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Chemistry diaphragm pumps and -pumping systems

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.

Nearly all VACUUBRAND diaphragm pumps and measuring instruments have been approved for ATEX equipment category 3 in the vapor path

  • 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)

Chemistry diaphragm pumps, chemistry vacuum systems and chemistry pumping units

Our chemistry diaphragm pumps are available in a full range of volume flow rates and ultimate vacuum options. Single-stage models reach as much as 70 mbar (absolute) vacuum. Connecting pump heads in series as two-, three- or four-stage pumps improves an ultimate vacuum to as much as 0.6 mbar. Connecting heads in parallel provides higher flow rates. Our line offers combinations that satisfy virtually any laboratory need. 

Nomenclature for VACUUBRAND pumps is built from the following codes designating specific features or components:

M = diaphragm (membrane) pump

E, Z, D, V = number of pump stages
E = single stage, up to 70 mbar
Z = two stages, up to 7 mbar
D = three stages, up to 1.5 mbar
V = four stage, up to 0.6 mbar

C = chemistry design, with fluoropolymer flowpath

NT = labels the series of pumps comprising the New Technology

AK = separator catchpot for inlet or outlet condensates, collects particles and droplets, keeps condensate in vacuum line from flowing into the pump, protecting pump performance and providing additional noise reduction on the pressure side

EK = exhaust vapor (emission) condenser for nearly 100 % solvent recovery in compact design, protecting environment and lab air

TE = dry ice or water ice cooled emission condenser for solvent recovery

PC = "Pumping Unit, Chemistry" - a chemistry pump with vacuum control and solvent recovery

Chemistry vacuum system = a chemistry pump with accessories like inlet catchpot and/or solvent recovery

Chemistry pumping unit = a chemistry vacuum system with vacuum control and solvent recovery

SYNCHRO = pumping unit for simultaneous operation of two independent vacuum applications by a single pump 


 

VACUUBRAND offers chemistry vacuum systems and chemistry pumping units as complete ready-to-connect systems with the best chemistry diaphragm pumps for the desired vacuum range and volume flow rate. You can maximize the vacuum application's efficiency, functioning and environmental protection with the right combination of coordinated accessories. The basic pumps of the different system families are mounted in a space-saving portable system and equipped with the accessories appropriate for particular applications.

The components

AK - (as shown) the separator catchpot for inlet or outlet-side condensates. The inlet (suction-side) separator catchpot collects particles and droplets of liquid. An exhaust (pressure-side) separator collects outlet condensate, keeps condensate from returning to the pump and helps keep the pump whisper quiet.


EK - (as shown) the emission condenser for capturing vapors from the exhaust side of the pump. Made of shielded glass, it is compact, but still highly efficient. It allows for virtually 100% recovery of solvents and protection of the atmosphere.


EK Peltronic® - an electronic emission condenser that operates without cooling water or dry ice. Peltier elements and air cooling afford clean, convenient refrigeration. 

 

TE - a condenser for dry ice or water ice for emissions control and solvent recovery without cooling water supply. 

 

Liquid level sensor: Keeps the collecting catchpots (at AK or EK) from overflowing; supplies warning signals via the electronic vacuum controller with VACUU·BUS® connections, and stops the pumping process if needed. 

 

Manometer: A mechanical vacuum manometer provides trend indication, and approximate vacuum levels on some of our more basic models. 

  • MZ 2C NT +AK+M+D
  • PC 101 NT
  • PC 201 NT

Two vacuum connections on one pumping unit: We have systems and pumping units with a second vacuum connection available for independently operating two processes in parallel with just one pump. Check valves reliably isolate the two different applications from one another. 


Manual flow-control regulation: The flow-control valve is designed for easy adjustment of the effective volume flow rate, and mounted on the inlet separator on some pumping units

 

Product comparison

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Chemistry diaphragm pump
ME 1C

Chemistry diaphragm pump ME 1C
-100 -0.7 0.85 ---------

Chemistry diaphragm pump
ME 2C NT

Chemistry diaphragm pump ME 2C NT
-70 -2.1 2.4 ---------

Chemistry diaphragm pump
ME 4C NT

Chemistry diaphragm pump ME 4C NT
-70 -3.9 4.3 ---------

Chemistry vacuum system
ME 4C NT +2AK

Chemistry vacuum system ME 4C NT +2AK
ME 4C NT 70 -3.9 4.3 -2 -------

Chemistry diaphragm pump
ME 8C NT

Chemistry diaphragm pump ME 8C NT
-70 -7.1 7.8 ---------

Chemistry vacuum system
ME 8C NT +2AK

Chemistry vacuum system ME 8C NT +2AK
ME 8C NT 70 -7.1 7.8 -2 -------

Chemistry diaphragm pump
ME 16C NT

Chemistry diaphragm pump ME 16C NT
-70 100 16.3 18.4 ---------

Chemistry vacuum system
ME 16C NT +EK

Chemistry vacuum system ME 16C NT +EK
ME 16C NT 70 100 16.3 18.4 --------

VARIO® chemistry pump
ME 16C NT
VARIO

VARIO® chemistry pump ME 16C NT VARIO
-70 100 19.3 19.3-------

VARIO® chemistry pumping unit
PC 3016 NT
VARIO

VARIO® chemistry pumping unit PC 3016 NT VARIO
ME 16C NT VARIO 70 100 19.3 19.3-----

