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Dwyer Window Sight Flow Indicator with Impeller: Rotor, Bronze, 3/4 in FNPT - Flow Sights with Indicator
DwyerFlow Sights with Indicator

Dwyer Window Sight Flow Indicator with Impeller: Rotor, Bronze, 3/4 in FNPT

The DWYER Window Sight Flow Indicator with Impeller: Rotor (MPN SFI-300-3/4) is a flow sight designed for water media. It features a bronze body, 3/4 in FNPT connections, a tempered glass sight, Buna-N seal material…

SKU 3G-OTH-92238

Brand
Dwyer
Item
Window Sight Flow Indicator with Impeller: Rotor, Bronze, 3/4 in FNPT
Category
Flow Sights with Indicator
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Technical Specifications

Dwyer
Manufacturer Part Number
SFI-300-3/4
Type
Bronze
FNPT
3/4 in
Seal Material
Buna-N
Flow Direction
Vertical Up
For Media Type
Water
Sight Material
Tempered Glass
Connection Size
3/4 in
Connection Type
FNPT
Wetted Material
PTFE
View Full Spec Sheet

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Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The DWYER Window Sight Flow Indicator with Impeller: Rotor (MPN SFI-300-3/4) is a flow sight designed for water media. It features a bronze body, 3/4 in FNPT connections, a tempered glass sight, Buna-N seal material, and PTFE wetted material, with a vertical up flow direction.

Frequently Asked Questions

What is the DWYER SFI-300-3/4 window sight flow indicator used for?

The DWYER SFI-300-3/4 is a window sight flow indicator with an impeller rotor, used to visually verify water flow in piping systems. It is commonly applied in industrial water treatment, HVAC, and process lines where confirming flow direction and presence is critical.

What are the specifications of the DWYER SFI-300-3/4 flow indicator?

The DWYER SFI-300-3/4 has a bronze body, 3/4 in FNPT connections, tempered glass sight, Buna-N seal, and PTFE wetted material. It is designed for water media with vertical up flow direction. The manufacturer part number is SFI-300-3/4.

Where to buy the DWYER SFI-300-3/4 flow indicator worldwide?

3G Electric supplies the DWYER SFI-300-3/4 flow indicator to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this item.

How to install the DWYER SFI-300-3/4 sight flow indicator?

Install the DWYER SFI-300-3/4 in a vertical pipe section with flow moving upward. Apply thread sealant to the 3/4 in FNPT connections and tighten to manufacturer torque specs. Ensure the tempered glass window is unobstructed for clear visual indication.

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 flow sights with indicator. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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