GPD
Single-phase pipeline screened electric pump
The feature and use of circulating pump:
GPD series of circulating pump researched and developed by scientific research personnel of our company has following merits: no leakage, low noise, environmental protection, beautiful appearance, convenient installation, run responsible and so on, lt is desig ned special for heating system and it can be used to supply water and add pressure for mansions of cityk, villa of suburb, house, to match with industrial equipment, to supply water in cycle for cooling air-condition, boiler and solar energy, supply hot water and keep warm in cycle, etc.
Running Conditions
1.Power Source:Voltage 110~230V,frequency 50~60Hz.
2.The greatest pressure of the system:No more than 1.0MPa..
3.To avoid NHP damage to the pump bearing,pumpa shoudl be maintained the minimum pressure below:
For pumps with power below 250W,the inlet minimum water pressure should be maintainted as following:
For pumps with power above 250W,the inlet minimum water pressure is different with each model,see following details:
4.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.
5.The pumps should work under air temperature of environment rang of 0℃~40℃,water temperature rang of 2℃~110℃,except the automatic pump(GPD-A Model).
Character of sturcture:
1.Structure: The product is made up of pump and single-phase shield motor. The pump is made up of impeller. body of pump, etc 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 thaat there/s no leakage.
3.Lubricate and cool: lnside circulation way is adopted in the product. The water between the stator and the rotor can lubricate and cool the motor as the lubricant and coolant.
4.Motol is class H insulation and equipped with thermal protection.
The choice of the product:
The users can choose the different type according to the flow, head in the performance curve.
1. The inlet and outlet of GPD-S series including the screw connection and the flange connection. You can
2.choose by yourself. The inlet and outlet of GPD 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 for you specially. Usually, the pump body
material of the GPD circulating pump adopts cast iron but we can adopt the brass.
3.bronze or stainless steel according to the customer's requirement . When the transport medium is clean water which is in the normal temperature, suggest you use cast iron. When it is used in the heating pipeline system which is under ground . 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 GPD-N which pump body mater ial is stainless steel. or GPD-B which pump body material is brass or bronze.
Attention:
Pump installation must ensure the motor shaft in horizontal.
Structural Diagram: