A compact, explosion-proof light UL-844 & C-UL/CSA C22.2 listed to provide lighting and viewing through a single sight port.
Explosion-proof, UL-844 and C-UL/CSA C22.2 No. 137 listed, electric lighting fixtures are used in hazardous (classified) locations. Lights for single port viewing have been designed to meet the needs of our customers who require lighting and viewing through a single sight glass.
PAPAILIAS, Inc. Series SLEX-100 and REX-100 use a high intensity halogen lamp to provide bright, glare-free illumination of the interior of vessels, tanks, hoppers, silos, mixers, and other normally closed containers in hazardous locations requiring explosion-proof equipment. These fixtures are also available with PAPAILIAS, Inc’s proprietary high intensity LED [HI-LED] light engine technology for extended lamp life and low power consumption.
When it comes to explosion proof light fixtures and lighting for sight glasses, PAPAILIAS is an industry leader in new and innovative technologies. Our industry experience sets us above the competition in lighting the way into your process systems. Various PAPAILIAS, Inc. fixtures feature UL Listings.
High Intensity LED [HI-LED] Hazardous Location Lights
PAPAILIAS, Inc. series SLEX-HI-LED and REX-HI-LED High-Intensity LED compact, explosion-proof light UL-844 & C-UL/CSA C22.2 listed to provide lighting and viewing through a single sight port.
Explosion-proof, UL-844 and C-UL/CSA C22.2 No. 137 listed, electric lighting fixtures are used in hazardous (classified) locations. Lights for single port viewing have been designed to meet the needs of our customers who require lighting and viewing through a single sight glass.
PAPAILIAS, Inc. series SLEX-HI-LED and REX-HI-LED use high intensity LED [HI-LED] light engine technology to rovide bright, glare-free illumination of the interior of vessels, tanks, hoppers, silos, mixers, and other normally closed containers in hazardous locations requiring explosion-proof equipment. These fixtures do not generate excessive heat, feature long lamp life and consume less energy than their Halogen equivalents.
When it comes to explosion proof light fixtures and lighting for sight glasses, PAPAILIAS is an industry leader in new and innovative technologies. Our industry experience sets us above the competition in lighting the way into your process systems.
High-Intensity LED (HI-LED) Feature:
Extended lamp life reduces operating costs
35,000 hour lamp life vs. 1000~2000hrs for halogen
Robust Technology – vibration, heat, dust, and surface oil resistant
Ideal for use with video camera monitoring systems
No Excessive Heat
Continuous operation
No heat transmission into sight glass or vessel
Far less heat generation than a 100 watt halogen bulb
Twice the light at 1/3 the wattage of other LED fixtures
22% more light intensity than a 100 watt halogen bulb
93% less energy than a standard 100 watt halogen bulb
Lasts 98% longer than a standard 100watt halogen bulb
LED array LM80 tested to Energy Star standards
Custom optics provide bright, white, high intensity, uniform light with no hot spots or yellow tint
Sanitary High Intensity LED [HI-LED] Hazardous Location Light Glasses
The SLEX/SVTC and REX/SVTC series Sanitary Explosionproof s light glasses feature a PAPILIAS Inc. industry leading Explosionproof light fitted with an integral clamp type sanitary sight glass. The lens of the sight glass is an integral part of the unit, not a loose part. The standard unit is suitable for 150PSIG and full vacuum with a maximum temperature limit 500°F. Higher temperature and pressure ratings are available.
The anodized aluminum parts provide greater cleanliness and aesthetic appeal, making the unit highly popular for pharmaceutical applications. All wetted parts are machined T316 Stainless Steel (optional materials available), PTFE and glass. By designing a Series SVTC sanitary clamp type sight glass directly into a Series SLEX-/REX lighting fixture, Papailias allows the user to illuminate the contents of a pressurized vessel or pipeline with High-Intensity LED [HI-LED] or 100W Halogen lighting intensity on existing standard sanitary clamp style ferrules.
Explosion-proof, UL-844 and C-UL/CSA C22.2 No. 137 listed, electric lighting fixtures are used in hazardous (classified) locations. Lights for single port viewing have been designed to meet the needs of our customers who require lighting and viewing through a single sight glass.
PAPAILIAS, Inc. series SLEX-HI-LED and REX-HI-LED use high intensity LED [HI-LED] light engine technology to rovide bright, glare-free illumination of the interior of vessels, tanks, hoppers, silos, mixers, and other normally closed containers in hazardous locations requiring explosion-proof equipment. These fixtures do not generate excessive heat, feature long lamp life and consume less energy than their Halogen equivalents.
