Four-Window Sight Glass (Multi-Spec Compatible)

1. Materials Core Advantages
- Copper + Chrome Plating Composite Structure: Copper base resists high pressure and offers excellent thermal conductivity (avoiding medium temperature interference); chrome plating significantly enhances oil-gas corrosion/scratch resistance, maintaining mirror texture long-term, with wear-resistant, clear high-borosilicate glass windows.
- Multi-Spec Full Coverage: Four specs cover same-diameter/heterogeneous-diameter pipeline interface scenarios, meeting observation needs of multiple sections and devices with one product series, reducing selection and inventory costs.

2. Key Specifications
- Sizes: 3/4"×3/4", 1"×1", 3/4"×1", 1"×3/4" (compatible with NPT/BSPT/BSP threads).
- Working Pressure: ≤0.5 MPa.
- Temperature Range: -15℃ ~ +80℃.

3. Usage Steps:
1. Select Size: Choose the corresponding spec (same-diameter/heterogeneous-diameter) according to the two-end interface sizes of the pipeline.
2. Sealed Installation: Wrap both threaded ends of the sight glass with oil-resistant tape, screw into pipeline interfaces (tighten copper parts moderately to avoid thread slipping; chrome plating prevents seizing).
3. Observation Judgment: During operation, observe medium via four windows — uniform flow & no impurities → normal system; abnormal flow/foreign matter → inspect pipelines/filters.