KEY FEATURES

• High quality end-suction centrifugal pump
  
• Pump has an axial suction port, radial discharge port and horizontal shaft
• Pump is close-coupled to a fan-cooled asynchronous motor

The Grundfos NB 40-125 Single-Stage End-Suction Centrifugal Pump is designed according to ISO 5199 with dimensions and rated performance according to EN 733 (10 bar). Flanges are PN 16 with dimensions according to EN 1092-2. The pump has an axial suction port, radial discharge port, horizontal shaft and a back pull-out design enabling removal of the motor, motor stool, cover and impeller without disturbing the pump housing or pipework. The pump is close-coupled to a fan-cooled asynchronous motor.

Pump Details

The pump housing has both a priming and a drain hole closed by plugs. The impeller is a closed impeller with double-curved blades with smooth surfaces. The impeller is statically balanced according to ISO 1940-1 class G6.3 and hydraulically balanced to compensate for axial thrust.

Wear rings used in pump housing and for impeller are made of bronze/brass or cast iron. Motor stool and pump cover are made of cast iron (EN-GJL-250). Coupling guards are fitted to the motor stool. The pump cover is provided with a manual air vent screw for venting of the pump housing and the shaft seal chamber.

The pump is fitted with an unbalanced rubber bellows seal with torque transmission across the spring and around the bellows. Due to the bellows, the seal does not wear the shaft, and the axial movement is not prevented by deposits on the shaft.

Primary seal:

• Rotating seal ring material: silicon carbide (SiC)
  
• Stationary seat material: silicon carbide (SiC)
  

This material pairing is used where higher corrosion resistance is required. The high hardness of this material pairing offers good resistance against abrasive particles.

Secondary seal material:

• EPDM (ethylene-propylene rubber) EPDM has excellent resistance to hot water. EPDM is not suitable for mineral oils.

The pump housing has feet.

Motor Details

The motor is a totally enclosed, fan-cooled motor with principal dimensions to IEC and DIN standards. Electrical tolerances comply with IEC 60034. The motor efficiency is classified as IE3 in accordance with IEC 60034-30-1. 

ADDITIONAL FEATURES

• Stainless steel shaft with bronze impeller
• Non-self priming
  

APPLICATIONS

• Water transfer in water treatment related applications 

PRODUCT PACKAGE INCLUDES

• Grundfos NB 40-125 Single-Stage End-Suction Centrifugal Pump
• External wiring not included

SPECIFICATIONS

The contents of this document are provided as a guide only and are subject to change without prior notice, and without any subsequent liability to Parkway Process Solutions Pty Ltd (the “Company”) or any of its related entities. The actual shape, colour, size, performance and/or any other parameters of the item/s and/or product/s and/or system/s supplied by the Company, may vary materially from those outlined by the Company.

All brand names and product names outlined in this document are either trademarks or registered trademarks and belong to the respective companies.

ALL INFORMATION OUTLINED HEREIN IS PROVIDED AS A GUIDE ONLY AND SHOULD NOT BE RELIED UPON FOR ANY PURPOSE, WITHOUT CONFIRMING SUCH DETAILS WITH THE COMPANY BEFORE MAKING A PURCHASE AND/OR UTILISING A GIVEN PRODUCT.

ADDITIONAL RESOURCES

PRODUCT BROCHURE

General information about the Grundfos NB 40-125 Single-Stage End-Suction Centrifugal Pump is outlined in the Grundfos Single-Stage End-Suction Pumps brochure.

DOWNLOAD

PRODUCT INFORMATION SHEET (PIS)

Detailed information about the Grundfos NB 40-125 Single-Stage End-Suction Centrifugal Pump is outlined in the Grundfos Grundfos NB 40-125 Single-Stage End-Suction Centrifugal Pump product information sheet.

DOWNLOAD

USER MANUAL

Additional information about operating the Grundfos NB 40-125 Single-Stage End-Suction Centrifugal Pump range is outlined in the Grundfos NB Single-Stage End-Suction Centrifugal Pump, instruction manual.

DOWNLOAD