1. Power Source: Voltage - 230V, frequency - 60Hz.
2. Maximum pressure of the system: No more than 1.0MPa..
3. Transmission Fluid: Lean, clean, non-corrosive and non-explosive liquids, and without any solid particles, fibers or mineral oil, Pump absolutely must not be used to transport flammable liquids such as diesel and petrol.
4. The pumps should work under air temperature of environment rang of 0°C~40°C, water temperature rang of 2°C ~110°C ,except the automatic pump.
5. To avoid NHP damage to the pump bearing, pump should be maintained according to the following minimum pressure standards:

        For pumps with power below 250W, the inlet minimum water pressure should be maintained as following:

      GPS series pump types and specifications:

 

1.Structure: The product is made up of a pump and a single-phase shield motor. The pump is made up of impeller. The body of the pump and motor consists of stator, rotor, shield cover and deflating bolt.Motor consists of stator ,rator .shield cover, deflating bolt and so on.
2.Seal:The pump isn't sealed with machinery sealing. The stator and rotor of motor are sealed with stainless steal cover. Other parts are all sealed with heat-resisting rubber facing ring. so that there is no leakage.Other parts are all sealed with heat-resisting rubber facing ring. so thaat there/s no leakage.
3.Lubricate: The water between the stator and the rotor can lubricate and cool the motor as the lubricant and coolant.lubricate and cool the motor as the lubricant and coolant.

 

The users can choose the different type according to the flow, head in the performance curve.
The inlet and outlet of GPS series including the screw connection and the flange connection. The inlet and outlet of GPS series adopts flange connection. lf the dimension of the inlet and outlet or the shape you need is different from what shows in the catalog. We can design a pump for you specially. Usually, the pump body material of the GPS circulating pump adopts cast iron but we can adopt the brass as well.
When the transport medium is clean water which is in the normal temperature, we suggest you to use cast iron. When it is used in the heating pipeline system which is underground. We suggest that the brass or bronze be adopted as the pump body. When it is used in cycle of life hot water. You can use stainless steel,brass or bronze.