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Series-550
Glass Sight Window, Steel Body, NPT 1/4-2 in, for Tanks & Vessels
- Glass to metal bond for utmost reliability
- Plated steel bodies have convenient hex wrench surfaces for easy installation
- Windows are clear, ripple free, and flush with the front face, with no recess on which dirt might collect
Product Overview
- Applications Fluid Measurement and Control, Oil
- Materials, Wetted Glass, Steel
- Media Compatibility Consult Factory
- Operating Temperature, Max 200 °F
- Measurement Pressure Type Gauge
- Process Connection Type NPT Male
- Requires Factory Media Review true
- Series ID Series-550
Supported Applications
The Dwyer Series 550 Sight Window is a glass sight window with a plated steel body designed to display the level or contents of tanks and pipelines. The series supports service for compatible gases and liquids.
Operating Conditions & Performance
Performance limits are defined by the following specifications:
- Temperature Limit: 200°F (93°C)
- Pressure Limit: 125 psig (8.6 bar)
The wetted materials consist of a glass window and a plated steel body.
Configuration Options
The Series 550 is offered in multiple sizes to accommodate various installation requirements, with process connections ranging from 1/4" to 2" male NPT. Model numbers follow the pattern SFI-550-<SIZE>, such as SFI-550-1/4 or SFI-550-2.
Dimensional parameters vary by model size:
- A (Connection Size): 1/4 to 2 inches
- B (Overall Length Range): 11/32 [8.73] to 1-7/8 [47.63] inches
- C (Body Diameter Range): 5/8 [15.95] to 2-1/2 [63.50] inches
- D and E Dimensions: Vary by specific model size as detailed in the specification grid.
Key Product Differences
The series includes eight distinct variants corresponding to connection sizes: 1/4, 3/8, 1/2, 3/4, 1, 1-1/4, 1-1/2, and 2 inches. Each variant maintains the same material construction (glass window, plated steel body) and performance limits while differing in overall physical dimensions to match the specified NPT connection size.
PDFs & Manuals
