Almatec E Series Diaphragm Pumps

The E Series diaphragm pumps from Almatec represent the newest generation of plastic, air-operated double-diaphragm (AODD) pumps made in solid design. The E Series is interchangeable with it's predecessor—the A Series—but with more enhancements.

The innovative ring-tightening structure of the E Series provides more safety for the pump. Almatec has also increased the pump's capacity, reduced air consumption, optimized flow patterns, and reduced the noise level. The E Series has a pulsation damper suitable for flange connection that allows for simple, direct installation.


  • E08
  • E25
  • E10
  • E40
  • E15
  • E50

Almanac's E Series diaphragm pumps are designed for liquid and slurry transfer in chemical process applications.

Basic Design

Commonly, 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 an increased permissible bolt torque—an increased pump safety which is assisted by further improvements of construction details.

The flow resistance is reduced via an optimized 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 pumps are proofed against dry running and overloading, and they are self-priming and insensitive to solids.

The pulsation damper can be directly installed on top of the pump. An additional version with flange connection is available.

  • Gentle displacement
  • ATEX conformity in conductive housing models
  • Exterior free of metal
  • Ball or cylinder check valves with identical interior design
  • No drives, no rotating parts, no shaft seals
  • Composite diaphragms with integrated metal core, no diaphragm discs
  • Maintenance and lubrication-free air control system
Housing*PE, PE conductive, PTFE, PTFE conductive
Ball ValvesEPDM, PTFE, NBR, stainless steel
Cylinder ValvesPTFE

*E-Series pumps made of conductive PE and conductive PTFE meet the ATEX requirements of the directive 94/9/EG.

Dimensional Data

E08 E10 E15 E25 E40 E50
Length (in) 3.5 4.3 6.5 8.7 12.0 15.7
Width (in) 5.0 5.8 7.4 10.0 13.9 16.9
Height (in) 5.1 6.7 9.4 12.6 17.0 21.7
Nominal Port Size (NPT) ¼ ½ 1 2
Air Connection (BSP) R ⅛ R ⅛ R ¼ R ¼ R ½ R ½
Weight, PE (lb) - - 15 33 75 146
Weight, PTFE (lb) 4 11 26 64 152 289
Technical Data

E08 E10 E15 E25 E40 E50
Max Solid Particle Size for Ball Valves (in) 0.08 0.12 0.16 0.24 0.35 0.43
Suction Lift, Dry for Cylinder Valves (ftWc)
3.3 6.6 9.8 13.1 16.4 16.4
Suction Lift, Dry for Ball Valves (ftWc) 1.6 3.3 6.6 9.8 13.1 13.1
Suction Lift, Wet (ftWc)
29.5 29.5 31.2 31.2 31.2 31.2
Max Driving and Operating Pressure (psig) 100 100 100 100 100 100
Max Operating Temperature, PE
- - 158ºF 158ºF 158ºF 158ºF
Max Operating Temperature, PTFE 212ºF 212ºF 248ºF 248ºF 248ºF 248ºF
Capacity (gpm) 4 6 15 35 88 160

Product Resources

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