High-Performance Double Offset Butterfly Valve (CVS-250)
The CVS-250 high-performance double offset butterfly valve is built for frequent cycling and medium-to-high pressure service where standard resilient-seated butterfly valves wear out too quickly. Its offset disc geometry reduces seat contact during opening and closing, lowering friction, reducing operating torque, and extending service life—while maintaining reliable tight shut-off.
This design provides a practical middle ground: the compact footprint and cost advantages of a butterfly valve with sealing performance that approaches ball-valve reliability in many applications.
Why choose the CVS-250?
Reduced wear, longer service life
The double offset design pulls the disc away from the seat early in the opening stroke. Less rubbing means less abrasion, less seat damage, and more stable shut-off performance over time.
Reliable tight shut-off under frequent operation
A flexible seat structure supports consistent sealing across pressure fluctuations and cycling duty, helping you maintain tight shut-off without constant adjustment or early seat replacement.
Lower operating torque for automation
Reduced friction translates into smoother actuation and can allow smaller actuators—useful for automated systems where actuator sizing, air consumption, and control stability matter.
API 607 fire-safe option available
For petrochemical and high-safety facilities, an API 607 fire-safe configuration is available to meet more stringent shutdown and risk-control requirements.
Key features
- Double offset high-performance design: Minimizes seat contact during operation to reduce friction and wear.
- Flexible seat for tight shut-off: Maintains stable sealing performance under cycling and changing pressures.
- Reduced operating torque: Supports smoother operation and actuator downsizing in many automated setups.
- Fire-safe option (API 607): Available for higher safety demands.
- Durable body materials:
- Carbon Steel 1.0619+N (EN 10213-2)
- Stainless Steel 1.4408 / 316L (EN 10213-4)
- Wide temperature range: –40°C to +260°C (–40°F to 500°F)
- Wafer-type flange connection: Compact, easy installation between flanges; reduces footprint.
- Extensive size range: 3”–32” (DN80–DN800)
- Wide media compatibility: Refrigerants, cooling/hot water, thermal oil, steam, gases, acids/alkalis, deionized water, pure steam.
Pressure ratings
- PN25 / Class 150
- PN40 / Class 300 Designed for medium-to-high pressure applications where stable shut-off and long cycle life are required.
Typical applications
- Chemical processes (corrosive media selection supported by 316L option)
- Power plants (utility lines, auxiliary systems)
- Heating systems (district heating, hot water, thermal oil loops)
- Oil processing and petrochemical utilities (fire-safe option available)
Ordering notes (what buyers usually confirm)
To select the right configuration, most projects confirm:
- Size (DN/inch) and flange standard
- Pressure class (PN25/PN40 or Class 150/300)
- Media + temperature (to choose CS vs 316L)
- Actuation method (manual/gear, pneumatic, electric) and control requirements
- Whether API 607 fire-safe configuration is required
