Polyethylene & PTFE
chemicals, food and beverage, electro-plating, paper manufacturing
DELLMECO air operated diaphragm (AODD) pumps are suitable for a wide range of applications.
They have a high abrasive resistance and withstand aggressive chemicals including acids, oils, solvents, paints, sludges and even media containing solid particles such as found in waste water. These pumps can also be used for transferring powders.
All the pumps are self-priming and the capacities and pressure can be easily controlled.
This pump is a positive-displacement pump that transfers fluids by means of diaphragms movement operated by compressed air.
The casing in contact with the fluid is made of PE (polyethylene), PE conductive, PTFE (polytetrafluoroethylene), PTFE conductive.
Designed to succeed
– temperatures up to + 120°C
– pressure up to 14 bar
– lubrication-free operation
– low air consumption
– abrasion resistance (PE, PE conductive)
– BSP as standard
– PN10, PN16, ANSI, NPT, JIS, RJT, split manifold configurations available
– connections may rotate 180°
Solid, compact and strong
– housing machined from solid PE, PTFE as well as conductive PE and PTFE
– withstands aggressive chemicals
– gentle pumping action
– viscous media transfer
– completely smooth liquid-side surface (no holes)
– no metal in contact with the media
– materials made to match the application
HOW TO INSTALL DELLMECO PUMPS?
The suction lift rangemis up to 8 meters. This will vary according to construction materials and application parameters. All data are based upon pumping water at 20°C
Our pumps can operate under full submersion. The construction materials must be suitable for the surrounding liquid and the outlet must be positioned above the liquid level.
POSITIVE SUCTION HEAD
As a method for completely emptying holding tanks, clarifiers or similar containers. Optimum inlet pressure should be kept at 0.2-0.3 bar.
RECOMMENDED INSTALLATION GUIDELINES
To reduce piping and pump connections stresses, we recommend flexible connections on both the inlet and outlet pipes and air inlet connections.
For best results DELLMECO recommends installing the pulsation dampener on the discharge side of the pump.
Without pulsation dampeners
With pulsation dampeners
CONNECTION TYPES – PLASTIC SERIES
Standard BSP (inner thread)
This is a standard connection for all plastic and metal pumps.
S – split connections
All pump models can be fitted with split connections (code S). The pump can be converted from a standard double-action air-driven diaphragm pump into a unit with two single chambers. The suction and discharge connection are replaced by a split sleeve with a separate suction and discharge for both chambers. Both chambers are independent and by having them with the same drive it means there can be two media streams in a 1:1 ratio.
Flange connections PN10
This options offers the possibility to use flange connectors according to DIN/PN10. The inlet/outlet flange connections are by thread bushings made of stainless steel. The attached O-rings have to be inserted into the grooves of the manifolds to improve sealing before connecting the pump.
F1 – Flange connection PN10 EPDM
F2 – Flange connection PN 10 NBR
F3 – Flange connection PN10 FEP/FPM
Other types of flange connections
F4 – JIS B2220
F7 – PN10 DIN 2576
F8 – ANSI 150 RF SO
F9 – PN10/16 DIN 2277/2278
Other connections on request.
Polyethylene and PTFE materials
Where ATEX is required
PLASTIC PUMP DIMENSIONS
PLASTIC PUMP CAPACITY
HOW TO SELECT THE PUMP SIZE
1. Enter flow rate and pressure. (example: 50 l/min and 4 bar)
2. Read off the approximate energy requirements in Volume and Pressure. (example: 0.40 Nm3/min at 6 bar)