--- product_id: 213222397 title: "G3/4\" Male Thread Brass Water Flow Sensor Switch Hall Effect Liquid Flowmeter Fluidmeter Counter BSP 1-30L/Min（50mm in Total Length）" brand: "gredia" price: "339 kr" currency: DKK in_stock: true reviews_count: 8 url: https://www.desertcart.dk/products/213222397-g3-4-male-thread-brass-water-flow-sensor-switch-hall store_origin: DK region: Denmark --- # Flow range: 1-30L/Min G3/4" BSPT male thread Operating temp: 0-80℃ G3/4" Male Thread Brass Water Flow Sensor Switch Hall Effect Liquid Flowmeter Fluidmeter Counter BSP 1-30L/Min（50mm in Total Length） **Brand:** gredia **Price:** 339 kr **Availability:** ✅ In Stock ## Summary > 💦 Flow with Confidence: The Ultimate Water Sensor Switch! ## Quick Answers - **What is this?** G3/4" Male Thread Brass Water Flow Sensor Switch Hall Effect Liquid Flowmeter Fluidmeter Counter BSP 1-30L/Min（50mm in Total Length） by gredia - **How much does it cost?** 339 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/213222397-g3-4-male-thread-brass-water-flow-sensor-switch-hall) ## Best For - gredia enthusiasts ## Why This Product - Trusted gredia brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Applications:** Ideal for water heaters, dispensers, and more—perfect for any setup. - • **High Pressure Tolerance:** Handles water pressure up to 1.75Mpa, ensuring consistent performance. - • **Robust Brass Construction:** Crafted from high-quality brass for enhanced durability and anti-oxidation. - • **Precision Flow Measurement:** Experience accuracy with ±3% error for reliable readings. - • **Wide Voltage Compatibility:** Operates seamlessly within a DC5-15V range for flexible integration. ## Overview The G3/4" Male Thread Brass Water Flow Sensor Switch is a high-performance liquid flowmeter designed for precision and durability. With a flow range of 1-30L/Min and a robust brass construction, it is perfect for various applications including water heaters and dispensers. Operating within a voltage range of DC5-15V and tolerating pressures up to 1.75Mpa, this sensor ensures reliable performance in diverse environments. ## Description G3/4" Male Thread Brass Water Flow Sensor Switch Hall Effect Liquid Flowmeter Fluidmeter Counter BSP 1-30L/Min（50mm in Total Length） ## Features - Connection size: G3/4 inch BSPT male thread, 50mm, hall effect - Flow range: 1-30L/Min, Water Pressure: ≤1.75Mpa, Working voltage range: DC5～15V - F = (6.6* Q) ± 3%, Q=L/Min, error: ± 3%, Operating temperature range: 0-80℃ (0-176°F) - Material: High quality brass with more than 57% , anti-oxidation, more wear-resistant - Wide range of applications, mainly used for water heaters, water dispensers, etc. ## Images ![G3/4" Male Thread Brass Water Flow Sensor Switch Hall Effect Liquid Flowmeter Fluidmeter Counter BSP 1-30L/Min（50mm in Total Length） - Image 1](https://m.media-amazon.com/images/I/61PncjWCKiL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Nicely built water flow sensor *by M***L on Reviewed in the United States on August 7, 2022* I was looking for a component to measure the water flow at a water hydrant (outdoor spigot) at my barn so that I could tie this into my home automation system. This not only can give me a warning if I forget and leave the water on (ask me how easy this is to do when it's 400' from your house), but it can also record water usage patterns and total water consumption.Only downside to this sensor (for those of us in the US) is that it has BSP threads. I had to use a total of 4 adapters to insert this sensor between my hydrant and the hose splitter: GHT->NPT, NPT->BSP, (sensor), BSP->NPT, NPT->GHT. So the entire assembly is a little long, but I had plenty of room so not a problem for me. Sensor looks well machined and (so far) has been very reliable.The specified counts didn't match reality for me. By filling a 5 gallon bucket multiple times, I found that I get about 1588 pulses per gallon. Your mileage may vary.I used an underground rated cable to run the power and data lines from this sensor underground and into my tack room, where I placed the rest of the electronics to tie this into my system. This comprised a TTL buffer (as the output of this sensor has very little drive capability), then a voltage divider to reduce the TTL output to 3.3V max, which fed into an ESP8266. Software on the 8266 was built with ESPhome and simply calculates the gallons per hour and total gallons consumed and feeds those to Home Assistant (see picture). ### ⭐⭐⭐⭐ 4.0 out of 5 stars works well after thorough calibration *by T***. on Reviewed in the United States on October 24, 2024* works well at higher flows. doesn't report anything below 2-3 L/min. needs calibrating. NPT adapters are hard to find. ### ⭐ 1.0 out of 5 stars Not as described *by R***. on Reviewed in the United States on October 25, 2024* Did not work as described and had to return ## Frequently Bought Together - GREDIA G3/4" Male Thread Brass Water Flow Sensor Switch Hall Effect Liquid Flowmeter Fluidmeter Counter BSP 1-30L/Min（50mm in Total Length） - GREDIA 3/4" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 1-60L/min - Joywayus Brass Fitting 1" G Thread Female×1" NPT Thread Male Brass Pipe Fitting Adapter --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.dk/products/213222397-g3-4-male-thread-brass-water-flow-sensor-switch-hall](https://www.desertcart.dk/products/213222397-g3-4-male-thread-brass-water-flow-sensor-switch-hall) --- *Product available on Desertcart Denmark* *Store origin: DK* *Last updated: 2026-04-25*