Features: High temperature - With heat-resistant fan, can be used for 100 degrees hot water low noise - Unique centrifugal impeller to reduce friction noise - With flow switch, no on / off noise Internal special treatment, not easy to rust - The interior surface is electrosprayed - Impeller, flow valve parts using high-strength castings No congestion - Thoroughly solve the clogging problem of vortex pump impurities In the same level of the most energy-saving pump Delicate and exquisite design Cooling quickly, the motor temperature is low Motor uses a closed design, long life use: solar water heaters Booster use Solve the use of low-pressure high-rise buildings Features: High temperature - With heat-resistant fan, can be used for 100 degrees hot water low noise - Unique centrifugal impeller to reduce friction noise - With flow switch, no on / off noise Internal special treatment, not easy to rust - The interior surface is electrosprayed - Impeller, flow valve parts using high-strength castings No congestion - Thoroughly solve the clogging problem of vortex pump impurities In the same level of the most energy-saving pump Delicate and exquisite design Cooling quickly, the motor temperature is low Motor uses a closed design, long life use: solar water heaters Booster use Solve the use of low-pressure high-rise buildings