What is the difference between freeze-resistant and freeze-protected eye wash and shower equipment?
Designed to withstand subfreezing conditions for brief periods, freezeresistant systems remove any portion of the system containing water from direct exposure to the elements. Valves and piping that contain water are either located in a heated building or underground below the frost line. The eye wash heads, shower head and additional piping are placed outside, exposed to water only when the system is activated. Special freeze-prevention valves may also be incorporated into the design. When these valves sense temperatures approaching 40F, they partially activate flow. They fully activate around 35F to move water in the system and prevent freezing. When freeze-resistant systems are shut down after being activated, water will remain in the system where it can freeze and eventually cause damage. Freeze-prevention valves require a continuous water flow to prevent freezing. This wastes water and can be a slip hazard depending on the drain system in place. Because of these conditions, freeze
Related Questions
- I have a drench shower and would like to attach a single head drench hose, can the drench hose also be used as an eye/face wash?
- Is there a recommended temperature range for the flushing solution from emergency eye wash or shower equipment?
- What is the difference between freeze-resistant and freeze-protected eye wash and shower equipment?
