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DwyerInline Flowmeters for Air & Compressed Gases

Dwyer Flowmeter, Range 3-20 Gph Water: Acrylic Flowmeter, Scale, Variable Area

The DWYER Flowmeter (SKU 25F485, MPN VFA-43-SSV) is an inline variable-area flowmeter for air and compressed gases, featuring a scale display and a flow rate adjustment knob. It has a range of 3-20 Gph Water, an…

SKU 3G-OTH-91440

Brand
Dwyer
Item
Flowmeter, Range 3-20 Gph Water: Acrylic Flowmeter, Scale, Variable Area
Category
Inline Flowmeters for Air & Compressed Gases
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Technical Specifications

Dwyer
Manufacturer Part Number
VFA-43-SSV
Type
Scale, Variable Area, Inline, Vertical
Accuracy
+/-5%
Display Type
Scale
Seal Material
Buna-N
O-Ring Material
Buna-N
Unit Of Measure
Gallons
Mounting Orientation
Vertical
Range 3-20 Gph Water
Acrylic Flowmeter
Includes Pressure Guage
No
Includes Flow Rate Adjustment Knob
Yes
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Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The DWYER Flowmeter (SKU 25F485, MPN VFA-43-SSV) is an inline variable-area flowmeter for air and compressed gases, featuring a scale display and a flow rate adjustment knob. It has a range of 3-20 Gph Water, an accuracy of +/-5%, and is designed for vertical mounting with Buna-N seals and O-rings. The unit of measure is gallons, and it does not include a pressure gauge.

Used in

Common applications for Dwyer
Combustion air-filter monitoring — Magnehelic Series 2000 on burner air-intake filter banks
Clean-room and pharmaceutical pressurisation — Magnehelic / Capsuhelic differential-pressure gauges
HVAC fan-discharge static pressure — Mark II inclined-vertical manometers on AHU test points
Filter-blockage alarms — Photohelic Series 3000 combined gauge/switch on air-handling units
BMS-integrated pressure monitoring — Digihelic DH3 with 4–20 mA output for building management

Dwyer Products

3G Electric supplies Dwyer inline flowmeters for air & compressed gases. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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