manostat

manostat

[′man·ə‚stat]
(engineering)
Fluid-filled, upside-down manometer-type device used to control pressures within an enclosure, as for laboratory analytical distillation systems.
References in periodicals archive ?
For the vacuum experiments, vacuum was applied when the acid number reached [approximately]20 mg KOH/g using a connection with a vacuum pump and a manostat to maintain the pressure constant.
announced the acquisition of the Manostat Pump Products Division from Bel-Art Products.