Chemistry diaphragm pump
MZ 1C

Chemistry diaphragm pump MZ 1C
-12 20 0.75 0.9 ---------

Chemistry diaphragm pump
MZ 2C NT

Chemistry diaphragm pump MZ 2C NT
-7 12 2.0 2.3 ---------

Chemistry vacuum system
MZ 2C NT +2AK

Chemistry vacuum system MZ 2C NT +2AK
MZ 2C NT 7 12 2.0 2.3 -2 -------

Chemistry vacuum system
MZ 2C NT
+AK+EK

Chemistry vacuum system MZ 2C NT +AK+EK
MZ 2C NT 7 12 2.0 2.3 -------

Chemistry vacuum system
MZ 2C NT
+AK SYNCHRO+EK

Chemistry vacuum system MZ 2C NT +AK SYNCHRO+EK
MZ 2C NT 7 12 2.0 2.3 -2 ----

Chemistry vacuum system
MZ 2C NT
+AK+M+D

Chemistry vacuum system MZ 2C NT +AK+M+D
MZ 2C NT 7 12 2.0 2.3 -------

Chemistry pumping unit
PC 101 NT

Chemistry pumping unit PC 101 NT
MZ 2C NT 7 12 2.0 2.3 ------

Chemistry pumping unit
PC 510 NT

Chemistry pumping unit PC 510 NT
MZ 2C NT 7 12 2.0 2.3 -----

Chemistry pumping unit
PC 511 NT

Chemistry pumping unit PC 511 NT
MZ 2C NT 7 12 2.0 2.3 ---

Chemistry pumping unit
PC 520 NT

Chemistry pumping unit PC 520 NT
MZ 2C NT 7 12 2.0 2.3 ---2 -

VARIO® chemistry diaphragm pump
MZ 2C NT VARIO

VARIO® chemistry diaphragm pump MZ 2C NT VARIO
-7 12 2.8 2.8-------

VARIO® chemistry pumping unit
PC 3002 VARIO

VARIO® chemistry pumping unit PC 3002 VARIO
MZ 2C NT VARIO 7 12 2.8 2.8-----

Chemistry diaphragm pump
MD 1C

Chemistry diaphragm pump MD 1C
-2 4 1.3 1.5 ---------

Chemistry vacuum system
MD 1C +AK+EK

Chemistry vacuum system MD 1C +AK+EK
MD 1C 2 4 1.3 1.5 -------

Chemistry pumping unit
PC 3001 basic

Chemistry pumping unit PC 3001 basic
MD 1C VARIO-SP 2 4 2.0 2.0--------

VARIO® chemistry pumping unit
PC 3001 VARIOpro

VARIO® chemistry pumping unit PC 3001 VARIOpro
MD 1C VARIO-SP 2 4 2.0 2.0-----

VARIO® chemistry pumping unit
PC 3001 VARIOpro
TE

VARIO® chemistry pumping unit PC 3001 VARIOpro TE
MD 1C VARIO-SP 2 4 2.0 2.0-----

VARIO® chemistry pumping unit
PC 3001 VARIOpro
EK Peltronic

VARIO® chemistry pumping unit PC 3001 VARIOpro EK Peltronic
MD 1C VARIO-SP 2 4 2.0 2.0-----

