Double diaphragm pumps

SAWA Pumpentechnik AG has been the general agency of the German company LUTZ Pumpen GmbH for the whole of Switzerland since 2008. These air-operated pumps are self-priming and safe to run dry. The valve technology ensures blockage-free, infinitely variable operation in every situation and prevents leakage and contamination in the compressed air system. The valves operate oil-free: the working environment is not contaminated. These pumps transport even difficult materials gently and safely. They are suitable for aggressive, abrasive or highly inflammable liquids as well as for media with high viscosity. The pumps are available in polypropylene (PP), polyvinylidene fluoride (PVDF), polyamide (PA), stainless steel and aluminium. The range includes pumps in sizes from 1/4" to 3". Designed for use in the toughest conditions: these pumps operate in all operating situations, even at low pressure and low stroke frequency. ATEX-compliant, they allow the unloading/loading, transfer or dosing of various flammable products.

Double diaphragm pumps for the following fluids

solvents and alcohols such as ethanol, butanol, isopropanol, methanol, toluene, ...
acid, formic acid, chromic acid, nitric acid, phosphoric acid, citric acid, ...
Lye, caustic soda, potassium hydroxide, ...
various chemicals such as lime milk, polymers, ceramic casting compound, refrigerants, plasticizers, ...
various foodstuffs such as oils, juice concentrates, sauces or drinks, ...

Applications of the double diaphragm pumps

for the unloading of tank trucks
for conveying in storage tanks or production plants
to suck in and empty from containers
for the transfer of reactors in process plants or filling plants
for the dosing of chemical substances
for draining galvanic baths
for suctioning off emulsions and cooling lubricants
for pumping waste water

Features of the double diaphragm pumps

oil-free,
low-maintenance,
service-friendly
in plastic or metal
Sizes 1/4" to 3
ATEX compliant
dry self-priming
infinitely variable
safe to run dry
suitable for low-viscosity and viscous media
mobile applicable

Sealing

no shaft sealing / free from dynamic seals

Double diaphragm pumps, Air operated diaphragm pump, Air operated diaphragm pump

Manufacturer, dealer, service provider

Pump types of our double diaphragm pumps

Double diaphragm pump type DMP 1/4" for decanting in laboratories and small plants. Requirements with small flow rate at relatively high pressure. Delivery rate: max. 16 l/min Operating pressure: max. 6.8 bar. Materials: PP, PVDF, or PA.

Double diaphragm pump type DMP 1/2" for 200 l drums, paint circulation and supply, supply of chemicals, solvents, acids and liquid soap. Delivery rate: max. 65 l/min Operating pressure: max. 8.2 bar. Materials: PP, PVDF, PA, aluminium or stainless steel.

Double diaphragm pumps type DMP 2" for paints and varnishes, latex, ceramic casting slip, slurries, polymers, filling and emptying of tank trucks, conveying of food. Delivery rate: max. 719 l/min Operating pressure: max. 8.2 bar. Materials: PP, PVDF, aluminium, stainless steel

Double diaphragm pumps type DMP 3" for paints and varnishes, latex, ceramic casting compound, slurry, polymers, filling and emptying of tank trucks. Delivery rate: max. 954 l/min Operating pressure: max. 8.2 bar. Materials: aluminium, or stainless steel.