❓ What is Sight Glass?
A Sight Glass (also called a viewing window or inspection window) is a transparent device installed on industrial process equipment to allow visual monitoring without opening the system. This critical component serves as the "eyes" for operators to monitor liquid levels, flow, color, or contaminants in closed systems.
The main material of our sight glass is borosilicate glass or tempered glass combined with a metal housing (usually stainless steel 304/316). This construction is designed to withstand high pressure, extreme temperatures, and exposure to aggressive chemicals common in chemical, food, and pharmaceutical industries.
Design-wise, sight glass consists of three main components: viewing glass, heat-resistant sealing gasket, and metal housing designed according to industrial flange standards (DIN, ANSI, or JIS). We offer various configurations, including circular, rectangular, and flow indicator models.
⚙️ Product Functions
Liquid Level Monitoring: To control liquid levels in tanks, boilers, and vessels without electronic gauges. Critical in chemical and pharmaceutical industries.
Process Flow Inspection: Visualizing fluid flow in pipes to detect air bubbles, contamination, or color changes.
Reaction Process Monitoring: In chemical reactors to observe color changes, turbidity, or precipitate formation during reactions.
Contamination Prevention: In food and pharmaceutical industries to ensure no foreign particles in production systems.
Pump Operation Indicator: A flow indicator to verify pump operation and circulation systems.
💡 Product Benefits
✅ Real-Time Monitoring: Observe processes without stopping operations
✅ Process Safety: Reduces accident risks from system opening/closing
✅ Extreme Resistance: Operating temperature -20°C to +400°C and pressure up to 25 bar
✅ Cost Saving: Replaces time-consuming manual inspections
✅ Product Quality: Ensures production process consistency
✅ Low Maintenance: Robust design with long service life
✅ Industry Compliance: Meets GMP, FDA, and ATEX standards
🏆 Why Choose Sight Glass from Mulia Jaya Packing?
1. Premium Materials: Thick borosilicate glass (min. 5mm) with low expansion coefficient
2. Various Configurations: Available in round, square, flow indicator, and custom designs
3. Extreme-Resistant Gaskets: Using graphite gaskets or PTFE for high temperatures
4. Complete Flange Standards: ANSI 150#-900#, DIN PN10-PN40, JIS 10K-20K
5. Testing Laboratory: Each unit undergoes pressure and leakage tests before shipment
6. Expert Technical Team: Free consultation for optimal type and material selection
7. Fast Delivery: Complete stock for standard sizes with same-day shipping
📊 Technical Specifications
| Parameter |
Specification |
Explanation |
| Glass Material |
Borosilicate 3.3 / Tempered Glass |
Resists thermal shock up to Δ200°C |
| Housing Material |
SS 304, SS 316, CS ASTM A105 |
Choice based on corrosive environment |
| Operating Temperature |
-20°C to +400°C |
Depends on gasket and seal type |
| Operating Pressure |
10 bar - 25 bar |
Based on flange rating |
| Diameter |
15mm - 500mm |
Common sizes 50mm, 80mm, 100mm, 150mm |
| Glass Thickness |
5mm - 25mm |
Higher pressure requires thicker glass |
| Flange Type |
ANSI, DIN, JIS, BS |
Matches piping system requirements |
| Safety Standards |
ASME B31.3, EN 1092-1 |
Operational safety assurance |
| Additional Options |
LED Lighting, Protective Guard |
For dark areas or impact risk |
🏷️ Available Brands in Indonesia
1. KLINGER Sight Glass: Premium Austrian brand with temperature resistance up to 400°C and pressure rating 40 bar. Top choice for petrochemical industry.
2. GEMÜ Viewing Windows: German solution for pharmaceutical and food applications with FDA and EHEDG certifications.
3. SGL Sight Glass: American product with compact design for limited spaces and high pressure up to 25 bar.
4. Flowline Sight Glasses: UK specialist for flow indicator systems with high accuracy.
5. Local Sight Glass: Import-equivalent quality at competitive prices for standard applications.
🚀 Product Advantages
Optimal Visual Transmission: Our borosilicate glass has >92% clarity without distortion, ensuring accurate observation.
Thermal Shock Resistance: Withstands sudden temperature changes up to 200°C without cracking.
Easy Installation: Plug-and-play design with standard industrial flange systems.
Minimal Maintenance: Our special gaskets resist aging and don't require periodic tightening.
Chemical Compatibility: Materials resistant to strong acids/bases with pH 1-14.
Custom Solutions: Special designs for unique applications with quick lead times.
💬 Customer Testimonials
"We've used KLINGER sight glasses from Mulia Jaya for high-temperature chemical reactors. During 2 years of 24/7 operation, not a single unit has failed or fogged. Downtime savings reached 300 hours/year!" - Petrochemical Plant Supervisor, Cilegon
"As pharmaceutical syrup producers, process cleanliness is critical. GEMÜ sight glasses from Mulia Jaya meet our strict sanitation standards and simplify visual inspection without opening the system." - Pharmaceutical QA Manager, Bogor
📦 Availability & Delivery
Sight glass stock is always available in our Jakarta, Surabaya, and Medan warehouses for standard sizes (DN25-DN200). Delivery can be arranged within 24 hours after order confirmation. For custom sizes or special materials, production lead time is only 7-14 working days.
We serve nationwide shipping through trusted carriers. Jabodetabek and East Java can receive orders today for next morning delivery. Outside Java, estimated delivery takes 2-5 working days with real-time tracking facilities.
🛡️ Warranty & After-Sales Service
Every sight glass is covered by an 18-month warranty against material and manufacturing defects. Our after-sales service includes:
• Free technical consultation for type selection
• Installation and maintenance guidance
• Unit replacement if failure occurs during warranty
• Calibration and periodic inspection services
For warranty claims, our dedicated team responds within 24 working hours with technical solutions or unit replacement.
📞 Contact Us and Order Now!
Make your production process more transparent and controllable! Get free consultation from our engineers for optimal sight glass selection. Special 10% discount for first purchase! Contact us immediately via WhatsApp, email, or visit our contact page. Industrial quality guarantee, express delivery! 🔧🚚