Nuclear 
Desalination 
Design Features of Hayward Tyler End Suction Pump Model
The N3 is an end suction, vertically split, single-stage pump. It has a back pull out design, with foot or centerline mounting arrangement, with a closed or semi-open impeller. It has a cantilever shaft/bearing arrangement designed for low stress/deflection and high bearing life, and is specifically designed for nuclear auxiliary and radwaste systems.
- Back pull out assembly for ease of maintenance
- Closed or semi-open impeller designs
- Heavy duty radial and thrust bearings
- Multiple single or mechanical seal options
- Fabricated steel baseplate that can be seismically qualified
Codes & Specifications
Operating Data
| US | SI | |
|---|---|---|
| Flow Range | Up to 3,000 USgpm | 680 m3/hr |
| Total Head | Up to 500 ft | 150 m |
| Speed | 1500-3600 rpm | 1500-3600 rpm |
Codes and Compliances
- ASME Section VIII and III including stamp (N, NS, NPT)
- Nuclear Safety Related or Non-Safety related
- Pressure Equipment Directive (PED)
- 10CFR21 and 10CFR50
- ISO 9001
- NQA-1
- RCC-M and RCC-E
- CAN/CSA-N285.0
- Other international codes as required.
Hydraulic Range
Applications
Hayward Tyler End Suction Pumps are ideal for the following applications:
Safeguard Pumps
ASME Section III Class 2
- Seal water injection pumps
- Decay heat pumps (low pressure injection)
- Reactor spray pumps
- Class 2 pumps for any other service involving low NPSH or thermal shock applications
Auxiliary and Service Pumps
ASME Section III Class 3
- Spent fuel pumps
- Borated water pumps
- Component cooling pumps
- Rad waste pumps
- Any other Class 3 or non-code pump
Documents
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Sectional Arrangement
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Service & Support
We take great pride in supporting our clients across the globe with timely service. We cover all aspects of support that might be needed during the lifecycle of your Hayward Tyler pump and/or motor.
We provide:
24/7/365 Technical Support, Engineering, Spare Parts, Repairs, and Training.
Related Products
End Suction Pumps FAQs
What is an N3 End Suction Pump?
The N3 is an end suction, vertically split, single stage pump. It features a back pull out design with foot or centerline mounting arrangement and can be equipped with closed or semi-open impellers.
What are the key design features of Hayward Tyler’s End Suction Pumps?
Hayward Tyler’s N3 End Suction Pumps feature a cantilever shaft/bearing arrangement specifically designed for low stress/deflection and high bearing life. The vertically split, single-stage design allows for easy maintenance and reliable operation in demanding nuclear environments.
What applications are End Suction Pumps suitable for?
The N3 End Suction Pumps are specifically designed for nuclear auxiliary and radwaste systems. They are commonly used in applications such as safeguard pumps (sealwater injection, decay heat pumps, reactor spray pumps), auxiliary and service pumps (spent fuel pump, borated water pumps, rad waste pumps).
What are the operational parameters of the N3 End Suction Pumps?
The N3 End Suction Pumps have the following operational parameters:
– Flow Range: Up to 3,000 USgpm (US gallons per minute)
– Total Head: Up to 500 ft
– Speed: 1500–3600 rpm
What mounting options are available with End Suction Pumps?
The N3 End Suction Pumps can be configured with either foot mounting or centerline mounting arrangements to suit different installation requirements.
What maintenance advantages do End Suction Pumps offer?
The back pull out design of the N3 End Suction Pump allows for easier maintenance as the rotating assembly can be removed without disturbing the pump casing or connected piping. This design significantly reduces maintenance time and costs.
Can End Suction Pumps be customized for specific applications?
Yes, Hayward Tyler’s in-house design engineering teams are experienced in analyzing complex engineering problems to address demanding operational issues. They can provide customized solutions, upgrades, and retrofits for both OEM and non-OEM equipment.
