EyewashMixing Valverequirements

ThermostaticMixing valvefor eyewash station

Pressure and Temperature Relief (P & T Relief) Valves are safety controls which ensure that the temperature of the water in a pressurised unvented water heater cannot exceed 99° C in the event that the normal thermostatic controls fail.

Thermostaticmixing valve

These valves may be used to guard against over-temperature and over-pressure hazards wherever water is stored in unvented containers. This is a requirement of Australian Standard AS 3500-4.

Innovative push-to-connect design makes for quick and easy installation. Mixes hot water with cold to deliver tempered water at a controlled and safe temperature of 120°F (49°C). Protects from scalding and when installed at the water heater, provides more available hot water and helps prevent Legionella. Ideal for working in tight spaces. Faster install time and ease of use reduces installation errors.

The relief valve will open when the pressure exceeds a pre set valve. If the valve is opening when it is not expected to it may have failed and need to be replaced.  Always check the water system  pressure before replacing the valve.