Model TWBS.SHE (patent pending) is a thermostatic mixing valve that mixes hot and cold water to supply tempered water to emergency eyewash fixtures requiring flow up to 74 gpm (280 L). Unit employs a paraffin filled thermostatic mixing element and a secondary high temperature limit valve to provide additional protection. Lowest internal pressure drop where supply pressure is low, and a high Cold Water Bypass flow rate of 50 gpm (189 L). The modular lead-free brass design with a one piece casting uses internal check stops, over-sized valve seats, a shuttle design that eliminates valve sticking, and a funnel design to improve temperature control with better mixing at low flow rates. Lime and calcium resistant components are used throughout. The outlet temperature factory setting is 85® F (26® C). Maximum operating pressure: 125 psi (8.62 Bar). Temperature adjustment range 60 - 90® F (16 - 35® C). Maximum inlet temperature: 180® F (82® C). Recommended inlet temperature: 140® F (60® C). Minimum inlet temperature: 120® F (49® C) Inlet 1-1/4" NPT(F). Outlet 1-1/4" NPT(F).