MasterGuard 660, 1-1/2" Thermostatic Mixing Valve, High Capacity (Lead Free)

The MasterGuard 600 Series features a range of high flow rate valves that mix hot water with cold water to deliver water at a safe, controlled temperature, typically 120°F (49°C). It features state of art, fast-acting, high-quality thermostatic mixing valve elements that sense the outlet temperature and react to maintain a stable delivery temperature even under varying and extremely low flows. The adjusting handle can be locked at the desired temperature.

The MasterGuard is shipped complete as a kit with service fittings (integral shut-off valve and gauge port) on each inlet. The check valve and strainer assembly are housed in the body of the valve for easy serviceability. The valves comes with a temperature gauge that can be mounted either on the mixed outlet or the two inlets. The service fittings have a female inlet thread that secure to the base through union connections. The mix water outlet is female NPT. The MasterGuard series is available in sizes from ¾” to 2”.

Features:

• Accurate temperature control, even at very low flows
• Faster to commission, greater user comfort and safety
• Fast reaction to changes in flow rate or supply temperature
• Constant outlet temperature for greater comfort
• Robust, low complexity construction
• Superior reliability, improved user safety
• Listed by IAPMO, CSA, and ASSE
• Inspector friendly for peace of mind
• Temperature Adjustment Knob can be locked at a desired temperature
• Quality Assurance: Every valve is tested for performance

Specifications:

• Outlet Temperature Range: 85 – 150°F (29.4 – 66°C)
• Factory Set Temp. Range: 116.5°F ± 3.5°F (47°C ± 2°C)
• Hot Temp. Supply Range: 120 – 180°F (48.9 – 82.2°C)
• Cold Temp. Supply Range: 39 – 80°F (3.9 – 26.7°C)
• Maximum Pressure: 125 psi (862 kPa)
• Min. Temp Differential: 25°F (47°C)
• Body: Lead-Free Brass
• Seals: EPDM
• Springs: Stainless Steel
• Internal: Cap Brass
• Piston PTFE: Coated Stainless Steel
• Inlet (NPT) x Outlet (NPT): 1-1/2” x 1-1/2”