Multi-layer diaphragm pumps of type RF409.2-ML
Flow rate from 11 l/h to 220 l/h, counter pressure up to 20 bar
By using a multi-layer diaphragm, a safety technical demanding metering can be realized. Increased safety requirements are guaranteed by a secure diaphragm monitoring (pressure switch, pressure gauge, etc.).
Product information Series 4 Multi-Layer Diaphragm Pumps
- Increased operational safety
- Longer diaphragm lifetimes
- Higher feed pressure
- Highest dosing accuracy
- Dry run safety
- Hight quality materials
- Continuous operation with minimum maintenance
- Long operating life
- Easy to operate
- Diaphragm rupture indication by manometer
Field of application
Flow free mediums with the following characteristics:
Design and Function
Multi-layer diaphragm technology
High operational safety via multi-layer diaphragm technology and integrated diaphragm monitoring.
Up to ten times higher lifetime of multi-layer diaphragms in comparison to single layer diaphragms.
Excellent priming characteristics without additional equipment.
Applicable to explosion-hazardous areas via optional equipment components.
Simple commissioning thanks to sera's "plug & dose".
The multi-layer diaphragm consists of three layers:
- working diaphragm
- signal diaphragm
- protective membrane
If the diaphragm is damaged, the multi-layer diaphragm technology guarantee zero leakage. The damage to the working diaphragm has no direct failure of the dosing pump. The pump can continue operating for a limited time.
Materials and options
The best suited material is available for each dosing medium!
- Pump body and valves: PVC, PP, PVDF, 1.4571, 1.4581, Titanium, Hastelloy, PP-FRP, PVDF-FRP
- Valve balls: PTFE, 1.4401, Hastelloy
- Valve seals: EPDM, FPM, FEP-covered
- Working diaphragm: PTFE (3-ply)
Please ask us for any material required but not mentioned here
|Typ||Q (at 50 Hz)||p/max.|
up to 11 l/h
|RF409.2-17ML||up to 17 l/h||20 bar|
|RF409.2-45ML||up to 45 l/h||16 bar|
|RF409.2-110ML||up to 110 l/h||10 bar|
|RF409.2-220ML||up to 220 l/h||4 bar|