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Dwyer Window Sight Flow Indicator with Impeller: Rotor, 316 Stainless Steel, 1 1/4 in FNPT - Flow Sights with Indicator

DwyerFlow Sights with Indicator

Dwyer Window Sight Flow Indicator with Impeller: Rotor, 316 Stainless Steel, 1 1/4 in FNPT

The DWYER Window Sight Flow Indicator with Impeller: Rotor (SKU 21XL80, MPN SFI-300SS-1-1/4) is a flow sight with indicator designed for gear lube media. It features a 1 1/4 in FNPT connection, tempered glass sight…

SKU 3G-OTH-92449

Brand

Dwyer

Item

Window Sight Flow Indicator with Impeller: Rotor, 316 Stainless Steel, 1 1/4 in FNPT

Category

Flow Sights with Indicator

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Technical Specifications

Dwyer

Manufacturer Part Number

SFI-300SS-1-1/4 

Type

FNPT 

FNPT

1 1/4 in 

Seal Material

Buna-N 

Flow Direction

Vertical Down 

For Media Type

Gear Lube 

Sight Material

Tempered Glass 

Connection Type

FNPT 

Stainless Steel

316

Wetted Material

Bronze 

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 21XL80, MPN SFI-300SS-1-1/4) is a flow sight with indicator designed for gear lube media. It features a 1 1/4 in FNPT connection, tempered glass sight, Buna-N seal, and bronze wetted material, with a vertical down 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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