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3-Way Mixing Valve and Evaporator

  • Accurately controlled gas/liquid mixture
  • Fast response
  • High reproducibility
  • Very stable vapour flow

3-way Mixing Valve and Evaporator

Bronkhorst® model W-303B CEM 3-way Mixing Valve and Evaporator is suited for precise vapour flow delivery, composed by mixing up to 1200 g/h H2O (3200 g/h IPA) with max. 100 ln/min of carrier gas at operating pressures between vacuum and 100 bar. The temperature controlled mixing device is used in combination with  a (thermal or Coriolis) liquid flow meter and an MFC for carrier gas, together forming a Controlled Evaporation and Mixing (CEM) System.

Technical specifications


Max. Kv-value

6,6 x 10-2

Max. heating temperature



Mechanical /Electrical specifications

Material (wetted parts)

Stainless steel 316L or comparable

Pressure rating

100 bar(a)

Max. ΔP

5...40 bar (depends on Kv-value; contact your distributor for details)

Process connections

Gas and liquid inlet: compression type or face seal couplings;
Vapour outlet: 1/4" tube (other options on request);
Purge connection: 1/8" OD or 1/8" face seal




Kalrez®; other on request

Protection class


Power supply

Mixing valve: +/-15...24 Vdc;
Heater: 110-120 Vac or 220-240 Vac

Power consumption

Mixing valve: 4 W (max.);
Heater: 1375 W (nominal)

Heater capacity

1000 W

Connector 1 (temperature & safety)

Amphenol 6-pin male

Connector 2 (heater)

Amphenol 5-pin male