『Liquid Flow Meter Plastic 1 2 Nps Threaded: Compact NPT Polypropylene Sensors for Water Line Systems』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
Compact NPT Polypropylene Sensors for Water Line Systems: 1/2 NPS Threaded Plastic Liquid Flow Meter
Quick Answer: A compact NPT polypropylene sensor for water line systems handles flow from 0.5 L/min to 25 L/min. It fits DN15 pipes, dosing skids, RO permeate lines, and water treatment panels. Silver Instruments supplies this meter with pulse or 4-20 mA output and ships to Southeast Asia, Oceania, Latin America, Africa, and the Middle East.
What Is a 1/2 NPT Threaded Plastic Liquid Flow Meter?
This is a small inline flow meter with a polypropylene body and male NPT threads on both ends. It uses a paddle wheel rotor to measure flow. The electronics convert rotor speed into a pulse signal or a 4-20 mA current. Because the body is plastic, the meter is light and does not corrode in water service. Crews install it in minutes with thread tape and two pipe fittings. Most water line systems in DN15 use 1/2 NPS as the nominal pipe size. The actual tapered thread is 1/2 NPT.
Why Polypropylene Works for Compact Water Line Sensors
Polypropylene resists scale buildup better than brass in soft or low mineral water. It also avoids metal release, which matters for drinking water, food rinse lines, and electronics cooling loops. The injection molded body keeps the cost stable for OEM skid builders. But polypropylene has limits. Do not use it with strong oxidizers, toluene, or steam above 60 degrees Celsius. We tell customers to avoid long exposure to UV outdoors unless the meter is inside a panel.
Installation and Flow Conditions
Install the meter with 10 pipe diameters of straight run upstream and 5 pipe diameters downstream. That is short enough for a pump skid or a wall mounted panel. The body length is about 95 mm. Weight is under 0.4 kg. You do not need special pipe supports. For good accuracy, keep the pipe full and remove air bubbles. Avoid mounting the meter on the suction side of a pump. The rotor can over speed if air enters the line.
Typical Applications We See in Export Markets
Water treatment contractors in Malaysia use this type on polymer dosing water. Australian OEMs put it on mobile washdown units. In Chile, mining camps use it for potable water skids. In Saudi Arabia, it fits brackish water RO feed lines. The flow range covers small transfer pumps and diaphragm pump discharge lines. In Vietnam, a customer installed ten units on a seawater desalinati
Key Specifications for Model SI-PP15-NPT
We supply model SI-PP15-NPT as the standard compact option. The wetted parts are polypropylene, ceramic, and EPDM or FKM. Flow range for water is 0.5 to 25 L/min. Accuracy is plus or minus 1.5 percent of full scale. Repeatability is plus or minus 0.5 percent. Maximum working pressure is 10 bar at 25 degrees Celsius. Maximum liquid temperature is 60 degrees Celsius. Output options include pulse, 4-20 mA, and RS485 Modbus. Power supply can be 5 to 24 VDC for pulse or 24 VDC for 4-20 mA. We set the K factor before shipping. Tell us your pipe size, flow range, and output type.
How to Order from Silver Instruments Without Delay
Send us your pressure in bar, temperature in degrees Celsius, pipe size in DN or NPT, and flow range in L/min. We will reply with a quote, lead time, and freight cost to your city. Our contact numbers are Tel +86-25-68650347, Whatsapp +86-25-52155837, and WeChat +86 15365082610. You can also visit flow-meter.com.au and send a request through the product page. We export to more than 40 countries. Most customers receive a quotation within 24 hours.
FAQ: Five Key Questions
Can this meter work with low conductivity water?
Yes. The paddle wheel sensor does not need conductivity. It works with RO permeate, rain water, and demineralized water down to 5 µS/cm. Do not use it on thick liquids above 10 cP without checking viscosity.
What is the difference between NPS and NPT?
NPS is the nominal pipe size. NPT is the tapered thread standard. A 1/2 NPS line usually uses 1/2 NPT fittings. Our standard model uses male 1/2 NPT threads.
Can I use this meter in a chemical dosing line?
Yes for mild chemicals compatible with polypropylene, EPDM, and ceramic. That includes many low concentration acids and alkalis. Check compatibility for solvents or strong oxidizers.
Do you ship small trial orders to Australia or Malaysia?
Yes. We ship via DHL, FedEx, and sea freight. Small orders under 20 kg often go by courier. Lead time for standard models is 5 to 10 working days.
What if my flow range is below 0.5 L/min?
We can adjust the rotor or offer a different model. Send us your minimum flow and operating pressure. We have seen this issue on small cooling loops and lab skids.
Hot Blog
Related AD