Chemistry diaphragm pump
MD 4C NT

Chemistry diaphragm pump MD 4C NT
-1.5 3 3.4 3.8 ---------

Chemistry diaphragm pump
MD 4CRL NT

Chemistry diaphragm pump MD 4CRL NT
-1.5 -3.4 3.8 ---------

Chemistry vacuum system
MD 4C NT +2AK

Chemistry vacuum system MD 4C NT +2AK
MD 4C NT 1.5 3 3.4 3.8 -2 -------

Chemistry vacuum system
MD 4C NT
+AK+EK

Chemistry vacuum system MD 4C NT +AK+EK
MD 4C NT 1.5 3 3.4 3.8 -------

Chemistry vacuum system
MD 4C NT
+AK SYNCHRO+EK

Chemistry vacuum system MD 4C NT +AK SYNCHRO+EK
MD 4C NT 1.5 3 3.4 3.8 -2 ----

Chemistry pumping unit
PC 201 NT

Chemistry pumping unit PC 201 NT
MD 4C NT 1.5 3 3.4 3.8 ------

Chemistry pumping unit
PC 610 NT

Chemistry pumping unit PC 610 NT
MD 4C NT 1.5 3 3.4 3.8 -----

Chemistry pumping unit
PC 611 NT

Chemistry pumping unit PC 611 NT
MD 4C NT 1.5 3 3.4 3.8 ---

Chemistry pumping unit
PC 620 NT

Chemistry pumping unit PC 620 NT
MD 4C NT 1.5 3 3.4 3.8 ---2 -

VARIO® chemistry diaphragm pump
MD 4C NT VARIO

VARIO® chemistry diaphragm pump MD 4C NT VARIO
-1.5 3 4.6 4.6-------

VARIO® chemistry pumping unit
PC 3004 VARIO

VARIO® chemistry pumping unit PC 3004 VARIO
MD 4C NT VARIO 1.5 3 4.6 4.6-----

Chemistry diaphragm pump
MD 12C NT

Chemistry diaphragm pump MD 12C NT
-2 4 12.0 13.3 ---------

Chemistry vacuum system
MD 12C NT +EK

Chemistry vacuum system MD 12C NT +EK
MD 12C NT 2 4 12.0 13.3 --------

Chemistry vacuum system
MD 12C NT
+AK+EK

Chemistry vacuum system MD 12C NT +AK+EK
MD 12C NT 2 4 12.0 13.3 -------

Chemistry diaphragm pump
MD 12C NT
VARIO

Chemistry diaphragm pump MD 12C NT VARIO
-1.5 3 14.3 14.3-------

VARIO® chemistry pumping unit
PC 3012 NT
VARIO

VARIO® chemistry pumping unit PC 3012 NT VARIO
MD 12C NT VARIO 1.5 3 14.3 14.3-----

VARIO® chemistry pumping unit
PC 3012 NT
VARIO DUO

VARIO® chemistry pumping unit PC 3012 NT VARIO DUO
MD 12C NT VARIO 1.5 3 28 28-----

VARIO® chemistry pumping unit
PC 3003 VARIO

VARIO® chemistry pumping unit PC 3003 VARIO
MV 2C NT VARIO 0.6 1.5 2.8 2.8-----

MV 10C NT

MV 10C NT
-0.9 1.5 9.5 10.7 ---------

Chemistry vacuum system
MV 10C NT +EK

Chemistry vacuum system MV 10C NT +EK
MV 10C NT 0.9 1.5 9.5 10.7 --------

VARIO® chemistry pumping unit
MV 10C NT
VARIO

VARIO® chemistry pumping unit MV 10C NT VARIO
-0.6 1.2 12.8 12.8-------

VARIO® chemistry pumping unit
PC 3010 NT
VARIO

VARIO® chemistry pumping unit PC 3010 NT VARIO
MV 10C NT VARIO 0.6 1.2 12.8 12.8-----

Chemistry diaphragm pump
MZ 2C EX

Chemistry diaphragm pump MZ 2C EX
-12 18 1.9 ----------

Chemistry diaphragm pump
MD 4C EX

Chemistry diaphragm pump MD 4C EX
-3 10 3.7 ----------

VARIO® chemistry diaphragm pump
MD 4C EX VARIO

VARIO® chemistry diaphragm pump MD 4C EX VARIO
-3 10 3.7 3.7--------

Chemistry diaphragm pump
MV 10C EX

Chemistry diaphragm pump MV 10C EX
-2 10 8.1 ----------

Chemistry diaphragm pump
MV 10C EX
VARIO

Chemistry diaphragm pump MV 10C EX VARIO
-2 10 8.1 8.1--------

Chemistry vacuum system
MZ 2C EX
+AK+EK

Chemistry vacuum system MZ 2C EX +AK+EK
MZ 2C EX 12 18 1.9 --------

Chemistry vacuum system
MD 4C EX
+AK+EK

Chemistry vacuum system MD 4C EX +AK+EK
MD 4C EX 3 10 3.7 --------

VARIO® chemistry vacuum system
MD 4C EX
VARIO +AK+EK

VARIO® chemistry vacuum system MD 4C EX VARIO +AK+EK
MD 4C EX VARIO 3 10 3.7 3.7------

VARIO® chemistry diaphragm pump
MV 10C EX
VARIO +AK+EK

VARIO® chemistry diaphragm pump MV 10C EX VARIO +AK+EK
MV 10C EX VARIO 2 10 8.1 8.1------