Hydro Flow? by Netafim Single dripper stake assemblies will reduce set up time considerably. This 36 or 48 inch assembly will install right where you need it. Dripper assembly uses a 0.5 gph pressure compensating emitter with CNL check vale, 36 or 48 inches of Super Flex Tubing and an angled barbed stake. Minimum operating pressure is 10 psi.