Technical Data                                    TRIVAC D 4 B                                      TRIVAC D 8 B 
                                                                 two-stage                                            two-stage

                                                                50 Hz                     60 Hz                      50 Hz                     60 Hz

                               1）           3
Nominal pumping speed                     m /h （cfm）            4.8 （2.8）                 5.8 （3.4）                  9.7 （5.7）                11.6 （6.9）

                    1）                      3
Pumping speed                             m /h （cfm）            4.2 （2.5）                   5 （3）                     8.5 （5）                  10.2 （6）

Ultimate partial pressure
without gas ballast 1）                   mbar （Torr）       10-4 （0.75 x 10-4）       10-4 （0.75 x 10-4）         10-4 （0.75 x 10-4）         10-4 （0.75 x 10-4）

Ultimate total pressure
without gas ballast 1）                   mbar （Torr）     < 2 x 10-3 （< 1.5 x 10-3） < 2 x 10-3 （< 1.5 x 10-3） < 2 x 10-3 （< 1.5 x 10-3）  < 2 x 10-3 （< 1.5 x 10-3）

Ultimate total pressure
with gas ballast 1）                      mbar （Torr）     < 5 x 10-3 （< 3.8 x 10-3） < 5 x 10-3 （< 3.8 x 10-3） < 5 x 10-3 （< 3.8 x 10-3）  < 5 x 10-3 （< 3.8 x 10-3）

Water vapor tolerance 1）                 mbar （Torr）           30 （22.5）                 30 （22.5）                  25 （18.8）                  25 （18.8）

Water vapor capacity                              g/h              93                        93                        157                        157

Oil filling, min. / max.                         l （qt）  0.3 / 0.8 （0.3 / 0.85）    0.3 / 0.8 （0.3 / 0.85）     0.3 / 0.9 （0.3 / 0.95）    0.3 / 0.9 （0.3 / 0.95）

Noise level 2） to DIN 45 635,

without / with gas ballast                      dB（A）           50 / 52                   50 / 52                    50 / 52                    50 / 52

Admissible ambient temperature                     °C         +12 to +40                +12 to +40                 +12 to +40                +12 to +40
                                                  （°F）       （+54 to +104）             （+54 to +104）             （+54 to +104）              （+54 to +104）

Motor rating 2）                               W （HP）          370 （0.50）                 370 （0.50）                370 （0.50）                 370 （0.50）

Nominal speed                                     rpm             1500                      1800                      1500                       1800

Type of protection 3）                               IP             54                        54                         54                        54

Weight 2）                                     kg （lbs）        18.7 （41.2）               18.7 （41.2）                21.2 （46.7）                21.2 （46.7）

Connections, Intake and Exhaust                    DN            16 KF                     16 KF                      16 KF                     16 KF