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SKU: 93209354
Grundfos NB 65-315/314 Cast Iron 11 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Central plant circulation manifolds and heat transfer stations integrate the Grundfos NB 65-315/314 end-suction pump. The unit couples a 11 kW drive motor to an axial DN 80 inlet nozzle and a radial DN 65 discharge connection.
Hydraulic fluid rating attains 1450 L/Min volumetric delivery against a 30.83 m maximum head. Volute casing construction features EN-GJL-250 cast iron with cataphoretic electrocoating, paired with a stainless steel impeller and BQQE shaft seal. Product net weight equals 214 kg.
Three-phase electrical input at 415 V operates the 11 kW drive at a current draw of 22.3 Amps. Operating limits support liquid temperatures from -25°C to 120°C and maximum system pressures of 16 bar. Flanged pipework attaches via DN 80 inlet and DN 65 outlet ports.
Enclosure sealing integrity meets IP55 protection requirements with Class F thermal insulation. Standard motor installation requires external electrical overload protection. The back-pull-out design allows complete drive and rotating assembly extraction while leaving the casing secured to distribution pipework.
Features
- EN1092-2 flanged connections conform to standard PN16 pipework dimensions.
- Continuous duty S1 rated electric drive motor operates in ambient temperatures up to 40°C.
- Back-pull-out layout permits motor and impeller servicing without breaking pipe connections.
- Integral casing support feet provide direct anchoring to plant room inertia bases and plinths.
- Precision balanced rotating components reduce hydraulic noise and mechanical shaft deflection.
- Renewable casing wear rings retain pump efficiency and avoid direct volute casing wear.
- Solid shaft assembly with sealed ball bearings absorbs operational hydraulic and radial forces.
SPECIFICATIONS
| Max Flow | 1450 L/Min |
| Max Head | 30 m |
| Power | 11 kW / 415v |
| Rated Current | 22.3 Amps |
| Suitable For | District Heating & Cooling Networks |
| Body Material | Cast Iron |
| Liquid Temperature | -25°C to 120°C |
| Inlet Size | 80 mm |
| Outlet Size | 65 mm |
| Warranty | 24 Months |
Warranty & Returns
All products supplied by Foundation Pumps are covered by a minimum 12-month warranty unless otherwise stated. Some brands may offer longer manufacturer warranties. Warranty covers manufacturing defects, faulty materials and workmanship under normal use.
- Products must be installed correctly and in accordance with the manufacturer’s instructions.
- Warranty does not cover incorrect installation, misuse, dry running, normal wear and tear, unauthorised repairs or damage caused by external factors.
- Proof of purchase, photos, videos and installation details may be requested when assessing a warranty claim.
- The customer is responsible for returning the product to Foundation Pumps or the nominated service centre unless otherwise agreed.
- Removal, reinstallation, labour and associated site costs are generally the customer’s responsibility unless required under Australian Consumer Law.
- Change-of-mind returns may be accepted within 30 days provided the product is unused, uninstalled and returned in its original packaging.
- Customers are responsible for return freight costs for change-of-mind returns.
- Restocking fees may apply to special-order, bulky or non-stocked products.
- Used, installed or specially ordered products may not be eligible for change-of-mind returns.
- If a product arrives damaged or faulty, please contact Foundation Pumps as soon as possible so we can assist with the appropriate repair, replacement or refund.
Your rights under Australian Consumer Law are not affected.
How is mechanical maintenance simplified by the back-pull-out casing layout?
Mechanical servicing on the Grundfos NB 65-315/314 requires no pipe dismantling, utilizing back-pull-out design to extract the drive assembly.
Can this pump tolerate hot heating water and high working pressures?
Thermal boundaries on the NB 65-315/314 support media temperatures from -25°C to 120°C alongside maximum line pressures up to 16 bar.
What liquid capacity and discharge elevation does this pump supply?
Operating capacity on the NB-65-315-314 reaches up to 1450 L/Min in liquid flow and 30.83 m in dynamic head across duty cycles.
Which materials comprise the pump housing, internal runner, and seal?
The NB 65 315 314 features an electrocoated EN-GJL-250 cast iron volute and a precision stainless steel impeller for lasting durability.
Which shaft sealing design and internal wear components provide dependable fluid containment along the shaft?
The NB/65/315/314 utilizes a robust BQQE mechanical shaft seal and replaceable wear rings to prevent fluid loss and preserve internal clearances.
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