REED A40HP Concrete Pump, Best Value on the Market! REED’s Economical A Series Concrete Pumps (A30, A30HP, A40HP) offer the best horsepower, output volume, and concrete pressure combination for the price.
“True Reverse”. If your line plugs, the pump’s S-Valve can reverse the flow of concrete in the line to relieve the pressure. This can dislodge rock jams quickly and safely. (Ball valve pumps cannot do this!)