MODEL OVERVIEW
What the FM20 offers
- CI FG220, Class-B, IP68, 0-45°C
- compact design
- working pressure not explicit in its block
Manufacturer’s documented description: Fedrel product and price list, effective 20 January 2026, pp. 2–6. Options and qualifications above are retained as stated.
TECHNICAL DATA
FM20 specifications
| Parameter | Documented value |
|---|---|
| Measuring principle | woltmanFedrel product and price list, effective 20 January 2026, 2–6 |
| Nominal diameter (DN) | 40, 50S17 · 7 |
| Accuracy statement | Class BS17 · 7 |
| Fluid temperature | 0–45°CS17 · 7 |
| Connections | BS EN1092 PN16 flange drilling; not a substitute for body working pressureS17 · 7 |
| Sensor protection | IP68S17 · 7 |
| Body material | Cast iron IS210 FG220S17 · 7 |
Details to confirm for the offered configuration
These parameters are not established as exact-model values in this record. Some may not apply to this technology.
- Q1 m3 h
- Q2 m3 h
- Q3 m3 h
- Q4 m3 h
- Working pressure and temperature
- Approvals and scope
DUTY & SELECTION
Where to consider this type
Water drives a helical rotor used for larger flows. Many ranges have flanged bodies and removable measuring inserts.
Installation and commissioning
Before the meter is selected
- Overnight flow and continuous/short peak demand
- Rotor-axis and pipe orientation requirements
- Removable insert service clearance
- Flange drilling, head loss and straight pipe
Before the system is handed over
- Confirm the installation drawing, orientation and access for service.
- Match the actual flow range and permitted pressure loss to the project.
- Record meter serial number, start reading and any output scaling.
- Commission communications against the receiving system and retain the test record.
Reading and communication
No electronic output is established for the base record. Confirm a compatible pickup or communication variant if remote reading is required; do not assume another model’s output can be fitted.
Understand pulse, wired and wireless reading ↗Documents and purchase checks
Read the Fedrel technical reference → · Browse the source index
Source: Fedrel product and price list, effective 20 January 2026, pp. 2–6. Reviewed 2026-09-09.
Ask for these before ordering
- Approved drawing for the exact model, size and configuration
- Serial-number calibration or factory test record
- Applicable approval certificate and exact scope
- Installation manual and required straight pipe
- Protocol/register map and output power requirements
- Option/accessory codes with included components
- Pressure-loss curve, flange drilling and face-to-face length
- Current written commercial and warranty terms
SPECIFY YOUR REQUIREMENT
Get a quotation for FM20
Tell us the size and quantity you need. Add the fluid, flow or output requirement if known. You can review and send the enquiry from your email app on the next page.
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