Safety Thermostatic Tempering Valves
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General Information The Limitations of Pressure Balanced Mixing Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Watts Makes it Safe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A Word about American Society of Sanitary Engineering (ASSE) Standards 1016, 1017, and 1070 . . . Design Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L avSafe™ — Thermostatic Tempering Faucets . . . . . . . . ....

The Dangers of Hot Water Every year, thousands of people in the US suffer serious thermal shock or scalding injuries in their bathtubs, sinks, and showers. Additional untold numbers become ill due to water-borne bacteria, such as Legionella. Problem: Thermal Shock Injuries in the shower are often caused by slips and falls in reaction to a sudden increase or decrease in water temperature. Ideally, if the supply of cold or hot water is lost, the water flow should shut down immediately. Termination of flow would eliminate the instinctive but dangerous reaction to move quickly away from an...

The Limitations of Pressure Balanced Mixing Valves Many shower and combination tub/shower mixing valves in today’s homes use a pressure balanced design. Unfortunately, pressure balanced valves do not automatically control outlet temperatures, nor do they automatically limit outlet temperatures should the supply temperatures dramatically increase or decrease. Such limitations are potentially dangerous. In addition, pressure balanced valves require the installer to set the limit stop in order to prevent users from adjusting the valve beyond a safe operating temperature. What's more, changes...

Once tempered water is in use, a thermostat in the mixing chamber of the valve senses the outlet temperature. The thermostat automatically positions a seat assembly which controls the flow of hot and cold water supplied to the mixing chamber. If the mixed outlet temperature increases, the thermostat will expand, moving the seat assembly to allow the cold water inlet port to open more fully and at the same time restricting the hot water inlet port. Conversely, if the mixed outlet temperature decreases, the thermostat will contract, moving the seat assembly to allow the hot water inlet port...

ASSE Standards A Comparison of ASSE 1069, 1070 and 1071 with revised 1016 and 1017 standards. Automatic Compensating valves for individual showers and tub-shower combinations Temperature Activated Mixing Valves for hot water distribution systems Temperature Actuated, Flow Reduction valves for individual fixture fittings (TAFR) Point-of use, bather or bather attendant interface Tempered water distribution In-line high temperature limit devices Shower or tub/shower combination only Faucets, shower heads, tub spouts dramatically reduce flow when temperature exceeds actuation point Type P -...

Automatic Temperature Control Mixing Valves Water Temperature Limiting Devices Temperature Activated Mixing valves for plumbed emergency equipment Point-of-use distribution Adjustment by installer Gang showers, sitz baths, spas, gang lavatories Sinks, lavatories, baths Eye washers, eye/face washes, drench showers and combination units Thermostatic only Thermostatic only Thermostatic only + 5˚F lasting more than 1.5 seconds within first 5 seconds - 9˚F lasting more than 1 second within first five seconds Varies depending on capacity. Also, hot water control has a tighter tolerance than cold...

Design Considerations Heat Traps •  ll mixing valves used at the source of supply should be trapped. Trapping the A valve helps reduce mineral deposits and premature component wear. •  eat traps help reduce convection loss also known as thermosiphoning, increasH ing system efficiency. Stop Valves •  ll mixing valves should be installed with a means to isolate the valve for service A and repair. Check Valves •  heck valves assure flow of water in one direction. They prevent thermal siphonC ing of hot water to the cold water supply. •  The addition of check valves should be considered...

Delivery of water to fixtures intended for use in bathing or washing should always be controlled by valves listed to ASSE Standard 1016 or ASSE Standard 1070 such as Watts Series LFMMV, LFL111 and LFUSG-B tempering valves. ASSE 1016 listed valves provide the user with both scald protection and thermal shock protection. ASSE 1070 listed valves provide the user with scald protection only. These valves should never be set to exceed a maximum temperature of 120°F (49°C). (Watts recommends the maximum temperature of 110°F (43°C) for shower and bathing fixtures.) Supply Systems The control of...

Series 1070 and P1070 LavSafe™ Thermostatic Faucets Sizes: / " (10mm) inlet 3 8 LEAD FREE* Series 1070 and P1070 thermostatic faucets feature an advanced thermal actuator to provide the latest in thermal protection. The single-lever cartridge, with integral ceramic discs, provides both temperature and volume control. LavSafe™ automatically mixes hot and cold water to deliver pre-set water within a specific range. In the event of cold water failure, the thermal actuator virtually shuts off the flow of hot water. LavSafe™ is listed to ASSE 1070, IAPMO cUPC, and NSF 61 Section 9 Annex G....

**Less aerator & outlet temperature 105°F (41°C) DIMENSIONS Thermostatic Faucet 1070 2.0 gpm Aerator 1070VA 2.0 gpm Vandal Resistant Aerator 1070-6 2.0 gpm Aerator, 6" Lever Handle 1070A5 0.5 gpm Outlet 1070V5 0.5 gpm Vandal Resistant Outlet 1070A15 1.5 gpm Aerator+ 1070L 2.0 gpm Laminar Flow Outlet 1070VL 2.0 gpm Laminar Flow Vandal Resistant Outlet 1070L5 0.5 gpm Laminar Flow Outlet 1070VL5 0.5 gpm Laminar Flow Vandal Resistant Outlet 1070PW 2.0 gpm Aerator, Pop-Up Waste P1070 2.0 gpm Aerator, Deck Plate P1070VA 2.0 VR Aerator, Deck Plate P1070-6 2.0 gpm Aerator, 6" Lever Handle, Deck...