.
Jamesbury Wafer-Sphere benefits over typical gate valves
• Flexible lip seats and eccentric disc resist erosion and wear.
• Total costs are comparatively lower as valve size increases.
• Simple tightening of the valve gland packing stops leakage.
• Actuators easily accept limit switches and positioners.
• Easy to automate and accessorize
Jamesbury Features
- Driveshaft with trunnion (Model D only) or through shaft
- High flow capacity design (Model D)
- Robust engineering design
- Flexible lip seat technology
- Low emissions stem seal technology
- Fire-tested & cryogenic designs
- High cycle options
- High quality.
Jamesbury Valve Specifications
| Series | 800 series (Model D) | 800 series |
| Size range | 3″ – 12″ (excluding 5″) | 2 ½” – 60” |
| Design | Wafer, lug and double flanged | Wafer or lug |
| Maximum temperature | +260 °C / +500 °F | +260 °C / +500 °F |
| Pressure rating | ASME Class 150 – 300/ PN 10 – 40 | ASME Class 150, 300 & 600 |
| Materials | Carbon steel, Stainless steel, Monel | Carbon steel, Stainless steel, Monel, Hastelloy C |
Wafer-Sphere benefits over typical gate valves
• Significantly less weight.
• Higher pressure ratings.
• Compact design requiring less space.
• Leaktight shut-off over long cycle life.
• Ease of automation.
• Multitude of applications.
• Ease of maintenance.
• Lower overall installed cost.
