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Dwyer Window Sight Flow Indicator with Impeller: Rotor, Bronze, 1 in FNPT - Flow Sights with Indicator
DwyerFlow Sights with Indicator

Dwyer Window Sight Flow Indicator with Impeller: Rotor, Bronze, 1 in FNPT

The DWYER Window Sight Flow Indicator with Impeller: Rotor (SKU 21XL63, MPN SFI-100-1) is a flow sight designed for gear lube media. It features a bronze body with 1-inch FNPT connections, a tempered glass sight and…

SKU 3G-OTH-92350

Brand
Dwyer
Item
Window Sight Flow Indicator with Impeller: Rotor, Bronze, 1 in FNPT
Category
Flow Sights with Indicator
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Technical Specifications

Dwyer
Manufacturer Part Number
SFI-100-1
Type
Bronze
FNPT
1 in
Seal Material
Buna-N
Flow Direction
Horizontal Right
For Media Type
Gear Lube
Sight Material
Tempered Glass
Connection Size
1 in
Connection Type
FNPT
Wetted Material
Tempered Glass
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 (SKU 21XL63, MPN SFI-100-1) is a flow sight designed for gear lube media. It features a bronze body with 1-inch FNPT connections, a tempered glass sight and wetted material, and a Buna-N seal. The unit is configured for horizontal right flow direction.

Frequently Asked Questions

What is the Dwyer SFI-100-1 sight flow indicator used for?

The Dwyer SFI-100-1 window sight flow indicator with impeller rotor is used to visually verify flow of gear lube media in industrial piping systems. It is commonly applied in lubrication circuits, hydraulic return lines, and process monitoring where confirming flow direction and presence is critical.

What are the specifications of the Dwyer SFI-100-1?

The Dwyer SFI-100-1 has a bronze body with 1-inch FNPT connections, a tempered glass sight and wetted material, and a Buna-N seal. It is designed for gear lube media with horizontal right flow direction. The manufacturer part number is SFI-100-1.

Where to buy the Dwyer SFI-100-1 worldwide?

3G Electric supplies the Dwyer SFI-100-1 sight flow indicator to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this genuine Dwyer part.

How to install a Dwyer sight flow indicator?

Install the Dwyer SFI-100-1 in a horizontal pipe run with flow moving from left to right. Ensure the FNPT connections are properly sealed with thread sealant. Do not overtighten the bronze body. Verify the impeller rotor spins freely before pressurizing the system.

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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