When it comes to explosion proof light fixtures and lighting for sight glasses, PAPAILIAS is an industry leader in new and innovative technologies. Our industry experience sets us above the competition in lighting the way into your process systems.
High-Intensity LED (HI-LED) Feature:
Extended lamp life reduces operating costs
35,000 hour lamp life vs. 1000~2000 hrs for halogen
Robust Technology – vibration, heat, dust, and surface oil resistant
Ideal for use with video camera monitoring systems
No Excessive Heat
Continuous operation
No heat transmission into sight glass or vessel
Far less heat generation than a 100 watt halogen bulb
Twice the light at 1/3 the wattage of other LED fixtures
22% more light intensity than a 100 watt halogen bulb
93% less energy than a standard 100 watt halogen bulb
Lasts 98% longer than a standard 100 watt halogen bulb
LED array LM80 tested to Energy Star standards
Custom optics provide bright, white, high intensity, uniform light with no hot spots or yellow tint
Papailias sight glass solutions
Circular Sight Glasses
Windows or portals that allow for direct visual access to operational systems, sight glasses are used in a wide range of industries to allow for easy monitoring of equipment and processes. Mounted directly into tanks, boilers, or pipelines, transparent sight glasses — which come in various forms, including tubes, discs, squares, and panels — provide engineers and operators with accurate, real-time information.
Sight glass windows can be made of tempered glass, toughened glass, or annealed glass, and can be constructed in a range of materials to suit specific needs; borosilicate, soda lime, and quartz are some of the most popular choices.
Along with sight flow indicators, sanitary flow indicators, specialty lighting, and other custom glass products, sight glasses are essential components of industrial process observation systems.
Custom Sight Glass Solutions from Papailias
At Papailias Inc., we’ve been helping engineers accurately monitor operations since 1976. Working closely with your team, our expert engineers can design and manufacture round sight glasses to custom sizes and viewing dimensions, and we offer a wide range of material options to suit your specific system and requirements.
In addition to circular sight glasses and other sight glass shapes, we also provide flow indicators, level gauges, sanitary flow indicators, and a complete line of custom glass products and components for all types of process observation needs.
To learn more about our sanitary, industrial, and custom sight glass solutions, check out our circular sight glasses catalog or reach out to the team today to discuss how we can help with your process monitoring needs.
Unique Sight Glass Variations
Papailias offers an array of unique sight glass variations for all applications and project requirements. Some of these include:
Borosilicate, or hard, glass discs — For exceptional thermal performance, clarity, and toughness
Hardened soda lime glass discs — For lower-pressure applications
Sanitary-grade sight glasses — For leak-tight, tool-less assembly to prevent contamination in food, dairy, and pharmaceutical applications
Industrial-grade sight glasses — Designed specifically for toughness in high-temperature, high-pressure, and highly corrosive environments
Weld-neck style sight glasses — For attachment to stub end pipes
Threaded-style sight glasses — For use with stub end pipes, ANSI flanged nozzles, or vessel studding outlets
Flanged sight glasses — Designed specifically to fit existing ANSI flanged nozzles or vessel studding outlets
Rectangular sight glasses — For particular vessel geometry
Quick-opening sight glasses — For easy sampling, cleaning, and maintenance access
Double-window sight glasses — For an extra layer of protection and reliability against stress concentration, thermal shock, corrosion, mechanical damage, and overall failure
Curved sight glasses — For a custom fit to curved or cylindrical vessels and pipes
Papailias sight glass solutions
High Pressure Sight Flow Indicators
Providing a reliable, efficient way to monitor the state of operations in industrial systems, sight flow indicators allow engineers and manufacturers to keep an eye on processes in real time. Pharmaceutical manufacturing, wastewater treatment, and any industry relying on the efficient management of fluids relies upon the accuracy and clarity of inline flow indicators.
By creating an opportunity for quick, on-the-spot viewing, these indicators enhance both the ease and precision of process observation. At Papailias, we offer a complete range of sight inline flow indicators, including high-pressure models, to suit any configuration.
High Pressure and Heavy-Duty Systems
Pressure vessels, coolant tanks, and oil reservoirs are just a few of the many applications requiring high-pressure sight flow meters and inline flow indicators for efficient process observation and monitoring.
