The Victaulic Series 761 Vic-300 MasterSeal butterfly valve assembly combines a grooved butterfly valve with a VSI double-acting pneumatic actuator. Available in 3-inch and 4-inch sizes, it provides air-operated flow control for compatible water-truck plumbing and industrial piping systems.
A double-acting actuator uses control air to move the valve in both directions. Confirm the available air supply, control components, and required failure behavior before selecting this assembly.
Key Features
- Victaulic Series 761 Vic-300 MasterSeal valve
- VSI double-acting pneumatic actuator
- Air-powered opening and closing
- Grooved piping connections
- Ductile iron valve body
- Available in 3-inch and 4-inch sizes
- Series 761 valve platform rated from full vacuum through 300 PSI
- Suitable for full-pressure bidirectional dead-end valve service
Product Specifications
| Specification |
Details |
| Valve manufacturer |
Victaulic |
| Actuator manufacturer |
VSI |
| Valve series |
761 Vic-300 MasterSeal |
| Valve type |
Pneumatically actuated grooved butterfly valve |
| Actuator action |
Double acting |
| Operating medium |
Compressed control air |
| Available valve sizes |
3 and 4 inches |
| Valve connection |
Grooved |
| Maximum valve-platform rating |
Up to 300 PSI |
| Valve body |
Ductile iron |
| Valve disc |
Electroless nickel-coated ductile iron |
| Valve stem |
Stainless steel |
| Service capability |
Bidirectional and dead-end valve service |
| Inherent spring-return action |
None—double-acting configuration |
Available Sizes
| Size |
SKU |
Pipe OD |
Valve End-to-End |
Full-Open Cv |
| 3 in. |
0012217 |
3.500 in. |
3.77 in. |
440 |
| 4 in. |
0012218 |
4.500 in. |
4.63 in. |
820 |
Dimensions and Cv values describe the underlying Series 761 valve. Allow additional space for the installed actuator and controls.
Common Applications
| Application |
Typical Function |
| Water truck plumbing |
Air-operated main-line water control |
| Spray systems |
Automated spray-circuit isolation |
| Pump plumbing |
Pneumatic inlet or discharge control |
| Tank outlets |
Remotely operated tank-flow control |
| Industrial piping |
Automated isolation in compatible grooved systems |
Selection Requirements
| Item to Confirm |
Why It Matters |
| Control-air pressure |
Must meet the installed actuator’s operating requirements |
| Seat material |
Must be compatible with the fluid and temperature |
| Failure position |
Double-acting actuators do not provide inherent spring-return action |
| Solenoid and controls |
Accessories must match the vehicle or control system |
| Available clearance |
Actuator increases the assembly’s overall dimensions |
Selection note: Confirm the installed actuator model, control-air requirements, seat material, fluid compatibility, and control accessories before ordering. Follow current Victaulic and VSI installation instructions.
