Stainless Steel Line Inline Flow Tubular Sampling Tank Welded Sight Glass (JN-SG1004)

Product Description

Stainless Steel Line Inline Flow Tubular Sampling Tank Welded Sight Glass (JN-SG1004)

A  is a precision inline visual inspection device designed for real-time observation of fluid conditions inside pipelines. Available in both industrial-grade and sanitary-grade configurations, it can be adapted to different process requirements.

The Sanitary Sight Glass features smooth stainless steel surfaces, hygienic welds, and a crevice-free internal design, making it suitable for food, beverage, dairy, pharmaceutical, and biotechnology applications where cleanliness and product purity are critical.

The Industrial Sight Glass is designed for demanding process environments, offering high mechanical strength, pressure resistance, corrosion resistance, and reliable long-term operation. It is suitable for chemical processing, water treatment, utilities, and general industrial pipelines.

The integrated viewing window enables direct visual monitoring of flow, clarity, color, and process conditions, helping operators identify abnormalities and improve process control without interrupting pipeline operation.

Sanitary Sight Glasses are typically installed on hygienic processing pipelines to provide clean and reliable visual inspection of liquids or process media. They are widely used in dairy, beverage, food, pharmaceutical, and biotech production lines.

Industrial Sight Glasses are installed on chemical, water treatment, utility, and other industrial pipelines to monitor fluid flow, clarity, and operating conditions.

By providing real-time visual access to the pipeline, the sight glass helps operators detect flow abnormalities, verify process conditions, and improve system reliability, while the stainless steel construction provides durability for long-term use.

 
Size Range: DN25-DN150 or 1"-6"
Connection Type: Quick-release, Thread, Welding, Flange
Material: 304 / 316L
Glass Type: Tempered glass, Borosilicate glass
Pressure Range: 0-10 bar (customizable higher)
Temperature Range: -20°C to 150°C (depending on glass and seal material)
Seal Material: EPDM, PTFE, Silicone
Optional Light: Optional LED light sight glass
 

Quality guarantee of 3 years

ISO 9001, FDA, SGS approved materials

7-10 days fast delivery on urgent requirements

20 years' Rich exporting experience to make you easy and happy with custom work
 

	Tubular Sight Glass	Union Type Sight Glass (DIN 11851/SMS)	Flange-Type Viewing Sight Glass with LED	Sight Glass with Wiper
Specifications/ Sizes	Sizes 1"-4" (DN25-DN100); working pressure typically up to ~10 bar (150 psi)	DN40-DN80 typical (up to DN150 available); surface finish ≤0.8 μm Ra	Flanged mount (ANSI/DIN); pressure per nozzle class	DN50-DN150 common; pressure up to ~10 bar; temp up to ~150 °C; manual wiper clears viewing pane during operation.
Working Principles	Transparent borosilicate tube installed inline for continuous visual inspection of flow.	Threaded union clamps glass disc between male/female ends for sanitary pipelines.	Flanged sight window on vessel/nozzle, paired with LED light for illumination.	Rotary or reciprocating external wiper sweeps inner glass face to remove condensate/films.
Key Features	Unobstructed sightline, easy CIP/SIP (depending on model), clamp or union ends.	Hygienic union connection; quick disassembly; optional wiper or light.	Integrated or bolt-on LED (non-Ex or Ex-rated); wiper optional; improved visibility in dark vessels.	Maintains visibility with foaming/viscous fluids; retrofit kits available; optional light port.
Suitable Application	Unobstructed sightline, easy CIP/SIP (depending on model), clamp or union ends.	Dairy standards lines, fermenters, filters, reactors.	Tanks, reactors, dark or foaming processes; ATEX areas with Ex-rated lights.	Brewing, sauces, syrups, crystallizers, emulsions-anywhere fouling blocks view.

  

Product Description

Stainless steel sanitary fittings are widely used in high cleanliness industries and have the following significant feature:

• Hygienic sanitary design provides contamination-resistant fluid observation, with smooth surfaces and hygienic connections ideal for food, beverage, dairy, pharmaceutical, and biotechnology applications.
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• High-clarity sight glass enables real-time visual monitoring of fluid flow, color, clarity, and process conditions, helping operators quickly identify abnormalities.
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• Smooth internal surfaces support easy cleaning and sterilization, reducing residue accumulation and supporting efficient CIP/SIP processes in sanitary production systems.

