Anti-scald controls are safety features found in various plumbing fixtures, primarily those involving hot water delivery, to prevent injuries caused by excessively hot water. They work by regulating the water temperature within a safe range, typically around 120°F (48.9°C), reducing the risk of scalding, especially for vulnerable individuals like children, older adults, and those with sensitive skin.

Applications:

• Bathroom showers: Most common application, utilizing various types of anti-scald controls.
• Bathtubs: Similar to showers, anti-scald controls help prevent overheating in bathwater.
• Sinks: Particularly relevant for kitchen and utility sinks where hot water is used for tasks like cleaning or food preparation.
• Lavatories: Can be helpful in public restrooms or facilities with high user turnover.
• Hydronic heating systems: Some systems incorporate anti-scald controls to regulate hot water flowing through radiators or radiant floor heating.

Types of Anti-Scald Controls:

• Pressure-balancing valves: Common in showers, these valves automatically adjust the hot and cold water mix to maintain a consistent temperature despite pressure fluctuations.
• Thermostatic valves: Offer precise temperature control by sensing water temperature and adjusting hot water flow to a pre-set limit.
• Mixing valves with a maximum temperature stop: These valves have a physical stop preventing users from exceeding a safe temperature limit.
• Anti-scald devices: Separate attachments installed on existing fixtures, often containing a temperature-sensitive element that shuts off water flow if it reaches a pre-set limit.

Benefits of Anti-Scald Controls:

• Prevent scalding: Significantly reduce the risk of burns, promoting safety and peace of mind.
• Improved accessibility: Make hot water access safer for vulnerable individuals.
• Potential water savings: Some controls promote water conservation by preventing excessive hot water use.
• Compliance with regulations: May be required by building codes or plumbing standards in certain regions.

Considerations:

• Type and application: Choose the appropriate control type based on the specific fixture and plumbing system.
• Maintenance: Some controls require periodic maintenance or cartridge replacements.
• Cost: Advanced controls like thermostatic valves may be more expensive than simpler options.
• Installation: May require professional installation depending on complexity.

Related terms: Shower safety, scald prevention, thermostatic valve, pressure-balancing valve, anti-scald device, accessible plumbing, universal design plumbing.