


Dwyer Instruments SFI-300-1/2 | Sight flow indicator | 1/2" body | 4.063" L x 2.750" D x 2.563" H (103 x 70 x 65 mm) | 2.6 lb (1.2 kg)
Sight flow indicators in the Series 100 and 300 are built with high-quality components and undergo safety testing to provide long-lasting, dependable operation at competitive costs. Brass or 316 SS bodies, viewing windows, and threaded process connections are features of the 100 and 300 Series. The 350 type features a double window without a moving indication, the 360 type features a double window with a flapper, the 100 type features a single window with a revolving impeller, and the 300 type features a double window with a rotating impeller. Every kind has a detachable window for simple maintenance and component replacement.

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Connection | Threaded |
Depth | 2.750" (70 mm) |
Height | 2.563" (65 mm) |
Length | 4.063" (103 mm) |
Manufacturer | Dwyer Instruments |
Material | Wetted: Window: tempered glass Body: bronze or 316 SS Gasket: Buna-N, fluoroelastomer or PTFE Indicator: ABS or 316 SS impeller (100 and 300), 304 SS or 316 SS flapper (360) |
Maximum Operating Pressure | 125 psig (8.62 bar), 150 psig (10.34 bar) on "MP" Models |
Maximum operating temperature | 200°F (93°C) 120°F (48°C) on W2 option 170°F (77°C) on I1 option |
Size | Body: 1/2" |
Type | Sight Flow Indicator |
Weight | 2.6 lb (1.2 kg) |
- The Sight Flow Indicators are manufactured using quality materials, ensuring durability and reliability.
- They undergo safety testing to ensure they meet safety standards, ensuring safe operation.
- Designed to provide extended and reliable service life, reducing the need for frequent replacements.
- They feature threaded connections for easy installation into various piping systems.
- Equipped with viewing windows that allow operators to visually inspect the flow of fluids.
- Available in bodies made of brass or 316 stainless steel, providing options to suit different applications and environments.
- The series includes types such as the 350 with a double window and no moving indicator, and the 360 with a double window and a flapper.
- Features a removable window for easy maintenance and replacement of wearing parts, reducing downtime and maintenance costs.
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