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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 21XL71, MPN SFI-300-1) is a bronze flow sight with indicator designed for hydraulic oils. It features a 1-inch FNPT connection, tempered glass sight and…

SKU 3G-OTH-92401

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-300-1
Type
Bronze
FNPT
1 in
Seal Material
Buna-N
Flow Direction
Vertical Up
For Media Type
Hydraulic Oils
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 21XL71, MPN SFI-300-1) is a bronze flow sight with indicator designed for hydraulic oils. It features a 1-inch FNPT connection, tempered glass sight and wetted material, a Buna-N seal, and is rated for vertical-up flow direction.

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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