Sight Glass Valve | CI WCB SS304 SS316 | Inline Wye Bull’s Eye | Supplier India

Description

Sight Glass Valve Supplier India | CI / WCB / SS304 / SS316 | Inline / Reflex / Bull’s Eye | KELOR

Supplier: Krishna Industries (KELOR) – Ahmedabad, Gujarat, India
Established: 2017 | GSTIN: 24AKLPP6499B1ZT | IEC: AKLPP6499B
MOQ: 10 Nos | Sizes: 15mm–300mm | Glass: Borosilicate / Toughened
Applications: Chemical | Pharmaceutical | Food & Beverage | Steam | Dairy | Water Treatment

Introduction – Sight Glass Valve Supplier India

Krishna Industries (KELOR), based in Ahmedabad, Gujarat, India, is a trusted B2B supplier of Sight Glass Valves sourced from verified Indian manufacturers. We supply Sight Glass Valves in Cast Iron, WCB, SS304, SS316, and SS316L body — borosilicate and toughened glass — inline full view, wye pattern, bull’s eye, and reflex types — flanged, threaded BSP / NPT, and tri-clamp ends — sizes 15mm to 300mm — PN10, PN16, PN25, and Class 150 / 300.

A Sight Glass Valve is an inline valve fitting with a transparent glass window that allows operators to visually inspect fluid flow inside a pipeline — without shutting down, without opening the pipeline, and without instrumentation. Operators can confirm flow direction, detect air pockets or bubbles, monitor fluid colour and clarity, check for contamination, and verify flow is present — in real time, at a glance. In steam service, reflex sight glass valves show the water-steam interface using optical prism technology.

Sight Glass Valve vs Sight Glass Indicator: A sight glass valve has an integrated valve body — it can be isolated and removed from service while the pipeline remains in operation. A sight glass indicator is a simple glass window fitting with no valve function — the pipeline must be shut down for glass replacement. For critical service lines, always specify sight glass valve over sight glass indicator.

Sight Glass Valve Types — Complete Guide

Glass Material Guide — Borosilicate vs Toughened

Rule: Specify borosilicate glass for any application involving steam, chemical media, high temperature above 150°C, pharmaceutical GMP, or food and beverage FDA contact. Toughened glass for ambient temperature water and general utility lines only.

Body Material and End Connection Guide

Pharmaceutical and Food Grade — SS316L Tri-Clamp Sight Glass

A separate and increasingly important buyer segment in India — pharmaceutical plants, API manufacturers, food processing facilities, and dairy plants require sight glass valves that meet GMP (Good Manufacturing Practice) and FDA food safety requirements:

• Body: SS316L (low carbon — no sensitisation, smooth cleanable surface)
• Glass: Borosilicate — FDA accepted, chemically inert, non-leaching
• End Connection: Tri-clamp (TC) per ISO 2852 / DIN 32676 — tool-free disassembly for CIP / SIP cleaning
• Surface Finish: Internal Ra ≤ 0.8 µm (32 Ra) electropolished — no crevices for microbial growth
• Gasket: EPDM or PTFE — FDA 21 CFR compliant materials
• Certification: 3-A Sanitary Standards compliant on request

Krishna Industries supplies SS316L tri-clamp sight glass valves for Indian pharmaceutical, API, injectable water, food and beverage, and dairy plant applications. Confirm your hygienic standard — GMP, FDA, 3-A, or EHEDG — when placing RFQ.

Technical Specifications

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Applications in Indian Industries

• Pharmaceutical plants — SS316L tri-clamp — API manufacturing, WFI water lines, injectable buffer tanks, CIP return lines — GMP compliant
• Food and beverage processing — SS316L tri-clamp — milk lines, juice, syrup, starch, beverage — FDA food contact compliance
• Dairy plants — SS316L SMS or tri-clamp — milk pasteuriser inlet/outlet, cream lines, separator feed
• Chemical plants — SS304 / SS316 flanged — chemical reaction monitoring, solvent lines, acid and alkali service — borosilicate glass
• Steam and boiler systems — WCB flanged, reflex glass — boiler drum level, condensate return, steam trap outlet monitoring
• Water treatment plants — CI or WCB flanged — filtered water quality check, clarifier outlet monitoring
• Oil and gas — WCB flanged — fuel oil, lube oil, condensate flow monitoring
• Power plants — WCB / alloy steel — boiler feed water, condensate, cooling water monitoring
• Paint and pigment plants — SS316 — colour monitoring, pigment dispersion check
• Sugar refineries — SS304 / SS316 — juice clarification monitoring, syrup concentration check

EPC and Project Buyers — Bulk Supply

• Complete instrumentation and piping BOM supply — sight glass valves with gate valves, globe valves, Y strainers in single order
• All body materials and types in single consolidated order — CI, WCB, SS304, SS316, SS316L together
• Material Test Certificates (MTC) for SS grades
• Borosilicate glass compliance certificates per BS 3463 / DIN 7080
• Surface finish certificates for pharma and food grade (Ra ≤ 0.8 µm) on request
• GST invoices — GSTIN: 24AKLPP6499B1ZT
• Fast dispatch from Ahmedabad — 3 to 7 working days standard configurations

PAN India Supply Coverage

Gujarat — Ahmedabad, Surat, Vadodara, Rajkot, Bharuch, Ankleshwar, Vapi, Dahej
Maharashtra — Mumbai, Pune, Navi Mumbai, Nashik, Aurangabad, Nagpur
Rajasthan — Jaipur, Jodhpur, Udaipur, Kota, Bhilwara
Delhi NCR — Delhi, Noida, Gurgaon, Faridabad, Ghaziabad
Tamil Nadu — Chennai, Coimbatore, Madurai, Tirupur, Salem
Karnataka — Bangalore, Hubli, Mysore, Belgaum, Mangalore
Telangana and Andhra Pradesh — Hyderabad, Vizag, Vijayawada, Kakinada
Madhya Pradesh — Indore, Bhopal, Jabalpur, Pithampur
Punjab and Haryana — Ludhiana, Amritsar, Chandigarh, Panipat
West Bengal — Kolkata, Durgapur, Asansol, Haldia

Export FOB Mundra / JNPT. IEC registered — IEC: AKLPP6499B.

