What are the standard connection sizes for these float valves?

The standard specifies nominal inlet sizes of 15 mm and 20 mm, with an optional 25 mm size (Clause 5).

What is the maximum water pressure this valve is designed for?

The maximum recommended working pressure is 1.0 MPa (approximately 10 bar or 145 psi) as per Clause 6.2.

Can I use this float valve in a geyser or hot water tank?

No, this standard is explicitly for cold water services with a maximum water temperature of 45°C (Clause 1.1).

How is the durability of the valve tested?

The valve undergoes an endurance test of 50,000 open/close cycles to ensure its mechanical longevity (Clause 7.5).

IS 12234

: 1988

plastic equilibrium float valve for cold water services

CurrentSpecializedSpecificationBIMMEP · Sanitary Appliances and Water Fittings

Download PDF BIS Portal Google

This standard specifies the requirements for materials, dimensions, construction, and performance of plastic equilibrium float valves intended for use with cold water services in water storage cisterns. It details testing procedures for aspects like leakage, flow rate, and endurance to ensure reliability and also outlines the marking requirements for product identification and certification.

plastic equilibrium float valve for cold water services

Quick Reference Values

Nominal Sizes15 mm, 20 mm, 25 mm

Maximum Working Pressure1.0 MPa

Maximum Cold Water Temperature45°C

Hydrostatic Test Pressure1.6 MPa for 2.5 min

Endurance Test50,000 cycles

Practical Notes

These valves are designed for cold water (up to 45°C) only; using them in hot water systems will cause material degradation and failure.

Ensure the float arm and float have unrestricted movement inside the tank, as obstruction is a common cause of malfunction (overflow or failure to fill).

The 'equilibrium' design provides a gradual shut-off, which helps in reducing water hammer in the plumbing lines compared to older snap-action valves.