1. Circulation Pump contains two parts:body and motor (with wet rotor).Body contains impeller,while motor includes stator,rotor,shield cover and deflating screw. 2.Tightness:the Circulating pump does not use mechanical seal.Stator and rotor are sealed with shield cover made of stainless and two heat-resistant rubber rings,which makes no leakage. 3.Lubrication of bearings and cooling of motor by inner circulation of pumped liquid. 4.Insulation class H,motor fixed with thermal protector,one speed or three speeds.

GPA II series circulation motor pump is manily used in domestic heating and hot water system. The product is most applicable to the following systems. ·Commercial hot water recirculation ·Domestic hot water recirculation ·Domestic heating ·Industrial heating ·Solar system ·Air conditioning system Electronically controlled circulator pumps for domestic building and thermal solar systems. Shinhoo GPA II pumps are high-efficiency circulators, designed for heating and thermal solar systems. The ideal choice for basic functionality needs. Applicable as a universal upgrade and replacement pump. The pump features three constant-curve modes, proportional pressure curves, constant pressure curves, Auto and night mode. The speed can also be controlled by a low-voltage PWM signal from a controller to optimize the system performance.