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زجاج الرؤية BL401-1 مقابل BL401-3: الاختلافات الهيكلية ودليل الاستخدام | بورلان فلويد
BL401-1 vs BL401-3 Sight Glass – What’s the Real Difference?
In sanitary pipeline systems, choosing the correct sight glass is critical for system integrity, pressure stability, and process monitoring efficiency.
At Borlan Fluid, the BL401 series is designed for hygienic industries including pharmaceutical, dairy, beverage, and biotechnology applications. Among them, BL401-1 and BL401-3 are frequently compared models.
This guide breaks down their structural differences and ideal application scenarios.
1. Structural Design Comparison
BL401-1 Sight Glass
- Standard flat sight glass structure
- Compact installation length
- Suitable for general pipeline observation
- Cost-effective for standard sanitary systems
BL401-3 Sight Glass
- Reinforced structure design
- Higher mechanical strength
- Improved sealing stability under higher pressure
- Better suited for demanding pharmaceutical environments
Key Structural Difference:
BL401-3 typically features enhanced reinforcement around the glass housing and flange area, improving pressure resistance and long-term durability.
2. Pressure & Application Scenarios
| Model | Typical Application | Pressure Tolerance | Recommended Industry |
|---|---|---|---|
| BL401-1 | Standard monitoring | Medium | Dairy / Beverage |
| BL401-3 | High-demand systems | Higher | Pharmaceutical / Biotech |
If your system involves:
- CIP/SIP high-temperature sterilization
- Higher line pressure
- Strict GMP compliance
BL401-3 is generally the safer long-term option.
For general visual inspection in low to medium pressure environments, BL401-1 provides excellent cost-performance balance.
3. Material & Compliance
Both models from Borlan Fluid are manufactured with:
- SS304 / SS316L stainless steel
- Sanitary grade sealing materials
- Optional surface treatment: Ra ≤ 0.8 μm
- Compliance options: FDA / GMP compatible
4. How to Choose Between BL401-1 and BL401-3?
Selection should consider:
- Working pressure
- Process temperature
- Cleaning frequency (CIP/SIP cycles)
- Budget constraints
- Long-term maintenance expectations
If lifecycle durability is a priority → BL401-3
If cost optimization is primary → BL401-1
5. Why Choose Borlan Fluid Sight Glass?
Borlan Fluid specializes in hygienic stainless steel components for pharmaceutical and food industries.
Our advantages include:
- Stable raw material sourcing
- Precision CNC machining
- Strict sealing tolerance control
- Export experience to EU, Middle East and North America
For technical drawings and customization, contact Borlan Fluid engineering team.
