E-Series Plastic Air-Operated Double Diaphragm Pumps by Almatec
Designed for liquid and slurry transfer in chemical process applications
The Almatec E-Series represents the latest generation of plastic air-operated double diaphragm pumps made in solid design. Compared to the predecessor A-Series the following advantages are especially to mention:
- further increased pump safety due to innovative ring-tightening structure
- increased capacity
- decreased air consumption
- reduced noise level
- optimized flow pattern
- pulsation damper suitable for flange connection
As common, the housing parts are tightened to each other via housing bolts. However, instead of single bolts pressing punctually against the housing, all housing bolts are now tightened against a diaphragm-sized ring per side. This structure results in a more even spreading the housing bolt force and in an increased permissible bolt torque - in the end an increased pump safety which is assisted by further improvements of construction details.
The flow resistance is reduced via an optimised flow pattern to increase the efficiency factor of the pump. Compared to the A-Series, the same air flow achieves a higher fluid flow, respectively less air flow is required from the same fluid flow.
The pulsation damper can still be used an integrated model on top of the pump. However, an additional version with flange connection is available.
For the E-Series pumps are differnet materials available:
- Housing: PE, PE conductive, PTFE, PTFE conductive
- Diaphragms: EPDM, PTFE/EPDM, NBR
- Ball valves: EPDM, PTFE, NBR, stainless steel
- Cylinder valves: PTFE
E-Series pumps made of PE conductive and PTFE conductive meet the ATEX requirements of the directive 94/9/EG. | 
