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Wetted Materials:Body: Acrylic plastic; O-ring: Buna-N (fluoroelastomer available); Metal parts: Nickel plated brass standard, SS optional; Float: SS, black glass, aluminum, K monel depending on range.
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).
Accuracy:VFA = 5% of FS; VFB = 3% of FS.
Process Connection:1/8" female NPT. VFB ranges 85 and 86 have 1/4" NPT back connections or 3/8" NPT end connections. These ranges not available with brass valves.
Scale Length:VFA 2" typical length; VFB 4" typical length.
Mounting Orientation:Mount in vertical position.
Weight:VFA: 4.0 to 4.8 oz (.11 to .14 kg)
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A: According to our return policy, if the return is due to product quality issues or our mistake, we will cover the return shipping fee. If it's for other reasons, the return shipping fee may be borne by you. Please refer to our return policy for specific details.
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A: On the checkout page, you can select the option for an invoice and fill in the relevant invoice information. We will provide you with the corresponding invoice according to your request.
Reviews
- G
Greg Modde
Jan 22, 2026
Dwyer Flowmeter VFA-41-BVGreat. Fans arrived quickly and work as promised.HelpfulUnhelpful - C
Carla James
Jan 10, 2026
Dwyer Flowmeter VFA-41-BVExcellent cooperation.HelpfulUnhelpful - T
Tim Carnation
Jul 16, 2025
Dwyer Flowmeter VFA-41-BVExtremely easy to accessHelpfulUnhelpful - C
Charles McFeeley
Jul 10, 2023
Dwyer Flowmeter VFA-41-BVService was exactly as advertised: speedy and budget-friendly. They had the hard-to-find item in stock and sent it out right away.HelpfulUnhelpful - A
Anonymous user
Nov 25, 2022
Dwyer Flowmeter VFA-41-BVAll was ok! No problems whatsoever.HelpfulUnhelpful
Dwyer Flowmeter VFA-41-BV
✔ In Stock (Can ship in 5-7 days)

Online Support 24/7
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