Lub nozzle fitting yog hom siphon, cov kua ua kua tsis tas yuav tsum tau tsim kom nruj, lub nozzle nqus cov kua los ntawm lub ntim rau hauv lub nozzle los ntawm Venturi effect, sib tov nrog huab cua compressed thiab tshuaj tsuag nws tawm. No series ntawm nozzles txhawb kev hloov kho, thov hu rau peb.