Stainless Steel Four-Way/Straight-Through Flange Sight Glass

• Customization: Available
• Certification: CE
• Shape: Equal
• Model NO.: sight glass
• Head Code: Round
• Connection: Flange
• Material: Stainless Steel
• Technics: Forged
• Color: Silver
• Producing Standard: DIN/GB/ISO
• Sealings: EPDM or NBR or PTFE
• Transport Package: Carton
• Specification: DN25~DN200
• Trademark: SafetySS
• Origin: Wenzhou
• HS Code: 8481804090
• Production Capacity: 1000PCS/Week
• Package Size: 20.00cm * 30.00cm * 20.00cm
• Package Gross Weight: 1.000kg

Product Description

Sanitary Stainless Steel Four-Way/Straight-Through Flange Sight Glass

 

Product Description

1. Product Overview
Sanitary stainless steel four-way/straight-through flange sight glasses are critical observation devices in industrial pipeline systems, widely used in petrochemical, pharmaceutical, food, and chemical industries to monitor the flow state, color changes, and reactions of liquids, gases, or vapors in real time. Key features include:  
- Sanitary Design: Mirror-polished surfaces (Ra ≤ 0.8μm) compliant with **GMP, 3A, and IDF standards**, suitable for high-cleanliness environments (e.g., food and pharmaceuticals).  
- Corrosion Resistance: Constructed from **SUS304, 316L, 2205 duplex steel**, or optional fluoropolymer-lined/FRP materials for harsh chemical media.  
- Structural Versatility: Available in four-way (360° observation) or straight-through configurations, adaptable to diverse installation scenarios.  


2. Technical Specifications 
1. Materials  
   - Body: 304, 316L, 2205 duplex steel, 904L stainless steel.  
   - Window: Tempered borosilicate glass (≤280°C), quartz glass (≤1000°C), pressure-rated 0.6-2.5 MPa.  
   - Seals: NBR, PTFE, or graphite gaskets (high-temperature applications).  

2. Operating Conditions 
   - Temperature Range:  
     - Stainless steel body: -196°C to +600°C.  
     - Glass window: Up to 1000°C (quartz).  
   - Pressure Range: 0.6-2.5 MPa (standard); customizable up to 10 MPa (quartz).  

3. Dimensions & Standards
   - Port Sizes: DN20-DN200; custom sizes available.  
   - Flange Standards: HG, GB, ANSI, JIS, DIN; complies with **Chemical Industry Standards HGJ501-502-86**.  


3. Core Structure & Features
1. Components  
   - Base plate, viewing window, sealing gaskets, flanges, and fasteners.  
   - Four-way type enables multi-angle monitoring; straight-through suits linear pipelines.  

2. Functional Advantages  
   - Leak-proof Sealing: RF, MFM flange faces for high-pressure environments.  
   - Thermal Shock Resistance: Tolerates ≤60°C abrupt temperature changes.  
   - Easy Maintenance: Quick-disassembly design reduces downtime.  


4. Applications 
- Chemical Industry: Monitors corrosive media (acids, alkalis) to prevent crystallization or blockages.  
- Pharmaceutical & Food: Ensures transparency and hygiene in sterile pipelines (e.g., drug solutions, dairy).  
- Energy & Environmental: Tracks high-temperature steam, oils, or wastewater in treatment systems.  


5. Installation & Maintenance Guidelines 
1. Installation
   - Clean glass with alcohol wipes (avoid acidic cleaners).  
   - Tighten bolts diagonally and evenly to prevent glass cracking.  
   - Use graphite gaskets for high-temperature or PTFE for cryogenic environments.  

2. Maintenance 
   - Regularly inspect glass for corrosion (shorten intervals in harsh conditions).  
   - Replace glass with intact sealing surfaces to avoid leaks.  


 

Product Parameters

Steel Parts	SS304;SS316L
The material of glass	silicon boride glass
Sealings	EPDM or NBR or PTFE
Working temperature	-20~+135'C(when the sealing isEPDM

Detailed Photos

 

Packaging & Shipping

Certifications

About US

FAQ

Q:How do you pack?
A:Plastic bags-------(Paper boxes)-------Cartons-------Plywood cases

Q:How long is the quality guarantee period?
A:We supply 6 to 12 months for quality guarantee according to customers' using frequency.

Q:How can you guarantee the quality of products?
A:First of all, we have the numerical control device to manufacture products accurately. Then our quality inspectors will test products one by one to make sure every flange or fitting we sell is qualified.

Q:How can I check your factory situation while it's difficult for me to come to China.
A:We have photos and videos on our website, It shows every step of the manufacturing.
Alternatively, I can take videos or photos of our factory and send them to you.

Q:What is your lead time?
A:It's around 15 days normally. If we have the products in stock, it will be about 5days.

Q:Can you print our Logo on the valves/Fittings?
A:Yes, we can totally produce products according to your this kind special request, even manufacture it based on your drawing

Q:Are samples available to be sent with free?
A:It depends on what product you need. There are hundreds of products we sell. You can contact us for particular answer.

Q:Do you have a minimum quantity of the products?
A:No, we will build business with you with even 1pc. We believe this cooperation will be a long-term relationship for our high quality, competitive price and good after-sale service.

Q:Where are the main markets for your products?
A:We hope to make business with companies from all over the world. And for now, our flanges and fittings have been exported to especially in North America, South America, South Asia, Europe and Middle East.

Q:Are you a factory or trading company?
A:We are a factory specialized in manufacturing flange and fitting over 10 years.