| | | -Lacereresepotconstrui: - pompe duble HP 43; HP 42; HP 41 sau pompe duble HPR 43; HPR 42; HPR 41 (cu treapta a doua din m rimi dimensionale inferioare) - pompe cu alte volume geometrice | | -At request, can be manufactured: - double gear pumps HP 43; HP 42; HP 41 or double gear pumps HPR 43; HPR 42; HPR 41 (with a lower displacement second stage pump) - pumps with other displacements. | | |
| | | Nota: - Pn: presiunea nominala la care se garanteaza functionarea continua, durabilitatea i randamentul volumic. - Pmax: presiunea maxima la care poate lucra pompa intermitent (max. 20 s); presiunea medie nu va depa i presiunea nominala. - Vārfurile de presiune, de comutare, pot depa i presiunea maxima cu 20 bar. - Randamentele volumice r|vn se garanteaza in conditii nominale i la o vāscozitate a uleiului de 30....40 mm2/s. - Caracteristicile de mai sus sunt valabile i pentru pompele duble (la fiecare treapta in parte). - Pentru n>1500 rot/min, P<36 500 000 / (Vg x nef) - Functionarea pompelor la turatii ridicate, fara cavitatie, este posibila numai cu o aspiratie suficient de larga. - Presiunea de aspiratie nu va scadea sub 0.7 bar abs. | | Note: - Pn: nominal pressure for which, continuous running, life time and volumetric efficiency are guaranted. - Pmax: maximum pressure at which the pumps can intermittently work (max. 20 s); average pressure should be lower than Pn. - Pressure peaks, in comutations can be 20 bar higher as Pmax. - Volumetric efficiency r\ vn is guaranted in nominal conditions and viscosity 30....40 mm2/s. - The characteristics mentioned above are valid also for double pumps (for every stage). - For n>1500 rev/min, P<36 500 000 / (Vg x nef) - Functioning at high speed, without cavitation, it is possible only with an enough large inlet. - The inlet pressure should not decrease under 0.7 bar absolute. | | |