Related Products from Krishna Industries

• Y Strainer Valve — pipeline protection installed upstream of sight glass in critical lines
• Globe Valve — throttling and isolation adjacent to sight glass monitoring points
• Flush Bottom Ball Valve — tank bottom drain adjacent to sight glass level monitoring
• Gate Valve — isolation on pipelines where sight glass inspection points are installed
• PTFE Muffler Butterfly Valve — isolation in powder and gas lines with sight glass monitoring

Frequently Asked Questions

1. What is a sight glass valve?

A sight glass valve is an inline valve fitting with a transparent glass window that allows visual inspection of fluid flow inside a pipeline without shutting down or opening the line. Operators can monitor flow presence, direction, colour, clarity, air bubbles, and contamination in real time. Unlike a sight glass indicator (no valve function), a sight glass valve can be isolated and the glass replaced while the pipeline remains in service.

2. What is the difference between borosilicate and toughened glass?

Borosilicate glass (BS 3463 / DIN 7080) handles temperatures up to 280°C, is chemically resistant to acids and alkalis, has excellent thermal shock resistance, and is FDA and GMP accepted for pharmaceutical and food contact. Toughened soda lime glass handles up to 150°C and is suitable for ambient temperature water and general utility lines only. Specify borosilicate for steam, chemical, pharmaceutical, food, and high temperature applications.

3. What is a reflex sight glass?

A reflex sight glass uses prismatic grooved glass that exploits total internal reflection — liquid appears black (absorbs light) and steam or vapour appears silvery white (reflects light). This makes it ideal for steam boiler drum level monitoring and steam trap inspection where the liquid-vapour interface must be clearly visible.

4. What sight glass valve for pharmaceutical GMP?

SS316L body (low carbon), borosilicate glass, tri-clamp end connections per ISO 2852, internal Ra ≤ 0.8 µm electropolished finish, EPDM or PTFE gasket — FDA 21 CFR compliant materials. Confirm your specific GMP or FDA requirement when ordering.

5. What is tri-clamp end connection?

Tri-clamp (TC) is a hygienic end connection standard widely used in pharmaceutical, food, and dairy industry piping — a clamp compresses a gasket between two matched ferrule ends for a leak-free, crevice-free joint that can be disassembled by hand for CIP (clean-in-place) and SIP (steam-in-place) cleaning without tools. Required for all GMP and food-grade pipeline connections.

6. Can sight glass valves handle steam service?

Yes — WCB body with borosilicate glass handles steam up to 280°C and Class 150 / 300 pressure. Specify reflex type for steam-water interface monitoring on boiler drums and steam traps. Never use toughened soda lime glass in steam service — thermal shock will cause glass failure.

7. What HSN code for sight glass valves?

HSN code 90269090 — instruments and apparatus for measuring or checking of flow, level, pressure or other variables of liquids or gases. Note this is different from standard valve HSN codes as sight glass valves are classified under instrumentation.

8. What sizes are available?

15mm (½”) to 300mm (12″). Most common sizes in Indian process plants are 25mm, 40mm, 50mm, and 80mm for chemical dosing and process monitoring lines.

9. What gasket material for chemical service?

PTFE gasket for most chemical service — chemically inert, temperature resistant. EPDM for water and mild chemical service. Graphite spiral wound gasket for high temperature steam and high pressure service.

10. What is the MOQ?

MOQ is 10 Nos. Mixed sizes and types in one order welcome.

11. Can I order sight glass valves with other valves in one order?

Yes — Krishna Industries supplies sight glass valves with gate valves, globe valves, Y strainers, and other piping components in single consolidated orders — one GST invoice, one dispatch.

12. What test certificates are provided?

MTC for SS body material, borosilicate glass compliance certificate per BS 3463 / DIN 7080, hydrostatic pressure test certificate. Surface finish certificate (Ra value) for pharma and food grade on request.

Conclusion

The Sight Glass Valve supplied by Krishna Industries (KELOR) is available across all types — inline full view, wye pattern, bull’s eye, reflex, and transparent — in Cast Iron, WCB, SS304, SS316, and SS316L body — borosilicate and toughened glass — flanged, threaded BSP/NPT, and tri-clamp ends — sizes 15mm to 300mm — PN10 to Class 300. Pharmaceutical GMP and food FDA grade SS316L tri-clamp units available. Sourced from verified Indian manufacturers with MTC, borosilicate glass certificates, surface finish records, and full GST documentation. Fast PAN India dispatch from Ahmedabad.

For chemical plant engineers, pharmaceutical procurement teams, food processing buyers, EPC project purchasers, and MRO teams — contact Krishna Industries (KELOR), your trusted Sight Glass Valve supplier in Ahmedabad, Gujarat, India. WhatsApp your type, body material, glass type, size, and quantity for bulk pricing within 2 hours.