Description

The Amazon Brass Pump range is undoubtedly the ‘Rolls Royce’ of Grundfos shower pumps - designed and manufactured to the highest of standards. With brass impellers and machined brass stampings, these pumps can be genuinely described as ‘Heavy Duty’ since each model offers high performance and durability. These continuously rated regenerative pumps are suited to domestic, commercial or light industrial use. Products within this range are fitted with long-life silicon carbide seals and anti-vibration feet to keep the operating noise to a minimum.

All brass pumps are supplied with stainless steel flexible hoses and are covered by a comprehensive 5 years warranty. A brass pump will transform any compatible shower system into an experience that is both invigorating and memorable.


Design & Features:

  • Twin impeller - 2.0 Bar
  • Continuously rated regenerative pump
  • Anti-vibration feet - keeping noise to a minimum
  • Long-life carbide seals - ensure reliability for years to come
  • Brass impellers and machined brass stampings
  • Supplied with stainless steel flexible hoses
  • Suitable for use with 22mm pipework


Additional Info:

  • Part Number: STP-2.0 B
  • Guarantee: 5 years
  • Installation of a Surrey flange is recommended for pumps up to 3 bar pressure
CE Approved 5 Year Guarantee

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£234.00 (Inc. VAT)

19 Available

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Grundfos Watermill Amazon 2.0 Bar Twin Impeller Positive Head Pump - STP-2.0 B Reviews

Add your own review
4.8/ 5
26 reviews
  • Robin
    5/ 5

    My 16 year old ShowerForce EasyBoost pump started to leak. I'm very pleased I chose to replace it with a Grundfos Watermill Amazon 2.0 Bar Twin Positive Head STP-2.0B brass pump. Plumbworld, kept me informed by email about delivery and the pump was very well packed. The pump installation was straight forward but I redesigned the 22mm pipework in my airing cupboard to allow for a possible future feed to a second shower room; this required careful design. I fitted Pegler full bore lever valves to the tops of each of the 4 supplied flexible tails to make isolation for periodic cleaning of the pump filters a simple matter. I placed the pump on a 300mm x 300mm x 25mm granite paving slab and insulated this from the wooden floor boards with strips of "P" profile 3-5mm gap Stormguard EDPM door/window seal. The bathroom is next to the airing cupboard and the shower head is 330mm below the bottom of the cold water tank. With the pump fitted, but switched off, flow through the Pegler Mimo thermostatic mixer valve (min. 0.1 Bar) and Groher eco (min. 1 Bar input and restricted 9 l/min flow rate) shower head was approx. 0.7 litres per minute. When the pump is switched on and the shower valve is opened, the pump starts fine and delivers approx. 8 l/m. The noise of the old pump was much louder than the sound of water from the shower head but the new Grundfos pump cannot be heard over the sound of the shower water. The noise from the pump in an adjacent bedroom is no longer intrusive and would be unlikely to disturb a sleeping child.

  • Shyann Peterson
    5/ 5

    This is a great shower pump. I bought it to replace a plastic bodied pump bought from a DIY store a couple of years ago. That pump failed leaving water leaking through the ceiling of the room below. I ordered this pump because it had great reviews and haven't been disappointed, it is much quieter than the pump it replaced and much more powerful. The push fit connections make fitting it into an existing installation a breeze, I hardly even needed the toolbox. Plumbworld had the best price for this unit and have given great service with quick delivery, they even accommodated my request to change delivery location when I realised I wouldn't be around to accept delivery at the original address. I'm hoping the pump gives long and trouble free service.

  • Nigel R
    5/ 5

    This pump was straightforward to install, it looks good, and functions very effectively. Even the Grundfos packaging is well designed! It comes with 4 push-fit 22mm flexible adapters. These dont have integral isolation valves, but this wasnt an issue for me because my installation already had adequate means of isolation and drainage. The brass construction and continuous rating make this unit more expensive than plastic alternatives, but hopefully this will pay off in the long term.

  • Gerry Kinsale
    5/ 5

    At first glance one can see that this pump is beautifully made, with the purposeful design of the motor being augmented by beautiful brass water housing and connectors. It definitely looked a quality piece of kit - and performs as well as it looks, supporting the old engineer adage if it looks right, it performs right ! Pump is easy to fit and performs well - definitely the strong but silent type. The quality of construction promises many years of trouble-free service.

  • Dennis Bonser
    5/ 5

    purchased this to replace old pump which lasted 5 years, this pump with its all brass construction is leagues above my old pump a lot more robust and far far less noisy, would recommend this pump to anyone and plumb world delivery was first class