SANT / Multijet water meters
WM4
Brass multijet hot; 15/20/25/32/40/50 mm
Class-B, dry dial, magnetic drive, to 90°C, 1.0 MPa working, BSP union ends
MODEL OVERVIEW
What the WM4 offers
- Class-B, dry dial, magnetic drive, to 90°C, 1.0 MPa working, BSP union ends
Manufacturer’s documented description: SANT retail price list, August 2026, pp. 63–66. Options and qualifications above are retained as stated.
TECHNICAL DATA
WM4 specifications
| Parameter | Documented value |
|---|---|
| Measuring principle | multijetSANT retail price list, August 2026, 63–66 |
| Nominal diameter (DN) | 15, 20, 25, 32, 40, 50S20 · 63 |
| Fluid temperature | Maximum 90°CS20 · 63 |
| Working pressure and temperature | 1.0 MPa (10 bar)S20 · 63 |
| Connections | Female BSP parallel union endsS20 · 63 |
| Body material | BrassS20 · 63 |
| Standards claim | ISO4064 Class BS20 · 63 |
| Body test pressure | 1.5 MPa hydraulic test; not working pressureS20 · 63 |
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
- Approvals and scope
DUTY & SELECTION
Where to consider this type
Several jets drive the impeller around its circumference. Multijet products are widely represented in domestic and small commercial catalogue ranges.
Installation and commissioning
Before the meter is selected
- Standard and edition behind Class A/Class B wording
- The exact model’s low-flow limits
- Wet/dry register and magnetic coupling
- Hot-water version, pulse pickup and counter scope
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 SANT technical reference → · Browse the source index
Source: SANT retail price list, August 2026, pp. 63–66. 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 WM4
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.
Compare related models
Similar technology does not mean equivalent performance. Compare exact configurations.