Class IV Shut Off
If an application requires the valve to modulate clean fluid, there are several designs that will provide both tight shut-off and control. However, when the media contains solids (i.e. slurry), there is no perfect valve. The designs typically chosen to modulate slurry will provide tight shut-off when brand new, but often leak shortly after being in service.
SlurryFlo control valves provide Class IV shut-off when new and well into their service life. The unique metal-to-metal seating surface overlaps to maintain Class IV, even after substantial wear. A Class IV shut-off isolates 99.99% of the flow.
![SlurryFlo Control Valves have a Class IV Shut off.](https://cdn.prod.website-files.com/5d0cf214409e5b8e08714335/5d0cf214409e5b9ce87143d6_slurryflo-control-valve-class-IV-shut-off.jpg)