A contractor is installing a new shower in a residential home. What type of valve is required to limit the hot water temperature to prevent scalding, and what is the maximum temperature limit?

• A check valve limiting temperature to 140°F
• A tempering valve (ASSE 1070) limiting temperature to 130°F
• A pressure-balancing or thermostatic mixing valve (ASSE 1016) limiting temperature to 120°F
• A pressure-reducing valve (PRV) limiting temperature to 110°F