• Heavy-duty industrial construction provides excellent pressure, temperature, and corrosion resistance, making industrial sight glasses suitable for chemical, water treatment, and demanding process pipelines.
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• Inline flow-through design maintains stable fluid circulation while allowing continuous observation without significantly disrupting the pipeline flow, improving process efficiency and control.
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• Reliable stainless steel structure combines durability and long-term stability, helping reduce maintenance requirements and providing dependable visual inspection in both sanitary and industrial fluid handling systems.

Product Parameters

Packaging & Shipping

 

FAB

Feature	Advantage	Benefit
Industrial-Grade Welded Tubular Body - Constructed from thick stainless steel, designed for high-pressure industrial piping systems. Hygienic-Grade Sanitary Surface Finish - Smooth internal finish prevents contamination and supports CIP/SIP cleaning. Inline Flow Design - Enables continuous process sampling without interrupting the main line. Welded Sight Glass Window - Provides clear visual monitoring of fluid flow and quality. Compact and Modular Configuration - Suitable for both industrial pipelines and sanitary process lines.	Industrial-Grade Structural Strength - Handles high-pressure, high-temperature flow reliably. Hygienic-Grade Contamination Prevention - Seamless welded design minimizes bacterial growth and fluid stagnation. Real-Time Visual Monitoring - Integrated sight glass enables operators to inspect flow and detect issues quickly. Reduced Maintenance - Stainless steel construction resists corrosion, wear, and scaling. Versatile Installation - Compatible with industrial chemical pipelines and food or beverage sanitary lines.	Ensures Process Safety - Industrial-grade construction prevents leaks and pressure failures. Maintains Product Quality - Hygienic-grade design avoids contamination during sampling. Facilitates Quick Troubleshooting - Sight glass allows visual inspection of flow, color, and consistency. Increases Operational Efficiency - Inline configuration eliminates the need to stop the process for sampling. Supports Multiple Industries - Ideal for chemical, pharmaceutical, beverage, and food processing applications.

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Company Profile

 

 

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About us
JoNeng was established in July 2007, strategically situated in Wenzhou, China. Boasting a team of approximately 100 skilled workers, our expansive factory spans 6800m2, dedicated to delivering exceptional valve and pipe solutions with precision and excellence.
Under the esteemed Joneng enterprise, we proudly operate three specialized manufacturing facilities. Jiayuan excels in producing elbow, tee, and reducer fittings in both sanitary and schedule grades; Lingdong focuses on precision-engineered ferrules, unions, sight glasses, and butterfly valves using advanced CNC technology; while Ezo specializes in designing high-quality manhole covers and small tanks to meet diverse industrial needs.

Mainly manufacture
Stainless steel butterfly valves, ball valves, check valves, CPM valves, and diaphragm valves, meticulously designed for reliability and precision in fluid control systems.
Stainless steel sanitary and industrial-grade elbow, tee, reducer, ferrule, and union fittings, engineered for seamless connectivity and outstanding performance.
Stainless steel sight glass, spray ball, manhole cover, flanges, strainers, filters, and pipe clamps, offering comprehensive solutions to meet your varying operational demands.
Stainless steel centrifugal pumps, CIP pumps, emulsifying pumps, and rotary pumps, ensuring efficient and effective fluid handling and processing across diverse industries.

International standards
Our products are expertly crafted to align with SMS, DIN, AS, BS, BPE, JIS, ISO, ANSI B16.5, ASME, and other international standards. We also offer the flexibility of customized solutions. Our high-quality products have successfully reached over 100 countries, including Europe, America, the Middle East, Australia, Turkey, Iran, and Thailand, showcasing our global presence and commitment to excellence.
Wenzhou Joneng Valves Co., Limited proudly extends its reach to a diverse array of countries and regions including Europe, America, the Middle East, Australia, Turkey, Iran, Thailand, and more, amassing a remarkable presence in over 100 countries worldwide.
Joneng stands as a paragon of quality assurance, adorned with the prestigious CE, PED, and ISO 9001 certifications, which exemplify our unwavering dedication to superior quality management. Our products also adhere to FDA standards, reinforcing trust and reliability at every step.

 

 

Extensive inventory of pipe fittings

Our extensive inventory of pipe fittings features an array of stainless steel options: elbows, tees, reducers, unions, ferrules, butterfly valves, check valves, and ball valves, empowering us to deliver goods promptly and with unparalleled efficiency.

3-year guarantee and 24 hours 
concerns

Our pledge to excellence is embodied in our promise of swift 24-hour resolution for any quality complaints, nurturing customer satisfaction while driving continuous enhancement.

At Wenzhou Joneng Valves Co., Limited, we extend an unmatched 3-year guarantee on all stainless steel components, offering you peace of mind. Should any quality issues surface with our valves and fittings, please do not hesitate to contact us. We assure a swift response with action initiated within 24 hours to resolve any concerns effectively.

