Features
No pollution, maintenance free
Chemvak P series pumps are driven by Piston, without the need of lubricant, regular oil changes and maintenance; with no oil pollution.
 
Quiet and low vibration
Driven direct by motor with no additional belt-driven transmission; the quality vibration-proof assembly makes Chemvak P series run at the lowest noise level among all other equivalent pumps.
 
Thermal protection device
Every motor of Chemvak P series pumps has a built-in thermal protection device to shut off the pump automatically when overheated and then resume working when the temperature cools down.
 
Air outlet filter device
Every Chemvak P series compressor is equipped with filter cartridge in air outlet to filter particle, moisture and supply clean air.
 
Application Areas 
* Laboratory environments with high standards on purity levels
* Fermentation tanks
* Bioreactors
* Gas chromatography
* Gas purging devices
* Driving compressed air sources

Specifications

Model	P 420	P 440	P 640	GH20L	GH40L
Power ( W )	95	550	550	750	750
Max. Flow Rate ( L/min )	25	30	60	20	40
Max.pressure ( bar )	5.5	5	8	9.5	9.5
Adjustable pressure range（bar）	-	0 ～ 5	0 ～ 8	0 ～ 9.5	0 ～ 9.5
Motor Speed (rpm)	1450	1380	1380	1450	1450
Volume of tank（L）	-	30	30	20	40
Outlet (mm)	G1/8	8mm	8mm	8mm	8mm
Order No.	167420-22	167440-22	167640-22	16720000-22	16740000-22

Wiggens is a manufacturer of high quality laboratory equipment based in Beijing, China. We started out as distributor for laboratory equipment and soon became an exclusive distributor for most reputable lab equipment manufacturers. After being established as a well-respected and highly successful distributor all around China, we made the successful transition from a mere distributor to producing high level laboratory equipment itself.

Since 2006 we produce top-quality laboratory equipment and, by making use of our well- established distribution network, we were able to quickly establish our products in the domestic market.

Our two brands Wiggens and ChemVak stand for high quality, long durability, and remarkable performance.

Wiggens is your general laboratory companion and provides products that can be used in all kinds of laboratory environments. The Wiggens product range entails different kinds of magnetic stirrers and hot plates. It even provides hot plates with integrated stirring functions for an even heat distribution among your solvents. In addition to the magnetic stirrers Wiggens also provides overhead stirrers with diverse characteristics to perfectly match the solvent used. In addition, Wiggens offers homogenizers of different magnitudes as well as a broad range of shakers, multi- purpose heaters and colony counters. As a new feature in the 2014 range Wiggens now also provides incubators and water baths for full temperature control.

ChemVak on the other hand has been created as a brand specialized in vacuum equipment. Different kinds of vacuum pumps, including chemical-resistant diaphragm pumps and oil-free piston pumps, are complemented by vacuum filtration equipment to form whole filtration systems for a wide range of different applications. In addition, Water-jet aspirator pumps and bio-suction systems are part of the product range. In 2014, a new line of gas generators became part of the ChemVak product line and round out the picture of ChemVak as a specialist for vacuum and gas related operations.