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2 Inch Flow Meter for Water: Commercial Inline Submetering Dial Valves
Quick Answer: A 2 inch flow meter for water works well for commercial inline submetering from 2 to 40 m3/h. Silver Instruments supplies DN50 dial valve meters with pulse output, 4-20 mA, and RS485 options. Send your pipe size, pressure, temperature, and flow range for a firm quote.
This meter fits commercial water lines where tenants or departments need local billing and total flow reading. A DN50 dial valve unit installs inline between two pipe flanges or NPT thread connections. The dial shows total volume and the pulse output feeds a building management system or submetering panel.
What a 2 Inch Inline Dial Valve Meter Covers
In practice most engineers skip the oversized meter. A 2 inch line in a commercial building runs from 1.5 to 30 m3/h under normal pressure. The dial valve meter from Silver Instruments handles this range without losing pressure. The valve body can be brass, stainless steel 304, or ductile iron depending on water quality and budget.
We have seen this on customer sites many times. A shopping mall in Metro Manila used 22 units on tenant water branches. Each meter gave a mechanical totalizer reading. The pulse output went to a central data logger. The billing dispute dropped after the retrofit because each tenant saw the same reading on the meter and the software.
Key Specifications for DN50 Water Submetering
Use these values as a starting point. Pipe size DN50 or 2 inch. Flow range 2 to 40 m3/h with accuracy plus or minus 2 percent across the middle range. Pressure rating 10 bar standard, 16 bar optional. Temperature 0 to 80 degrees Celsius for cold or hot water. Connection threads BSPT or NPT, flanged ANSI 150 or DIN PN16. Output options include pulse, 4-20 mA, and RS485 Modbus RTU. Mechanical dial and remote total display options are available.
Because many commercial jobs are in Southeast Asia and the Middle East, we keep stock for common models. A contractor in Indonesia ordered 35 units with NPT threads and pulse output for an apartment tower. A facilities team in Dubai used flanged DN50 meters for labor camp water billing. Both jobs shipped within 12 days.
Dial Valve vs Pulse Output: Know Your Data Path
The dial valve is the local totalizer. It is not the full data path. For submetering you need a signal that the building system can read. Silver Instruments pairs the mechanical dial with a reed switch or Hall effect pulse output. One pulse can equal 10 liters or 100 liters depending on the register. For longer runs or central monitoring, choose 4-20 mA or RS485 Modbus. The 4-20 mA signal works with most PLC
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Here is the thing. If you only need a manual reading once a month, buy the dial valve version without output. It costs less. If the building has a controller or energy management system, add the pulse output. Do not pay for RS485 if nobody reads the data. That is a simple way to control cost.
Installation Notes That Prevent Field Problems
Keep the meter full of water. Avoid air pockets around the impeller or turbine. Place the meter away from the pump discharge by at least 10 pipe diameters upstream and 5 diameters downstream. Install a strainer upstream if the water contains sand, rust, or pipe scale. In many commercial water lines the water quality is fine but old steel pipe can shed particles.
Do not install the meter with the dial facing the floor. The dial must be readable for manual checks. If the meter will sit in a flooded pit, choose IP68 pulse output and a sealed register. Silver Instruments can supply IP68 versions for utility pits and outdoor concrete boxes.
How to Order Without Guesswork
Send us your pressure in bar, temperature in degrees Celsius, pipe size in DN, and flow range in m3/h or GPM. Also state the connection type and signal output. Without these four values we cannot confirm the right body material and pulse setting.
Contact Silver Automation Instruments at Tel: +86-135-1213-1526 or WhatsApp: 86-135-12131526. WeChat: +86 13512131526. A normal quotation for a 2 inch water submeter with dial valve takes one working day. For project quantities above 20 units, ask for a short delivery schedule.
FAQ
What flow range does a 2 inch water meter handle? Most commercial models from Silver Instruments cover 2 to 40 m3/h. The exact range depends on the mechanical register and pulse calibration.
Can the meter measure hot water? Yes. Standard models handle 0 to 80 degrees Celsius. For continuous hot water above 80 degrees Celsius, use a high temperature register and stainless steel body.
Does the dial valve meter work with a PLC or BMS? Yes. Choose pulse output, 4-20 mA, or RS485 Modbus RTU. State the controller type when you order so we can set the pulse scale correctly.
What connection types are available for DN50? BSPT and NPT threads are common for small lines. ANSI 150 or DIN PN16 flanges are standard for larger commercial water branches. Tell us the pipe standard used on site.
How do I get a price for 2 inch water flow meters? Send pipe size, pressure, temperature, flow range, connection type, and output signal to Silver Instruments. Use Tel or WhatsApp at +86-135-1213-1526 or 86-135-12131526.
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