Welcome to the premier engineering authority for direct vessel observation, process liquid-level checking, and containment monitoring components. Operating high-precision metal-stamping lines, certified surface-metrology corridors, and pressure-compliance testing complexes, FlowBiz Export Pvt Ltd is a reputable manufacturer of Sight Glass, a crucial component used in various industries for visual observation and monitoring of fluid processes.
The Sight Glass manufactured by FlowBiz Export is designed with a transparent window, typically made of tempered glass or durable acrylic, allowing operators to inspect the fluid flow within a pipeline or tank visually. It offers a clear and unobstructed view, enabling real-time monitoring and analysis of critical parameters. Engineered for direct installation onto process vessels, storage tanks, and mixing indicators, our Tank-Mounted Sight Glasses combine structural durability with a functional design across India and international markets.
Every tank-mounted sight glass assembly undergoes 100% rigorous hydro-pneumatic sealing tests and glass optical clarity audits before leaving our Rajkot factory floor.
| Engineering Parameter | Certified Product Specifications & Compliance Codes |
| Design Standards | Fully compliant with DIN 28120, DIN 28121, and ASME Section VIII rules |
| Testing Standards | 100% verified to API 598 pressure limits & structural containment metrics |
| Structural Profile | Circular Weld-On or Bolt-On Pad-Style Window configurations |
| Size Portfolio Range | Complete standard range from 2 inches to 12 inches (15mm to 50mm) |
| Pressure Class Control | Engineered for structural safety from vacuum up to Class 150# / PN16 grids |
| Vessel Wall Interface | Weld-On Base Flange or Bolt-On Companion Flange layouts |
| Body Construction MOC | Carbon Steel, Premium Mild Steel (MS), SS304, or SS316 Stainless Steel |
| Window Lens Material | Toughened Tempered Borosilicate Glass or Impact-Resistant Acrylic |
| Sealing Gasket Cushion | Chemical-Resistant PTFE, EPDM, Viton, or Graphite Gaskets |
| External Visual Finish | Heavy-duty, industrial-grade protective coating finished in a Silver Finish |
HEAVY-DUTY RETAINING TOP FLANGE +=================================+ | [ PTFE Cushion Gasket ] | +---------------------------------+ | TOUGHENED TEMPERED GLASS | <--- Clear, High-Pressure | TRANSPARENT WINDOW | Observation Window +---------------------------------+ | [ PTFE Cushion Gasket ] | +=================================+ WELD-ON BASE FLANGE / TANK WALL Our Tank-Mounted Sight Glasses provide a clear, uninterrupted view of tank contents, aiding in effective monitoring and management of industrial processes. The heavy-thickness transparent window provides an unobstructed viewport into closed storage or pressurized systems. This enables real-time monitoring of fluid turbulence, reaction progress, color shifts, liquid level metrics, and foaming conditions directly from the plant floor.
The Sight Glass manufactured by FlowBiz Export also contributes to enhanced safety in industrial processes. Because operators can quickly identify any abnormalities, crystallization buildup, or potential process issues through the thick glass window, they can execute timely interventions and mitigate risks. This proactive approach ensures a safer working environment and helps maintain the entire system's structural integrity without breaching the vessel's internal atmosphere.
Our assemblies are crafted from premium quality mild steel (MS) or high-alloy stainless steel to resist external distortion under intensive thermal cycles. The robust exterior is finished in an attractive silver coating, providing excellent long-term protection against rust, external moisture, and aggressive chemical washes common on industrial facility floors.
We provide extensive customizability regarding glass thicknesses, integrated wiper blades, and internal illumination lamps. The use of standard sizes ensures easy compatibility with existing tank setups, simplifying field integration and reducing engineering layout timelines.
Our certified tank sight windows are designed for widespread deployment across multiple demanding processing environments:
Storage and Processing Tanks: Visual tracking of bulk liquid volumes, chemical levels, and raw feedstock levels.
Chemical Processing & Petrochemical Refineries: Monitoring volatile fluid blending, solvent separation, and acid settlement inside reaction vessels.
Pharmaceutical & Beverage Plants: Inspection of active ingredient batch uniformity, fermentation foaming, and syrup color validation under strict sanitization standards.
Water Treatment & Industrial Utilities: Visual monitoring of coagulation blocks, effluent accumulation, and sedimentation tank levels.
As a reputable manufacturer based in Rajkot, India, we prioritize quality at every production stage. Our sight glasses undergo strict quality checks to guarantee strength, longevity, and optimal performance in demanding industrial settings. We support global clients by exporting these products, maintaining consistent international standards, complete material test report (MTR) tracking, and prompt delivery to cater to diverse industrial needs.
A: Tank mounted sight glasses are permanently installed on storage or processing tanks to allow visual inspection of internal liquid levels, chemical clarity, and fluid movement. This helps operators ensure efficient and safe industrial operations by providing real-time monitoring without opening the tanks or breaking process seals.
A: Our sight glasses are manufactured using high-quality mild steel (MS) or premium stainless steel with a silver finish, ensuring robust performance, high resistance to corrosion, and structural reliability under harsh industrial conditions. Their good quality construction makes them ideal for continuous use in demanding environments.
A: Sight glasses should be installed during the initial tank setup or when visual monitoring of internal contents becomes necessary. Component replacement is recommended if the glass window becomes clouded due to chemical etching, physically scratched, or otherwise impairs internal visibility, ensuring complete safety and operational efficiency.
A: To place an order, contact our Rajkot sales team directly with your required specificationssuch as nominal viewing diameter, base wall connection style (weld-on vs. bolt-on), process chemical properties, and operating pressure/temperature profiles. Our team will assist you through product selection, provide quotations, and coordinate prompt delivery worldwide.
A: Standard size sight glasses simplify the initial installation and long-term replacement process, ensuring perfect compatibility with common tank nozzles and standard fittings. This helps significantly reduce facility downtime, makes routine maintenance and cleaning easier, and guarantees reliable visual monitoring for enhanced safety in industrial operations.
Are you setting up a new batch reactor loop or updating a chemical storage vessel that requires high-strength, low-maintenance direct visual inspection windows? Contact our Rajkot sales and engineering division today to secure a factory-direct quote on our High-Performance Tank-Mounted Sight Glasses, or ask a single relevant question regarding your specific operating pressure class or window lens requirements below to guide the conversation forward.

Price:
Price 600 INR / Unit
Minimum Order Quantity : 1 Number
Material : Stainless Steel / Brass / Carbon Steel
Features : Corrosion Resistant, Easy Observation, Leak Proof
Type : Sight Glass
Valve Size : As per requirement
Price 600 INR / Unit
Minimum Order Quantity : 1 Number
Material : Stainless Steel / Brass / Gunmetal
Features : Corrosion Resistant, Leak Proof, Easy Installation
Type : Sight Glass
Valve Size : Available in all sizes
Price 2500 INR / Unit
Minimum Order Quantity : 1 Number
Material : Stainless Steel (SS304/SS316), Carbon Steel, Brass
Features : Leakproof Design, Easy Installation, Corrosion Resistant, High Visibility
Type : Tank Mounted Sight Glass
Valve Size : 1/2 Inch to 4 Inch
Price 2000.0 INR / Number
Minimum Order Quantity : 1 Number
Material : Stainless Steel (SS304/SS316), Carbon Steel, Brass
Features : 360degree fullflow visibility, corrosion resistance, easy installation
Type : Full View Sight Glass
Valve Size : DN15 to DN200