Test and Drain Valve with Sight Glass valv Price in India – Complete Guide for Udhhyog
Sight Glass
A sight glass is a transparent tube or window that allows visual observation of fluid inside pipelines or tanks. It provides:
- Real-time monitoring of flow and fluid level
- Easy detection of contaminants or air bubbles
Test and Drain Valve
Test and drain valves, often combined with sight glasses, serve a more active role:
- They simulate sprinkler head activation for testing
- Allow controlled draining of the system
- Equipped with flow indicators or sight windows
✅ In fire safety systems, using both ensures code compliance and monitoring efficiency.
Why Sight Glass Integration Matters
Benefits of Integrated Sight Glass
- Visual verification of valve operation
- Ensures test water actually flows through
- Reduces the need for extra inspection ports
- Helpful in Udhhyog safety audits
Common Fluids Monitored
- Water (fire suppression)
- Glycol mixes (HVAC)
- Compressed air and nitrogen
- Light oils and solvents
Maintenance Tips for Longer Life
Preventive Measures
- Flush regularly to prevent residue build-up
- Check seals and gaskets monthly
- Use brass or stainless steel for corrosive setups
- Replace sight glass immediately if scratched or fogged
🛠️ A clean, intact sight glass ensures better system reliability and compliance with BIS/IS standards.
Industry Standards & Certifications
Required Compliance for Fire Use
- UL (Underwriters Laboratories)
- FM (Factory Mutual)
- IS 15105 (Bureau of Indian Standards for Valves)
For Industrial Pipelines
- ISO 9001: Quality Certification
- ANSI/ASME Valve Standards
- Indian Boiler Regulations (IBR) for steam setups
FAQs –
Q1.What is the price of a test and drain valve in Delhi?
Answer: Price ranges between ₹850 to ₹2,500 depending on brand, size, and material.
Q2. Is the sight glass replaceable?
Answer: Yes, most integrated sight glasses are replaceable if scratched or fogged.
Q3. What is the HSN code for test and drain valves?
Answer: HSN code 8481.80 – covers taps, valves, and similar industrial components.
Q4. Can it be used in chemical plants?
Answer: Yes, if selected with corrosion-resistant materials like SS316 or bronze.
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