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These series are WRS pumps. The WRS pump is an air venting pump. It is equipped with an air vent housing, suitable for using in conjunction with any commercially available automatic air vent, vertical mounting of the air vent at any pump position. Motor overload protection is not required. The motor operates non一overloading.
These pumps are suitable for heating water to VDI 2035 and water/glycol mixtures up to a ration of 1:1.They are extremely reliable, economical and quiet to use, being particulary suitable for domestic applications such as central heating installations, industrial circulating systems, air conditioning and chilled water circulation systems, etc.
Fluid temperature rang：-10℃~+110℃.
Maximum ambient temperature：40℃
Manual 3-speed control
Non-overloading motor-No external overload control required always refer to name plate data!
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