Chemistry Diaphragm Pumps

Typical applications for chemistry diaphragm pumps include evacuating chemically aggressive gases and vapors from such equipment as rotary evaporators, vacuum drying cabinets and centrifugal concentrators. Chemistry diaphragm pumps from VACUUBRAND feature uncompromising chemistry designs. Their construction with fluoropolymers makes them very resistant to chemical vapors from inlet to exhaust and very tolerant to condensates. Our two-, three- and four-stage pumps also have a gas ballast valve that provides continuous purge with minimal impact on ultimate vacuum when working with condensable vapors. Pumping chambers are hermetically separated from the drive system ensuring long lifetimes of mechanical parts. Most importantly, diaphragm pumps are oil-free, for vastly reduced service demands compared with oil-sealed pumps. They eliminate the cost of water and its contamination well-known from water-jet aspirators, and the waste-oil disposal of rotary vane pumps.

PTFE sandwich diaphragms and valves made of perfluoro elastomer or PTFE

Internal tubing and fittings made of PTFE/ETFE/ECTFE compounds

Exceptional diaphragm lifetimes with ultra-durable PTFE sandwich design

Head cover and clamping disc made of fluoro compounds with stability core for unsurpassed long-term performance

Very long service intervals for low lifetime cost-of-ownership

patented new drive system for extra quiet, ultra-low-vibration operation (NT)

Patented new valve mounting system to simplify service access (NT)

Smooth surfaces for easy cleaning (NT)

New sealing system provides reduced leakage rates for improved ultimate vacuum (NT)


ATEX Pumps

In explosive areas, only operating materials with ATEX conformity may be used. VACUUBRAND offers chemistry diaphragm pumps and pumping units category 2 (for example, for zone 1) with ATEX conformity. Thanks to their high degree of chemical resistance, their oil-free operation, the absence of sliding surfaces, as well as the hermetic seal of the pump chamber against the drive zone, chemistry diaphragm pumps offer excellent conditions for avoiding sources of ignition. Chemistry diaphragm pumps with a separator (AK) and emission condenser (EK) for solvent recovery represent proven configurations for effectively reducing workloads and they protect the environment.

Full advantage of ATEX chemistry diaphragm pumps with separator AK and emission condenser EK

VARIO®: short process times due to hysteresis-free VARIO® vacuum control

VARIO®: VARIO®-pump operates on demand only as fast as necessary – minimal power consumption, extended maintenance intervals, silent operation

VARIO®: Vacuum controller CVC 3000 (optional) for precise vacuum control and fully automatic processes

complete system accessories I/O module, supply / isolation amplifier and ATEX vacuum sensor - from one source