No other sequencing valve combines the lowest cost per yard maintenance costs and ease of rebuilding as the Rock Valve. As the most accessible valve in the industry, the Rock Valve is an operators friend, shortening clean-up time while using less water. A patented pressure spring creates a tight seal at the cutting ring, ideal for high-pressure pumping. And ease of servicing combined with fewer replacement parts increases pump availability for a higher return on your investment. With over thirty years of development and field-tested toughness, the Rock Valve remains the most effective concrete valve available. SP models (SP 500 to SP 1250) benefit from the Long Rock that provides better filling efficiency for the material cylinders and a standard hopper agitator.

• High Durability