MWN/JS-S — combination (twin) water meters DN50–150 for sites with sharply varying flow, up to R4000
Country: Poland · Model: MWN/JS-S
MWN/JS-S is a combination cold water meter for up to 50 °C at DN50–150, which joins a main MWN Nubis turbine meter, a bypass JS Smart single-jet meter and a changeover valve. The metrological range reaches R4000, so one device measures both night consumption and short large draw-offs. Maximum working pressure is 16 bar (PN16).
- Type
- dry-dial combination meter: main MWN Nubis turbine + bypass JS Smart single-jet + changeover valve
- Diameters
- DN50, DN65, DN80, DN100, DN150
- Nominal flow rate Q3
- 25 / 40 / 63 / 100 / 250 m³/h
- Metrological range
- up to R4000
Technical specifications
| Type | dry-dial combination meter: main MWN Nubis turbine + bypass JS Smart single-jet + changeover valve |
|---|---|
| Diameters | DN50, DN65, DN80, DN100, DN150 |
| Nominal flow rate Q3 | 25 / 40 / 63 / 100 / 250 m³/h |
| Metrological range | up to R4000 |
| Water temperature | up to 50 °C |
| Working pressure | up to 16 bar (PN16) |
| Length | 270/300 mm (DN50) … 500 mm (DN150) |
| Flanges | PN-EN 1092-2 PN10, DIN 2532, DIN 2501, BS 4504 PN10 |
| Registers | main — 6-drum, bypass — 8-drum; IP65 as standard, IP68 with #UTIP connector |
| Standards | MID, EN 14154, ISO 4064, OIML R49; EC type certificate, PZH approval |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
A spring-loaded valve switches the flow by itself, without external intervention, between the bypass and main meters depending on the flow rate, so small flows are measured by the sensitive JS and large ones by the MWN. The manufacturer recommends such meters for industrial and commercial facilities, hospitals, schools and hotels with fire hydrants, where large draw-offs occur due to the process or in emergencies. Installation is on horizontal pipelines with the registers facing up. The main meter body is painted cast iron, the bypass body is brass, and the vanes run on double-sided bearings. The main register is six-drum and the bypass register is eight-drum, both rotating. The standard IP65 version is designed for optical and inductive modules, and IP68 with #UTIP connector for inductive modules, which are fitted to the JS4 through intermediate rings. The -NKP version has an NK reed sensor on the main meter and an NK sensor with a 2 m cable on the bypass, up to 10 m. The registers are protected against turning beyond 358° and against external magnetic fields.
How to choose
The diameter is chosen by Q3, namely DN50 gives 25 m³/h, DN65 40, DN80 63, DN100 gives 100 m³/h and DN150 gives 250 m³/h. The face-to-face length is from 270/300 mm for DN50 to 500 mm for DN150, and a different body length is possible to order. The flanges are drilled per PN-EN 1092-2 (PN10), DIN 2532, DIN 2501 or BS 4504 (PN10). The product is made to MID, EN 14154, ISO 4064 and OIML R49, with an EC type certificate and PZH approval. For inlets with stable flow the single-jet JS Impero is sufficient, and for large draw-offs without small consumption the MWN Nubis turbine meter.
Request a price and lead time
MWN/JS-S — combination (twin) water meters DN50–150 for sites with sharply varying flow, up to R4000. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How does the MWN/JS-S combination meter work?
A spring-loaded valve switches the flow by itself between the bypass JS and the main MWN depending on the flow rate. Small flows are measured by the JS and large ones by the MWN, which gives a range up to R4000.
Which sites is it recommended for?
For industrial and commercial facilities, as well as hospitals, schools and hotels with fire hydrants, where large water draw-offs occur periodically or in emergencies.
What are the maximum pressure and water temperature?
Maximum working pressure is 16 bar (PN16) and water temperature is up to 50 °C.
How many drums do the registers have?
The main meter has six drums and the bypass has eight. Both registers rotate, which makes visual reading easier.
Similar products
REQUEST
Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.