Grundfos Shower Pumps & Macerat Grundfos Amazon STN-4.0 B Universal Brass Twin Impeller Regenerative Shower Booster Pump 4.0 Bar

Grundfos Amazon STN-4.0 B Universal Brass Twin Impeller Regenerative Shower Booster Pump 4.0 Bar

Designed and manufactured to the highest standards, the Amazon Brass Pump range is constructed from precision machined brass impellers and brass body stampings.

The Grundfos Amazon STN-4.0 B is a Positive & Negative head shower booster pump used to increase water pressure to a gravity fed hot water system. It’s ideal for boosting water to single/multiple showers where the outlets are above or below the cold water tank.

Product Details

• Brand: Grundfos
• Product Code: 96788176
• Model: STN-4.0 B
• Dimensions: (L)284 x (W)225 x (H)283mm
• Electrical Rating: Continuous
• Cable Length: 1.5m
• Voltage (V): 230
• Power Input (W): 790
• Fuse: 10A
• Closed Valve Pressure (bar): 4.1
• Max. Flow rate (l/min): 50
• Minimum Pipe Size: 22mm
• Low noise design – quiet induction motor and minimal turbulence pump head
• Continuously rated
• Supplied with 22mm Stainless steel hoses
• Fitted with long-life silicon carbide seals
• Twin (STN) & Single (SSN) impellers
• WRAS Approved
• IPX2 water ingress protection
• Regenerative impeller designed to overcome air pockets
• Premium brass pump head and impeller
• Auto activation in Negative Head operation
• Dry run protection built in

5 Year Guarantee

Please note: Shower pumps are not suitable to be installed with combination boilers.