--- product_id: 112571653 title: "Dwyer® Visi-Float® Flowmeter, VFA-24-BV, Acrylic Block, 5% FS Acc, 1-10 LPM air, Br Valve" brand: "dwyer" price: "฿12260" currency: THB in_stock: true category: "Dwyer" url: https://www.desertcart.co.th/products/112571653-dwyer-visi-float-flowmeter-vfa-24-bv-acrylic-block-5 store_origin: TH region: Thailand --- # 1/8" female NPT connections ±5% FS accuracy Up to 150°F temp rating Dwyer® Visi-Float® Flowmeter, VFA-24-BV, Acrylic Block, 5% FS Acc, 1-10 LPM air, Br Valve **Brand:** dwyer **Price:** ฿12260 **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your airflow game with precision and durability that professionals swear by! ## Quick Answers - **What is this?** Dwyer® Visi-Float® Flowmeter, VFA-24-BV, Acrylic Block, 5% FS Acc, 1-10 LPM air, Br Valve by dwyer - **How much does it cost?** ฿12260 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/112571653-dwyer-visi-float-flowmeter-vfa-24-bv-acrylic-block-5) ## Best For - dwyer enthusiasts ## Why This Product - Trusted dwyer brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Endure:** Solid acrylic block resists breakage while offering crystal-clear visibility of measurements. - • **Effortless Control:** Optional brass metering valve lets you fine-tune air flow with precision and ease. - • **Seamless Integration:** Compact 1/8" female NPT inlet/outlet connections fit effortlessly into your existing system. - • **Versatile Performance:** Operates safely up to 150°F and 100 psig, perfect for demanding industrial environments. - • **Precision You Can Trust:** ±5% full scale accuracy ensures reliable air flow readings every time. ## Overview The Dwyer® Visi-Float® VFA-24-BV is a compact, highly accurate (±5% FS) acrylic block flowmeter designed for inline air flow measurement from 1 to 10 LPM. Featuring durable 1/8" female NPT brass connections and optional metering valve, it withstands pressures up to 100 psig and temperatures up to 150°F, making it ideal for medical, industrial, and environmental applications requiring reliable, clear, and precise airflow monitoring. ## Description The Dwyer Visi-Float series VFA flowmeter is a 2" scale air flow meter with 1/8" female NPT inlet and outlet connections for inline monitoring and measuring of air flow with an accuracy of + or – 5% of full scale, and is precision machined from solid acrylic plastic to resist breakage and provide a clear view of the scale. Black scale graduations are hot-stamped into the plastic for distinct readings. This lightweight flowmeter has a metal mounting insert for panel mounting and can also be supported directly by system piping. Models are available for measuring air flow in scfh or lpm. Some models come with a brass or stainless steel metering valve for precise adjustment of air flow. Inlet and outlet connections are brass except for models with stainless steel wetted parts and the connections are on the back of the flowmeter except for models that have end connections. This flowmeter is commonly used for measuring air flow in medical equipment, air samplers, gas analyzers, pollution monitors, chemical injectors, and cabinet purging equipment, among other devices.SpecificationsScale length2" (on average)Accuracy+ or – 5% of full scaleConnections1/8" female NPT inlet and outletPressure and temperature ratingWithout valve: 100 psig/6.9 bar @ 65 degrees C/150 degrees F; with valve: 100 psig/6.9 bar @ 48 degrees C/120 degrees FWetted materialsBody: acrylic plastic; O-ring: Buna-N; metal parts: brass (standard) or stainless steel (applicable models); float (varies by range): black glass, nickel/copper alloy, stainless steel, or aluminumDimensions (H x W x D)104.0 x 25.40 x 31.75 mm/4-3/32 x 1 x 1-1/4 inchesWeight0.11 to 0.14 kg/4.0 to 4.8 oz.H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back. Anemometers, also called wind meters, measure air velocity and are most commonly used for weather monitoring to determine wind speed and for HVAC applications to determine air flow within ducts. In addition to air velocity, anemometers may measure wind direction, air pressure, air flow volume, air temperature, humidity, light, and other properties. The most common types of anemometer are cup, vane, hot-wire, and Pitot tube. Cup and vane anemometers calculate air velocity based on the number of rotations of the cups or vane. Hot-wire anemometers calculate air velocity by measuring the change in electrical resistance as air flow cools a heated wire. Pitot tube anemometers measure air pressure within a tube and calculate air velocity based on the difference in pressure between the air inside and outside of the tube. Many anemometers have digital readouts and can display air velocity readings in different units of measure, such as meters per second (m/s), feet per minute (ft./min. or fpm), knots, miles per hour (mph), and kilometers per hour (km/h). Dwyer Instruments manufactures measurement and control instruments, including pressure gauges, flow meters, level instrumentation, temperature instrumentation, and air quality monitors. The company, founded in 1931, is headquartered in Michigan City, IN. ## Features - MANUFACTURER DIRECT - Temperature & Pressure Limits: Without Valve: 100 psig (6.9 bar) @ 150°F (65°C); 150 psig (10 bar) @ 100°F (38°C); With Valve: 100 psig (6.9 bar) @ 120°F (48°C). - Process Connection: 1/8" female NPT. - Service: Compatible gases and liquids. - Scale Length: VFA 2" typical length; Mounting Orientation: Mount in vertical position. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B009PASYH2 | | Best Sellers Rank | #235,624 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #203 in Flowmeters | | Date First Available | June 10, 2013 | | Item Weight | 4.8 ounces | | Item model number | VFA-24-BV | | Manufacturer | Dwyer Instruments | | National Stock Number | 6680-01-433-0226 | | Package Dimensions | 4.3 x 2.2 x 1.1 inches | ## Images ![Dwyer® Visi-Float® Flowmeter, VFA-24-BV, Acrylic Block, 5% FS Acc, 1-10 LPM air, Br Valve - Image 1](https://m.media-amazon.com/images/I/41ofLnjiBmL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - Dwyer® Visi-Float® Flowmeter, VFA-24-BV, Acrylic Block, 5% FS Acc, 1-10 LPM air, Br Valve - Hooshing 1LB Propane Gas Bottle Refill Adapter 1/4" Male NPT Thread x 1"-20 Female Throwaway Cylinder Thread Fitting Grill Stove Connector --- ## 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.co.th/products/112571653-dwyer-visi-float-flowmeter-vfa-24-bv-acrylic-block-5](https://www.desertcart.co.th/products/112571653-dwyer-visi-float-flowmeter-vfa-24-bv-acrylic-block-5) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-07-11*