Welcome to the factory
√ With 17 prolific years of dedicated expertise in the industry, we embody an unwavering commitment to quality and innovative solutions.

√ Spanning an impressive 6800m2, our state-of-the-art facility is adeptly equipped to manage diverse production demands with flawless efficiency.

√ Our skilled workforce of 100 employees fuels our engine of excellence and propels our growth trajectory.

√ Thriving in over 100+ countries, our expansive global reach is a testament to the trust and satisfaction our international clientele repose in us.

√ With a formidable network of 1000+ partners worldwide, our collaborative endeavours continue to drive success and shared aspirations.

 

OUR PRODUCTION CAPACITY 

 

Production Lines	Stainless steel sanitary pipe fittings' line, machining line, sanitary manhole line,
Product Range	Sanitary butterfly Valve, sanitary diaphragm valve, sanitary pipe fittings, union, ferrule, sight glass, manhole cover, safety valve, sampling valve...
Year Established	2007
Factory Size in Square Meters	5000M2
NO. OF TOTAL STAFF	130
Production Capital	8 000 000 USD
Detail capacity	Manhole covers	12000nos
	Pipe fittings	150000nos
	Ferrules, unions, connectors	200000nos
	Diaphragm valves	15000nos
	Butterfly valves	20000nos
Investment in Manufacturing Equipment	750000USD
Details of equipment	For machining parts 29 nos of LG Mazak CNC Machines 4 nos of local CNC machines 2 nos of automatic CNC center 12 nos of plain lathe For pipe fittings 4 nos of press 3 nos of cutting machine 3 nos of chamfering machine We also have the following quipments 4 nos of polishing machine 12 nos of grinding machine 3 nos of laser marking machine 3 nos of pressure testing machine 1 nos of temperature testing machine 3 nos of spectro instrument 1 nos of surface roughness device
Primary Competitive Advantages	Strict inspection, honest business way, fast revert on order problem
Stocked materials	Big quantity for raw forging of butterfly valve, diaphragm valve, ferrule, union, adapters, pipe fittings, clamps, sight glass, safety valve, manhole cover,
OEM Services Provided	Yes
Design Service Offered	Yes
Sales Volume	6 000 000 USD
Export Percentage	80%
MAIN MARKET	USA, Germany, Hungary, Canada, Thailand, Holland, England, South Africa, Indonesia, Saudi, India, New Zealand, Australia, Middle East...
Own Brand Name	JoNeng

Certifications

FAQ

 

1. Are you a trading company or factory? 
We are a manufacturer factory and we also have our own exporting license. 

2. Do you have certificate? 
Yes, ISO, FDA, LFGB, CE, PED certificate. We also have some patents in design. 

3. How do you control the quality? 
In quality control, the most important is to avoid material mixing. 
In our factory, 3 spectro PMI machines are used in raw material warehouse, production plant, dispatch plant. 
Pressure inspecting machine, PMI machines, RA roughness spector, hardness testing machine...All machines help in inspection. 
2 staff inspect during production in different sections
5 staff inspect the finished productions to avoid shortage, poor quality, mixing chemical...

4. How many factories do you have?
Under the esteemed Joneng enterprise, we proudly operate three specialized manufacturing facilities. 
Jiayuan excels in producing elbow, tee, and reducer fittings in both sanitary and schedule grades;
Lingdong focuses on precision-engineered ferrules, unions, sight glasses, and butterfly valves using advanced CNC technology; 
while Ezo specializes in designing high-quality manhole covers and small tanks to meet diverse industrial needs.

5. If there is any quality problem, how do you solve it? 
We are very proud that we never make one customer leave us. We are not 100% perfect, there is some quality problem. 
Normally replacement, or compensation, or resend goods to customers as per the condition. To be discussed as per condition. 

6. How long is your delivery time? 
For normal products in 7-10 days; For bulk order, in 15-25 days. It depends. 

7. Warranty time? 
3 years warranty for all of our stainless steel products. Gaskets or the easy broken parts are not included due to the different application for customers. 

8. Why trust in us? 
14 years in this industry. It makes us professional. Good credit in this market. 
All of our machines are the assurance of our responsibility. 

9. Free sample? 
Free samples can be provided for first cooperation under sincere cooperation. 

10. What is the MOQ? 
1PCS MOQ is welcome for starting cooperatoon

11. Material certificate? 
Material certificaite, mill certificate, pressure testing certificate, roughness certificate, measure certificate, RT certificate, ...Can be available, please declare when inquiry us. 

12. More questions are appreciated.