1. Applications of Deep well Submersible Borehole Water Pumps:
1> For water supply from wells or reservoirs.
2> For domestic use,for civil and industrial applications.
3> For garden use and irrigation. 

2. Operating conditions of Deep well Submersible Borehole Water Pumps:
1> Maximum fluid temperature up to +35°C.
2> Maximum sand content: 0.3%.
3> Maximum immersion: 100m.    
4> Minimum well diameter: 4".    

3. Specification of Motor for Deep well Submersible Borehole Water Pumps:
Three-phase:380-415V/50HZ    
Single-phase:220-240V/50HZ     
Equip with special start-up control box.
Internal diameter of outlet； 1.25".1.5".2"
Special features available:
1> Other voltages are acceptable.
2> Frequency 60Hz.
3> Other mechanical seal.
4> Equip with Auto-control box.

4. Description of Deep well Submersible Borehole Water Pumps:

Warranty: 1 years.
(according to our general sales conditions)  

Components:                                                         Material:

Pump external casing                                          AISI 304 ss

Delivery casing                                                    Cast-Cu ASTM280

Suction lantern                                                    Cast-Cu ASTM280

Diffuser                                                                Plastic.PC

Impeller                                                                Plastic.POM

Motor external casing                                            AISI 304ss

Top cover                                                         1.Cast-Cu ASTM280. 2.Cast iron G20 UNI5007

Bottom support                                                     AISI 304 ss

Mechanical seal                                                    Special seal for deep well(carbon-SIC/TC)

Bearing                                                                 NSK(Japan)

5. FAQ

1>.  Can I get trained on CNBM products?

Yes, we provide training courses in our factory (products, general and specific pump technology, hydraulics, and practical applications). Please consult your sales manager or get in touch with our headquarters for more information.

2>.  Are your pumps cheaper than those of your competitors?

CNBM aims to give its customers the highest standards of quality and service and delivery times, all at a reasonable price.

3>.  How long is your warranty?

Unless otherwise expressly authorized in writing, by specifying a longer period or different conditions, CNBM states that, for a period of twelve (12) months from delivery date, all Products supplied are free from defects in materials and workmanship, and conform to the applicable specifications. Either the delivery documentation or the invoice must be provided to prove delivery date. In absence of such documents, the production date appearing on the product label may suffice.

4> Can your pumps mount Eff.1 motors

Currently, only on request though this will shortly be a CNBM standard.

5> Are your pumps protected against dry running?

No, unprotected centrifugal pumps are not generally designed for dry running. It is important to give us or your dealer as much information as possible about the system in which the pump is used. Inlet pressure, the type of liquid to be pumped, together with relative density, viscosity and temperature, for example, are required in order to allow CNBM to recommend the right pump with the right gaskets for a long operating lifetime.

6> How can I get trained on CNBM products?

Yes, we provide training courses in our factory (products, general and specific pump technology, hydraulics, and practical applications). Please consult your sales manager or get in touch with our headquarters for more information.