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SKU: 93207128
Grundfos NB 100-315/334 Cast Iron 30 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Central heating circulation skids and building hydronic lines feature the Grundfos NB 100-315/334 end-suction pump. Coupled to a 30 kW motor drive, fluid enters through an axial DN 125 suction port and exits through a radial DN 100 discharge flange.
Hydraulic flow parameter attains approx. 4184 L/Min operational circulation and overcomes approx. 40.3 m maximum head. Constructed with an EN-GJL-250 cast iron volute protected by cataphoretic electrocoating, internal hydraulics feature a stainless steel impeller and BQQE mechanical shaft seal. Net weight is 374 kg.
Electrical supply across 415 V three-phase powers the drive with an operating current of 57.9 Amps for 30 kW. Working tolerances accommodate fluid temperatures spanning -25°C to 120°C at pressures reaching 16 bar. Flanged connections feature DN 125 inlet and DN 100 outlet dimensions.
Environmental frame architecture meets IP55 protection criteria with Class F motor insulation. Because built-in thermal protection is not included, external motor overload protection must be supplied. Maintenance is streamlined via a back-pull-out arrangement allowing rotating element removal while the casing remains connected to piping.
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 | 4184 L/Min |
| Max Head | 40.3 m |
| Power | 30 kW / 415v |
| Rated Current | 57.9 Amps |
| Suitable For | Commercial Chilled Water Circulation |
| Body Material | Cast Iron |
| Liquid Temperature | -25°C to 120°C |
| Inlet Size | 125 mm |
| Outlet Size | 100 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 does this pump enable straightforward servicing without piping removal?
Plant servicing on the Grundfos NB 100-315/334 avoids pipe dismantling by using a back-pull-out layout for drive and impeller extraction.
How are the pump volute and internal components built for long life?
The NB 100-315/334 incorporates an electrocoated EN-GJL-250 cast iron casing and a stainless steel impeller for dependable operation.
What peak liquid capacity and vertical head does this pump offer?
Operating capacity on the NB-100-315-334 reaches approx. 4184 L/Min in liquid flow and approx. 40.3 m in dynamic head across duty cycles.
What electrical input rating and running current drive this motor?
The NB 100 315 334 is driven by a 30 kW motor running on a 415 V three-phase supply, drawing approximately 57.9 Amps with IP55 protection.
Can this pump operate in hot hydronic lines under standard pressures?
The NB/100/315/334 safely accommodates pumped fluid temperatures from -25°C to 120°C under working pressure limits up to 16 bar.
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