Piduri vaheregulaator Parem/Vasak (Narre) sobib: SAF ERZ, ERZM, ERZT, EU, IERDZW, KERZT, KRS, KRZ, RBM, RS, RSK, RSM, RST, RZ, RZM, RZT, S, WRZ, WRZM, Z; BPW KH, KM, SH, SKH, SKM