Description
This hot water recirculating pump is designed for water circulation in closed-loop heating systems. It can be used in residential and light commercial applications, including hydronic radiant heating, boiler systems, solar water heating, domestic hot water circulation, and other water-based heating systems.
The pump is equipped with a three-speed manual control system, allowing adjustment of operating power based on system requirements. It provides three power levels: 55W, 90W, and 130W, with a maximum flow rate of 13 GPM.
Wet Rotor Structure：The pump adopts a wet rotor design, where the pumped water is used for internal lubrication during operation. This structure does not require mechanical seals or couplings, reducing maintenance requirements under normal operating conditions.
The pump provides three selectable operating modes to match different system resistance requirements. Proper selection of speed should be based on system design and piping conditions.
Regular system air removal may help maintain stable circulation performance.
|
Brand Name |
WiseWater |
Model Number |
25PBG-7_Green_3/4” |
|
Maximum Lifting Height |
24 Feet |
Voltage |
110 Volts |
|
Color |
Green |
Item Dimensions L x W x H |
5.2"Lx5.94"Wx4.9"H |
|
Material Type |
Cast Iron |
Item Type Name |
Pump |
Three-Speed Manual Control
The pump uses a built-in mechanical selector switch for speed adjustment.
- Speed I: 55W
- Speed II: 90W
- Speed III: 130W (maximum output)
The operating head range is approximately 9.8 ft / 18 ft / 24 ft, depending on the selected speed.
Installation Design
The pump is supplied with installation accessories for standard piping systems.
Included in the package:
- 3/4" FNPT flanges
- Gaskets
- Bolts and nuts
The standard threaded connection allows installation into compatible hydronic piping systems using basic tools.
The power cord is approximately 3.46 ft and comes with a standard US plug.
Materials and Construction
The pump body is made of cast iron and coated for corrosion resistance in closed-loop water systems.
The impeller is made of PES material, designed for stable operation under hot water conditions.
The bearing uses ceramic material, which provides corrosion resistance and temperature stability for continuous circulation applications.
The motor uses copper winding and is designed for 110V power supply systems.
Operating limits:
- Maximum pressure: 145 psi (10 bar)
- Maximum temperature: 230°F (110°C)
Application Range
This circulation pump is suitable for water circulation in the following systems:
- Hydronic radiant floor heating
- Boiler circulation systems
- Solar water heating systems
- Domestic hot water recirculation
- Sidearm heat exchangers
- Heating manifolds
- Snow melting systems
- Swimming pool heating loops
- Closed-loop plumbing circulation systems
It is designed for clean water circulation in compatible heating applications.