Order Sight Glass | DIN-ANSI | Corrosion Resistant Monitoring

Unparalleled Clarity and Corrosion Resistance for Critical Process Monitoring

The GFT9 Videron PFA/Teflon double window sight glass is the ultimate solution for operators requiring continuous, real-time observation of process media in highly corrosive and high-pressure environments. Designed for both vertical and horizontal installations, it offers unmatched durability and reliability with minimal maintenance.

Its virgin PFA lining provides superior chemical resistance against aggressive, reactive, and permeating substances, far outperforming stainless steel or standard plastic alternatives. Additionally, its vacuum-proof anchoring system, secured through mechanical clamping, ensures exceptional sealing integrity, preventing leakage and structural failure—even in extreme process conditions.

With a robust, pressure-bearing metal body and double borosilicate glass windows, the Videron guarantees safe, clear, and obstruction-free monitoring of liquid levels, flow, and fluid conditions. Trusted across industries from chemical processing to pharmaceuticals, food & beverage, and petrochemicals, it sets the standard for reliable and maintenance-free sight glass solutions in the most demanding applications.

About GFT9 – Your Trusted PFA Specialist

  • Custom Manufacturing Excellence:

    Our products undergo rigorous testing and comply with international quality standards, reinforcing our commitment to excellence and instilling confidence in our clients.

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  • Global Supply Network & Streamlined Ordering:

    Leveraging an extensive international network, we ensure reliable delivery and consistent product availability, while our user-friendly, integrated ordering system simplifies procurement for our clients.

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  • Dedicated After-Sales Support:

    Our expert team provides ongoing technical assistance and exceptional customer service, ensuring long-term satisfaction and the operational success of your installations.

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  • Quality Certifications & Adherence to Industry Standards:

    Our products undergo rigorous testing and comply with international quality standards, reinforcing our commitment to excellence and instilling confidence in our clients.

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Proven Performance

Industry Applications

The GFT9 Videron PFA-lined double window sight glass is an indispensable component across various industries requiring safe and continuous observation of liquid properties in challenging environments. Due to its robust construction and superior corrosion resistance make it an essential tool for operators who require dependable, real-time monitoring in demanding industrial application

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Sight Glass Summary

Parameter Value
Name Videron9
Design Norm DIN/ISO | ANSI
Size DN 25-150 | NPS ½-10”
Flange Dimensions DIN 2501 (PN 16) | ASME B16.10 (Class 150-RF LP)
Face-Face-Dimensions PN (EN 558-1), Series 1 | ANSI-B-16.5
Lining Options PFA, PFA/AS, PVDF, PP, UHMW-PE
Body Materials 1.0619 , 1.4308, 1.4408, Carbon Steel / A216WCB, CF8-M or CF-8, Carbon Steel
Pressure Range 16 bar
Temperature Range -10°C up to 150°C
Custom Options 5 mm lining, coatings
Certificates EU Pressure Equipment Directive 2014/68/EU

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Sight Glass Specifications

Dimensional Measurements

Size L ød øk øD Bolting øa Weight
DN 15 130 mm 45 mm 65 mm 95 mm 4 x 14 (M12) 32 mm 3 kg
DN 20 150 mm 58 mm 75 mm 105 mm 4 x 14 (M12) 32 mm 4 kg
DN 25 160 mm 68 mm 85 mm 115 mm 4 x 14 (M12) 48 mm 5,5 kg
DN 40 200 mm 88 mm 110 mm 150 mm 4 x 18 (M16) 65 mm 9,6 kg
DN 50 230 mm 102 mm 125 mm 165 mm 4 x 18 (M16) 80 mm 12,5 kg
DN 80 310 mm 138 mm 160 mm 200 mm 8 x 18 (M16) 100 mm 25,5 kg
DN 100 350 mm 158 mm 180 mm 220 mm 8 x 18 (M16) 125 mm 31,5 kg
DN 150 480 mm 212 mm 240 mm 285 mm 8 x 22 (M20) 142 mm 68 kg
DN 200 600 mm 268 mm 295 mm 340 mm 12 x 22 (M20) 190 mm 88 kg
DN 250 533 mm 220 mm 115 kg
Size L ød øk øD Bolting øa Weight
NPS ¾" 117 mm 42,9 mm 69,8 mm 98,4 mm 4 x 15.9 32 mm 4 kg
NPS ½" 108 mm 34,9 mm 60,3 mm 88,9 mm 4 x 15.9 32 mm 3 kg
NPS 1" 127 mm 50,8 mm 79,4 mm 108 mm 4 x 15.9 48 mm 4,8 kg
NPS 1½" 165 mm 73 mm 98,4 mm 127 mm 4 x 15.9 65 mm 8,8 kg
NPS 2" 178 mm 92,1 mm 121 mm 152,4 mm 4 x 19 80 mm 11,5 kg
NPS 3" 203 mm 127 mm 152,4 mm 190,5 mm 4 x 19 100 mm 22 kg
NPS 4" 229 mm 157,2 mm 190 mm 228,6 mm 8 x 19 125 mm 28,8 g
NPS 6" 394 mm 216 mm 241 mm 279 mm 8 x 22.2 142 mm 62 kg
NPS 8" 457 mm 269,9 mm 330,2 mm 381 mm 12 x 25.4 190 mm 82 g
NPS_10" 533 mm 220 mm

Materials Table & File

Pos. Item Material
Lining PFA, PFA/AS, FEP, PP, PVDF
1 Body 1.0619 (A216 WCB), 1.4408 (CF-8M), 1.4116 (SS), Carbon Steel
2 Cover Plate 1.0619 (A216 WCB), 1.4408 (CF-8M), 1.4116 (SS), Carbon Steel
3 Glass Borosilicate Glass (DIN 7080)
4 Support PTFE/PTFE
5 Bolts and Nuts Stainless Steel A2, A4, a.A./o. o. req

P‑T Diagram

Sight Glass Pressure Temperature Diagram

Collapsible row

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