NRG Global Instruments

The Weld Pad Sight View Glass is a robust visual inspection device designed for permanent, leak-proof installation on tanks, vessels, or pipelines. It features a weld pad mounting method that allows direct welding onto the equipment surface, providing a secure and durable solution for real-time observation of fluids and processes.

The 3-inch Weld Pad Sight Glass is a durable, welded-in visual inspection device designed for safe and direct observation of fluid flow, liquid levels, or process conditions inside tanks, vessels, or pipelines. Featuring a weld pad mounting method, it provides a leak-proof, permanent installation suited for high-pressure and high-temperature industrial applications.

A 4-inch Jacketed Sight Glass is a specialized flow visualization device designed for applications requiring temperature control or thermal insulation of the fluid being observed. Featuring a double-layer construction with an outer jacket, it allows heating or cooling media (such as steam or water) to circulate around the sight glass, maintaining the process fluid at a desired temperature.

• Size:
  • Nominal diameter: 4” (DN100)
  • Suitable for medium to large process lines and tanks

• Construction:
  • Body made from stainless steel (304/316), carbon steel, or alloy steel
  • Viewing window made from thick borosilicate or tempered glass for high pressure and thermal shock resistance
  • Double-wall (jacketed) design with inlet and outlet ports for heating or cooling media circulation
  • Sealed with high-performance gaskets such as PTFE, Viton, or graphite

• Design:
  • Full-view tubular glass for 360° visibility
  • Jacket allows temperature control to prevent freezing, condensation, or overheating of process fluid
  • Flanged or welded ends for secure installation in pipelines or vessels

• Operating Conditions:
  • Temperature range: up to 250°C (depending on materials and jacket media)
  • Pressure rating: typically up to 10 bar, customizable for higher ratings

• Chemical reactors requiring temperature control

• Food and beverage processing with heating or cooling needs

• Pharmaceutical and biotech process vessels

• Oil and gas pipelines with temperature-sensitive fluids

• Water treatment systems requiring freeze protection

• Temperature Control – Maintain process fluid temperature for optimal reaction or flow conditions

• Enhanced Visibility – Full-view design enables thorough visual monitoring

• Durability – Robust materials and construction for demanding industrial environments

• Versatility – Compatible with various heating/cooling media and customizable to your process needs

If you want, I can provide a technical datasheet, detailed drawings, or a quote tailored to your exact specifications and application.

The 3/4-inch Stainless Steel Sight Glass is a compact and durable flow monitoring device designed for visual inspection of fluids in pipelines, tanks, or process equipment. Its stainless steel body ensures excellent corrosion resistance, making it ideal for demanding industrial and sanitary applications.

NRG GLOBAL INSTRUMENTS Manufactures and exporters of Double Window Type Sight Glass (Sight Flow Indicator) in Cast Construction & Fabricated design to meet an industrial requirement of various applications to inspect the process fluid.

In Double Window type Sight Flow Indicator (Sight Glass) Contains Two Toughened Glasses Mounted opposite to each other. NRG GLOBAL Double Window Type Sight Glass (Sight Flow Indicator) available with various thickness and diameter of glass to suit various applications respects to fluid pressure and temperature. Double Window Type Sight Glass (Sight Flow Indicator) is very easy to replace glass without dismantling the whole Sight Glass assembly from process line. Double window type Sight Glass gives better performance in application of Higher Pressure & Temperature.

Wide range of Toughen Glasses available to suit industrial pressure. All toughen glasses standard as per DIN 7080. Sight Glass body material available ASTM A 216 GR. WCB (Cast Carbon Steel), ASTM A 351 GR. CF 8 (Stainless Steel 304), ASTM A 351 GR. CF 8M (Stainless Steel 316), ASTM A 351 GR. CF 3 (Stainless Steel 304L), ASTM A 351 GR. CF 3M (Stainless Steel 316L), ASTM A 351 GR. CN 7M (Alloy 20) and others on request. Body Hydraulic Test Pressure design up to 17 Kg./Cm2. We also manufacturing Jacketed Type Sight Glass & Steam Jacketed Double Window Type Sight Flow Indicator

The Double Window Sight Glass is an advanced visual inspection device designed to enhance safety and reliability in industrial process monitoring. Featuring two parallel glass panes separated by a sealed cavity, it provides superior thermal insulation and an added safety barrier, reducing the risk of glass breakage and preventing fogging or condensation.

NRG GLOBAL INSTRUMENTS Manufactures and exporters of Double Window Type Sight Glass (Sight Flow Indicator) in Cast Construction & Fabricated design to meet an industrial requirement of various applications to inspect the process fluid.

In Double Window type Sight Flow Indicator (Sight Glass) Contains Two Toughened Glasses Mounted opposite to each other. NRG GLOBAL Double Window Type Sight Glass (Sight Flow Indicator) available with various thickness and diameter of glass to suit various applications respects to fluid pressure and temperature. Double Window Type Sight Glass (Sight Flow Indicator) is very easy to replace glass without dismantling the whole Sight Glass assembly from process line. Double window type Sight Glass gives better performance in application of Higher Pressure & Temperature.

Wide range of Toughen Glasses available to suit industrial pressure. All toughen glasses standard as per DIN 7080. Sight Glass body material available ASTM A 216 GR. WCB (Cast Carbon Steel), ASTM A 351 GR. CF 8 (Stainless Steel 304), ASTM A 351 GR. CF 8M (Stainless Steel 316), ASTM A 351 GR. CF 3 (Stainless Steel 304L), ASTM A 351 GR. CF 3M (Stainless Steel 316L), ASTM A 351 GR. CN 7M (Alloy 20) and others on request. Body Hydraulic Test Pressure design up to 17 Kg./Cm2. We also manufacturing Jacketed Type Sight Glass & Steam Jacketed Double Window Type Sight Flow Indicator

Dip Rods and Dip Sticks are simple yet effective mechanical instruments used for measuring the level of liquids—most commonly oil—in tanks, reservoirs, or engines. They function by being manually inserted into the fluid container, then withdrawn to visually inspect the liquid level marked on the rod or stick.

Double Window Sight Flow Indicators are advanced visual flow monitoring devices featuring two parallel glass windows separated by a cavity. This design enhances safety and visibility by providing an insulating barrier between the process fluid and the environment, reducing the risk of leaks and glass breakage while improving thermal insulation.

The Jacketed Double Window Type Sight Glass is a specialized industrial sight glass designed for applications requiring enhanced temperature control and superior visual clarity. Featuring a double-window assembly within a jacketed body, this sight glass enables heating or cooling media circulation between the windows, preventing condensation, freezing, or thermal damage while offering a clear and safe observation window.

A PP Lined Double Window Sight Glass is a corrosion-resistant flow observation device designed for visual inspection of process media in pipelines. It features two opposing toughened glass windows for a clear, unobstructed view of the fluid, and an internal Polypropylene (PP) lining that protects against aggressive and corrosive chemicals.