Burkle - Chemical-Resistant Plastic Pumps

Burkle manufacture filling devices for hazardous liquids, manual samplers for liquids, bulk goods and viscous media, as well as labware, packaging and fittings.

BARREL PUMPS

Barrel pumps are suitable for larger barrels and open containers, these draw in the liquid and then eject it. This family of pumps is characterized by their robust construction with a good pumping capacity and simple handling. Different immersion tube lengths mean that the pumps fit all the usual commercially available containers. Low-mounted suction valves ensure that almost all the residual liquid is removed.

CONTAINER CONNECTIONS

There are no standard connection threads for plastic drums. There are two different ways of attaching the pump to the drum or container. The pump can be screwed onto the existing container thread using a barrel screw joint, possibly in combination with an adapter.

Universal solutions such as conical drum stoppers can also be used. The most suitable pumps are robust industrial pumps made from top-quality materials such as polypropylene (PP) for acids and alkalis or stainless steel for flammable liquids. We always recommend the use of PTFE seals. It is important to check that the material is resistant to the medium to be pumped.

PLASTIC FILLING AIDS

Plastic siphons are a low-priced alternative to mechanical pumps. Siphons are easy-to-use devices for safely filling off liquids from a higher container into a lower one. However, their use with aggressive or flammable liquids cannot be recommended as the pump bellows could be attacked by acids and become brittle.

FILLING OF FLAMMABLE LIQUIDS

Filling off flammable liquids requires special precautionary measures. It is essential that filling devices for flammable liquids are made of conductive materials. It is also vital that any electrostatic charges formed are eliminated completely and without spark formation. Stainless steel barrel pumps meet these requirements when the electrostatic charges are eliminated by using the antistatic set gas-tight filling off product.

GAS-TIGHT BARREL CONNECTORS

With volatile media, such as acetone or ammonia, hazardous vapours are formed in the container. Their evaporation into the surroundings and the risk to the user can be reduced by using a gas-tight barrel connector. With particularly toxic, noxious and readily volatile media, a closed filling system with a gas shuttle pipe is essential. In this method the gases displaced from the container are returned directly into the original container. The health endangering gases remain in the system; the greatest possible degree of safety during filling off is guaranteed.

FOODSTUFF FILLING OFF

If foodstuffs are to be filled off then it must be ensured that the materials used are physiologically harmless. Materials such as stainless steel, polypropylene or PTFE, which also have a neutral taste and odour can be recommended. The pump must also be easy to clean.

PLASTIC PUMPS FOR ACIDS AND ALKALIS

Acids, alkalis and detergents can be safely handled by plastic pumps made from PP or PVDF. Bürkle offers many plastic pumps with both rigid discharge pipes and also with discharge tubing and shut-off valve for filling distant or higher standing containers. When handling corrosive or aggressive liquids the user should take appropriate precautions. Protective clothing such as gloves, goggles, aprons and face masks is essential.

We recognise the health hazard posed by harmful vapours, and the importance of the correct choice of pump. Apart from the type and size of the container, the required pump capacity and the suitability of the pump for the particular medium are important for the choice of the most suitable product. The pump must not only be resistant to the medium to be filled, but in many cases particular occupational safety and environmental protection regulations must also be taken into consideration.

MANUAL LIQUID PUMPS

Manual pumps are an interesting alternative to electric pumps for filling off small amounts because they do not need a power supply and have a good price performance ratio. Bürkle offers a wide range of filling devices for manually removing liquids from containers, canisters, drums and tanks. Pumps that work according to the excess pressure principal are suitable for filling off the required amounts from canisters and small drums up to a capacity of approximately 60L.