Understanding IS 5290 Specifications: A Procurement Guide for Industrial Fire Hydrant Valves in India

Engineering Technical Cell, Tulsi Fires•2024-03-15•6 min read

### Introduction to IS 5290 Landing Valves

In India, fire safety installations in high-rise buildings, petrochemical plants, and industrial complexes are strictly governed by the Bureau of Indian Standards (BIS) and the National Building Code (NBC). Among the most vital components of any wet riser or internal hydrant system is the **Landing Valve**, codified under **IS 5290:1993**.

A landing valve acts as the controlled discharge port through which firefighters access high-pressure water pumped from subterranean fire water reservoirs. Selecting non-compliant or sub-standard landing valves carries severe risks of catastrophic burst failure, seat leakages, or seized spindles during emergencies.

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Key Requirements of IS 5290:1993 Type A

1. **Material of Construction (MOC)** - **Gunmetal / Bronze (IS 318 Grade LTB2):** Recommended for general industrial, commercial, and coastal environments due to outstanding corrosion resistance. - **Stainless Steel (IS 3444 Grade CF8 or CF8M):** Crucial for chemical plants, offshore oil rigs, and fertilizer units exposed to acid fumes or seawater. - **Cast Iron is strictly prohibited** for pressure-retaining landing valve bodies under BIS safety norms.

2. **Hydrostatic Test Parameters** - **Body Test Pressure:** 21 kgf/cm² (2.1 MPa / 300 PSI) held for a minimum of 2.5 minutes without sweating or structural deformation. - **Seat Leakage Test:** 14 kgf/cm² (1.4 MPa / 200 PSI) with zero drip or pressure loss across the closed valve face.

3. **Discharge Performance** - Under IS 5290 test criteria, a 63 mm landing valve must deliver **at least 900 Liters Per Minute (LPM)** at an inlet pressure of 7 kgf/cm².

4. **Connection Standards** - **Inlet:** 75 mm (3-inch) or 80 mm NB Flanged connection conforming to IS 1538 Table D/E or ANSI B16.5 Class 150. - **Outlet:** Standard 63 mm female instantaneous connection conforming to IS 903 with spring-loaded locking cam latches.

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Procurement Checklist for MEP Consultants

When evaluating vendor tenders for IS 5290 landing valves: - Ensure the **BIS CM/L (Certification Mark License)** number is cast or engraved directly on the valve body. - Verify that the valve includes an integrated **blank cap** attached by a heavy brass chain to prevent foreign ingress. - Request material test certificates verifying leaded tin bronze (LTB2) metallurgical composition. - Inspect the gland packing — Neha Tech Industries / Tulsi Fires utilizes precision graphite-impregnated PTFE packing with phosphor bronze gland bushes for frictionless operation even after months of dormancy.

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