Profec Water Meter Nylon DN20 1" Male Thread 16 bar Pulse MD-AP
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Profec DN20 Nylon Multi-Jet Water Meter with Pulse Output — 1″ Male Thread, 16 bar, CE/MID Approved
This product is no longer supplied. A suitable current alternative is the Profec Water Meter Nylon DN25 1¼" (7025226) – the DN25 version of the same meter (connects to 1" with a reducer).
This horizontal multi-jet water meter from Profec is engineered for accurate cold-water measurement in pool circulation systems, irrigation networks, and greenhouse installations. The all-nylon body keeps weight low and resists corrosion, while the sealed, tamper-evident dial housing protects the totaliser from moisture and dust. A magnetic drive isolates the wet and dry sections, ensuring long-term reading accuracy without mechanical seal wear at the register.
The meter carries full CE and MID (Measuring Instruments Directive) certification, making it suitable for fiscal and billing-grade metering applications. The integrated reed-switch pulse output (10 litres per pulse) allows connection to irrigation controllers, dataloggers, building management systems, or 24 V automation panels without any additional pickup hardware. The horizontal installation orientation keeps the register permanently upright and easy to read, and the hinged protective lid shields the dial face during installation and routine inspection.
Specifications
- Model / type: MD-AP
- Nominal diameter: DN20
- Connection size: 3/4 inch male thread (both ends)
- Installation length (face to face): 190 mm
- Body height (approx.): 106 mm
- Register depth (approx.): 99 mm
- Body material: Nylon (glass-filled polyamide)
- Colour: Black
- Metering principle: Multi-jet, horizontal
- Maximum working pressure: 16 bar
- Maximum water temperature: 50 °C
- Pulse output: Reed switch, 10 litres per pulse
- Pulse supply voltage: 24 V DC
- Minimum readable flow: 0.1 m³/h (Q1 start flow)
- Register multiplier: ×0.0001 m³ (100 ml per increment)
- Certifications: CE, MID (MD-AP class)
- Installation orientation: Horizontal pipe, register facing up
Compatibility
The 3/4 inch BSP male-threaded connections fit standard 3/4 inch female couplings, union nuts, and saddle clamps used in pool pipework and drip-irrigation manifolds. The 24 V reed-switch pulse output is compatible with most irrigation controllers, flow-monitoring PLCs, and dataloggers that accept volt-free or low-voltage pulse signals. Not rated for hot-water or steam service; maximum medium temperature is 50 °C. Intended for cold potable water and chemically neutral irrigation water only.
Additional information
| Brand: | Profec |
|---|---|
| Model: | MD-AP |
| Nominal diameter: | DN20 |
| Connection type: | Male thread 3/4 inch BSP (both ends) |
| Face-to-face length: | 190 mm |
| Body height: | 106 mm |
| Register depth: | 99 mm |
| Body material: | Nylon (polyamide) |
| Colour: | Black |
| Metering principle: | Multi-jet |
| Installation orientation: | Horizontal |
| Maximum working pressure: | 16 bar |
| Maximum medium temperature: | 50 °C |
| Pulse output: | Reed switch, 10 litres per pulse |
| Pulse voltage: | 24 V DC |
| Minimum flow (Q1): | 0.1 m³/h |
| Register multiplier: | ×0.0001 m³ |
| Certification: | CE, MID (Measuring Instruments Directive) |
In details
- MID-certified for fiscal-grade accuracy — accepted for billing and regulatory compliance
- Integrated 10 L/pulse reed-switch output ready for direct wiring to 24 V controllers or dataloggers
- Corrosion-proof nylon body eliminates dezincification risk common with brass meters in soft or aggressive water
- Hinged tamper-evident lid protects the dial and deters unauthorised register adjustment
- Rated to 16 bar — handles high-pressure mains and boosted irrigation systems without a pressure reducer
- Horizontal installation only — cannot be mounted vertically without affecting measurement accuracy
- Maximum 50 °C water temperature; unsuitable for hot-water or solar-loop circuits
- Single-direction flow measurement only; reverse flow is not registered and may damage the mechanism
