Model Number: The Pump-on Wash Nozzle Key Specifications/Special Features: The pump-on wash nozzle allows for washing debris, such as sand and solids while circulating the well bore.The valve is active with a check valve. The valve automatically opens when the pump pressure increases. Adversely, the valve automatically shut down when the pump pressure stop. Especially it is suitable for high pressure and flow rate of the well.FeatureMay be run with a variety of fluidscan connect with drilling motor, completion tools and work-over toolsSimple structure, convenient operation GaugeOD （mm）Overall length （mm）Thread connection 2” 50.8 350 1 1/2” AMMT.BOX 2 7/8” 73.0 370 2 3/8” PAC.BOX 3 1/2” 88.9 420 2 7/8” PAC.BOX