Large blocked pipes (up to 12 inches in diameter, or 30.5 cm) can typically be cleared in a single pass with the RPN2420, a new rotating water jet nozzle from NLB Corp. It has five high-cohesive nozzles rotating at up to 500 rpm to maximize the powerful force of 20,000 psi water jets.  The self-propelling nozzle easily clears blockages horizontally, vertically and in tight elbows.The NLB RPN2420 makes pipe cleaning more productive and is field-repairable with a simple kit.  Rotation is variable from 50 rpm to 500 rpm, with full speed control.  The new nozzle operates at pressures up to 20,000 psi (1,400 bar) with flow up to 20 gpm (76 lpm). It features five sapphire nozzles positioned for peak efficiency, one in front and four on the sides.  The body is precision-machined of stainless steel for long life, and weighs just 3 lbs. (1.35 kg).NLB also offers a higher-flow rotating nozzle for pipes with diameters of up to 72 inches (183 cm).The RPN2460 operates at a flow of up to 60 gpm (227 lpm) and pressure of up to 20,000 psi (1,400 bar).