Other industries and utilizations include:
Chemical manufacturing and chemical lines in industrial plants
Pharmaceutical manufacturing systems
Food and beverage manufacturing, including dairy systems
Fermentation and distilling systems, including wine and beer manufacturing
Biogas plants
Cosmetics processing
Wastewater treatment and municipal plants
Power generation
Oil and natural gas drilling and storage
High-Pressure Flow Indicators, Series FIS/HP and FIF/HP
Sight flow indicators can be engineered to maximize system efficiency based on a specific pipeline’s performance expectations, standard pressure levels, and general contents. Unique configurations are available, offering reliable solutions customized for any system.
Common inline flow indicator options include:
Plain, with bi-directional functionality in any orientation
Flapper, indicating the flow and velocity of media via a hinged and weighted stainless steel flapper
Rotor, for simple bi-directional and multi-oriented flows
Drip tube, designed for low, intermittent flow rates
Flutter, for unidirectional monitoring of low-flow gases and liquids
Ball, for easy positive flow identification in any direction
Meeting the ANSI B2.1 standard, these feature NPT-threaded ends for inline on-the-spot viewing of pipeline contents. Optional configurations can include flappers, drip tubes, and rotary flow indicators. High-performance add-ons include socket welds, double-window assemblies, and silver brazing connections. The Papailias team offers components with ratings ranging from HP3-300 PSIG to HP6-600 PSIG, with full ANSI Class 300 and 600 ratings available.
These indicators feature flanged ends and are designed to meet ANSI B16.5 and B16.24 standards. Offering performance and configuration options similar to those of the FIS/HP Series, these versatile components can also include DIN flange connections. Ratings range from HP3-300 PSIG to HP6-600 PSIG, with full ANSI Class 300 and 600 ratings available.
High-Pressure Sight Flow Indicators and Custom Process Observation Equipment from Papailias
In addition to high-pressure flow indicators, Papailias also offers custom sight glasses, sight glass accessories, armored level gauges, custom lighting, and fused sight glasses to provide our clients with the ideal systems for their specific process observation needs.
Since 1976, tools from Papailias have been helping engineers solve some of the industry’s most challenging problems, and our versatile solutions continue to help keep day-to-day operations flowing smoothly in companies around the world.
Papailias sight glass solutions
Sight Flow Indicators
In a process system, sight flow indicators offer an easy and efficient way to monitor fluids. Our extensive line of sight flow indicators is designed for varied applications in numerous industries.
Offering standard, high pressure, full view, and PTFE lined sight flow indicators in many sizes means that we are the one-stop source for all indicator equipment. Our standard and high pressure units can be configured with flapper, drip tube, or rotary flow indicators and feature bodies constructed from bronze, carbon steel, or 316 stainless steel and borosilicate glass.
Full view sight flow indicators are constructed from carbon steel or stainless steel with flanged or threaded ends. For high pressure applications, extra heavy wall cylinders are available.
To observe the flow of corrosive materials, our PTFE lined sight flow indicators are the ideal choice. All parts of this indicator are lined with PTFE (except the borosilicate glass) making them inert to corrosive fluids such as chlorides, sulfates, bleach solutions, solvents, acids, and phenols.
For accurate monitoring of fluids in a process system, sight flow indicators are an invaluable tool for determining where problems are occurring while maintaining that systems are working properly. With over 30 years in manufacturing sight flow indicators and process system equipment, Papailias is continuing to lead the industry in product innovation and manufacturing.
Papailias sight glass solutions
Sight Glasses
Papailias manufactures the highest quality sanitary and industrial sight glasses on the market today. Designed to view conditions within process vessels, sanitary sight glasses suit applications in the food, dairy, and pharmaceutical industries, while industrial sight glasses are ruggedly built to handle harsher environments.
We offer a full range of process observation equipment to meet the needs of various types of process vessels and reactors. Our products can be constructed from a variety of ASME Section VIII acceptable metals including carbon steel and 304, 304L, 316 and 316L stainless steel to meet the needs of any system. Virtually any machinable alloy can be specified to meet user requirements and we also offer a full complement of optional accessories such as lighting, wipers, and washers.
Industrial sight glasses are available as circular or rectangular versions with glass that can withstand high temperatures and pressures. We offer numerous viewing dimensions and can manufacture custom sizes upon request.
Sanitary sight glasses are a circular system made with a leak-tight, tool-less assembly/disassembly standard sanitary clamping system to prevent any type of contamination from entering into the process stream and making for easy cleaning or sampling. They can be specified without the welding ferrule for mounting to the vessel connections. Our BoroAlloy™ Clamp Glass/Metal Alloy products are approved for sanitary applications, including CIP and SIP, and feature a single piece construction and borosilicate glass.
With more than 30 years of experience in designing and manufacturing sight glasses for sanitary and industrial applications, Papailias can be counted on for reliable and fail-proof products.
