delta diaphragm metering pump
No longer available for reference only! Replaced by the gamma/ XL
The delta is a solenoid driven, diaphragm metering pump. It covers a feed range from 2.0 gph at 363 psi (8 l/h at 25 bar) to 20 gph at 29 psi (75 l/h at 2 bar). Due to its wide adjustment range – both the stroke length and the stroke rate can be varied – this output range is covered by seven different pump sizes. This reduces the variety of replacement parts and therefore the operating costs. The pumps are just as easy to operate as the popular ProMinent® Gamma/ L and Sigma series.
ProMinent® offers the revolutionary new optoDrive for the first time in the delta series. The optoDrive allows the suction & discharge stroke duration to be adjusted. This provides a turndown ratio of 36,000:1.
Benefits
- Certified to NSF/ANSI 61 (acrylic or PVDF liquid ends)
- Adjustable suction and discharge stroke duration delivers a more even flow
- optoDrive uses the pump energy profile to indicate over-pressure and loss of prime without the need for an external flow monitor
- Auto-degassing design is ideal for off-gassing chemicals
- Turndown ratio makes it possible to reduce the number of pump models required for standardization
- HV liquid ends for higher viscosity media
- pH, ORP or Chlorine control module
- Interface for profibus or CANopen (optional)
- Diaphragm rupture detection and signalling (optional)
Features
- delta built-in auto-degassing technology
- Options to de-gas upon loss of pressure and/or periodically for prevention
- Self detection and correction of airlock (loss of pressure)
- Increased safety through the automatic detection of blocked or broken discharge lines
- Eliminates the need to dilute hypochlorite for small water treatment systems.
- Increased pump accuracy through automatic correction of flow over a wide variation of backpressure
- PTFE-coated dosing diaphragm
- Dosing repeatability ± 2% when used in accordance with the operating instructions
- Permissible ambient temperature –10°C to +45°C
- Average power consumption 78 W
- Protection IP65, insulation class F
Applications
- Emulsion polymer feed
- Process applications requiring a large turndown
- Water and Wastewater treatment
- Cooling tower and Boilers
Technical Data
Capacity Data
| delta | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pump Version | Capacity at Maximum Backpressure | strokes/ min. | Pre-primed suct. lift | Suction/Discharge connectors | Shipping weights (higher weights are for SST) | |||||
| gph | (l/h) | psig | (bar) | ft. | (m) | in. | lbs. | (kg) | ||
| 2508 | 2 | (7.5) | 363 | (25) | 200 | 19.6 | (5) | 3/8” x 1/2” (1/2” MNPT dis. only) | 22-24 | (10-11) |
| 1608 | 2.1 | (7.8) | 232 | (16) | 200 | 16.4 | (5) | 3/8” x 1/4” | 22-24 | (10-11) |
| 1612 | 3 | (11.3) | 232 | (16) | 200 | 19.6 | (6) | 3/8” x 1/4” | 22-24 | (10-11) |
| 1020 | 5.04 | (19.1) | 145 | (10) | 200 | 16.4 | (5) | 1/2” x 3/8” | 22-24 | (10-11) |
| 0730 | 7.7 | (29.2) | 102 | (7) | 200 | 16.4 | (5) | 1/2” x 3/8” | 22-24 | (10-11) |
| 0450 | 12.9 | (49.0) | 58 | (4) | 200 | 9.8 | (3) | 5/8” ID hose barb standard* | 22-24 | (10-11) |
| 0280 | 19.8 | (75.0) | 29 | (2) | 200 | 6.7 | (2) | 5/8” ID hose barb standard* | 22-24 | (10-11) |
| * (1/2” MNPT optional) | ||||||||||
Liquid end materials in contact with media
| Version | Liquid End | Suction/Discharge valves | Seals | Valve balls | Diaphragm* |
|---|---|---|---|---|---|
| *PVT | *PVDF | *PVDF | PTFE | Ceramic | PTFE |
| SST | 316 Stainless steel | 316 Stainless Steel | PTFE | Ceramic | PTFE |
| NPE | Acrylic | PVC | EPDM | Ceramic | PTFE |
| NPB | Acrylic | PVC | Viton® | Ceramic | PTFE |
| *Highly compatible material suitable for most fluids. | |||||
| Viton® is a registered trademark of DuPont Dow Elastomers. | |||||