1 1/2" air-operated diaphragm pumps

1 1/2" Air-Operated Double Diaphragm Pumps

Versa-Matic® E4 DN40 Air-Operated Double Diaphragm Pump (AODD)

The Versa-Matic E4 DN40 (1½") Air-Operated Double Diaphragm Pump is one of the most widely used industrial diaphragm pumps for chemical transfer, process fluids, wastewater treatment, and general industrial pumping applications. Delivering flow rates up to 273 LPM, the E4 combines powerful performance, low maintenance requirements, and outstanding operational reliability.

The E4 is available in both plastic and metallic constructions. Plastic models are offered in Polypropylene (PP) and PVDF (Kynar®), while metallic versions are available in Aluminum, 316 Stainless Steel, and additional specialty alloys. This wide material selection allows optimal configuration for aggressive chemicals, abrasive fluids, and demanding industrial applications.

Powered by the proven Elima-Matic® air valve system, the E4 operates reliably without freezing, lubrication, or excessive air consumption. Its bolted and clamped construction provides excellent sealing performance and long service life.

Key Advantages of the Versa-Matic E4

Flow rates up to 273 LPM
DN40 (1½") port size
Self-priming operation
Dry-run capable
Available in plastic and metal versions
Polypropylene and PVDF options

Aluminum and stainless steel versions available
ATEX-certified models available
Excellent chemical resistance
Service-friendly design
Low compressed air consumption
Suitable for industrial and chemical applications

Technical Specifications

Specification	Value
Pump Type	Air-Operated Double Diaphragm Pump (AODD)
Port Size	DN40 / 1½"
Maximum Flow Rate	273 LPM
Maximum Operating Pressure	8.6 bar (125 psi)
Maximum Solids Size	Up to 6 mm
Pump Technology	AODD
Construction	Metal or Plastic
Available Materials	PP, PVDF, Aluminum, Stainless Steel
ATEX Versions	Available
Applications	Chemical, Industrial, Wastewater

Plastic or Metal Version?

Versa-Matic E4 Plastic

Available Materials

Polypropylene (PP)
PVDF (Kynar®)

Ideal For

Acids
Caustics
Aggressive chemicals
Water treatment systems
Electroplating applications
Chemical processing plants

Advantages

Maximum corrosion resistance
Lightweight construction
Excellent chemical compatibility
Perfect for aggressive fluids

Versa-Matic E4 Metal

Available Materials

Aluminum
316 Stainless Steel
Specialty alloys

Ideal For

Solvents
Abrasive media
Process industries
Oil & gas applications
Slurries
General industrial service

Advantages

High mechanical strength
Long service life
Suitable for ATEX environments
Heavy-duty industrial construction

Typical Applications

Chemical transfer
Acid and caustic handling
Water treatment systems
Process industries
Paints and coatings
Solvent transfer
Electroplating operations

Petrochemical plants
Tank farms and storage facilities
Wastewater treatment
Paper manufacturing
Food processing
Mining operations
General industrial pumping

Why Choose the Versa-Matic E4?

The Versa-Matic E4 1½" Air-Operated Double Diaphragm Pump offers the perfect balance of performance, reliability, and application flexibility. Whether pumping aggressive chemicals, wastewater, solvents, paints, slurries, or process fluids, the E4 delivers dependable operation with low maintenance costs.

Its proven Elima-Matic® air distribution system eliminates common air valve freezing and stalling issues while reducing compressed air consumption. Combined with a broad range of material and elastomer options, the E4 can be precisely matched to virtually any industrial fluid transfer application.