Brandt 3 × 10-inch desander

After the shakers, a desander takes out sand-size solids the screens let through. Fluid is pumped into hydrocyclones. Heavier solids spin out the bottom. Cleaner fluid comes out the top and goes on to the desilter. Ten-inch cones are the sand-removal size. Four-inch cones are the silt-removal size.

A bank of three 10-inch cones is a common package on a land rig mud system, sized to the pit pumps that feed it. “3 × 10-inch” describes that bank. It is not a single Brandt model number. Capacity depends on feed pressure, cone condition, and how the underflow is set. None of those are in the cone count.

A 20-cone bank of 4-inch cones is a desilter, and it belongs downstream of the desander. A mud cleaner is a desilter or desander mounted over a fine-screen shaker. Count cones and measure them. A two-cone manifold is a different package from a three-cone manifold even if every cone is 10 inches.

Count the cones, look at each apex and vortex finder, and ask for the feed-pump horsepower and the manifold size. Ask whether a shaker sits under the cones. A painted manifold with damaged cones will not desand.