Circulator Pumps B1 25/4-130

𝗕𝗿𝗶𝘁𝗧𝗵𝗲𝗿𝗺 𝗕𝟭 𝗖𝗶𝗿𝗰𝘂𝗹𝗮𝘁𝗼𝗿 𝗣𝘂𝗺𝗽

𝗕𝗲𝘀𝘁𝘀𝗲𝗹𝗹𝗲𝗿

Bronze three speed circulator for hot and cold drinking water.

𝗨𝘀𝗲 𝗶𝘁 𝗳𝗼𝗿: secondary hot water returns in houses and flats, so the tap runs hot without the wait · cylinder loops on vented and unvented cylinders · hot water return loops in hotels, guest houses, care homes and student halls, where the runs are long and the demand is constant · commercial kitchens, sports clubs and changing rooms · calorifier and water heater circuits in plant rooms · cold potable water circulation from a storage tank · any drinking water loop that wants a set speed left alone rather than automatic control

𝗥𝗶𝗴𝗵𝘁 𝗳𝗼𝗿 𝘆𝗼𝘂 𝗶𝗳

• The water is drinkable, so the body needs to be bronze

• You want three fixed speeds rather than automatic control

• You are replacing an older secondary return pump

𝗤𝘂𝗶𝗰𝗸 𝗳𝗮𝗰𝘁𝘀

Connection 1" or 1 1/2" union · Port to port 130 mm or 180 mm · Max head 4 to 12 m depending on model · Max flow 2.3 to 6.9 m3/h · Power 72 to 245 W · Max pressure 10 bar · IP44 · Class F · Rated to 110C · Bronze body · Eight models · 6 year guarantee when you register the pump

𝗛𝗼𝘄 𝗶𝘁 𝗿𝘂𝗻𝘀

Three fixed speeds on a mechanical switch, covering the pump's full power range. Set once at commissioning and left.

𝗚𝗼𝗼𝗱 𝘁𝗼 𝗸𝗻𝗼𝘄

Bronze body, composite impeller and bronze coupling nuts, for drinking water. Rated to 110C across the whole range, where the automatic bronze pumps are 95C, which matters on hot secondary returns. Electrical and thermal protection is built in, designed to protect the motor against wiring faults and voltage spikes.

𝗕𝟭, 𝗕𝟯 𝗼𝗿 𝗕𝟰? All three are bronze, for drinking water. B1 has three fixed speeds and is the cheapest. B3 and B4 have nine programs and adjust their own output, using far less power.

𝗥𝗲𝗽𝗹𝗮𝗰𝗲𝘀: Grundfos UPS 25-60 B and UPS 15-50N (130), Wilo Star-Z 25/6, SB30, SB30G, SB5 and SB60, DAB EVO VS 65/150 B, Lowara Ecocirc Basic (N), Stuart Turner 15/60B DHW and more.

𝗜𝗻 𝘁𝗵𝗲 𝗯𝗼𝘅: pump, set of nuts, 1.3 m cable with UK plug, datasheet, in a sturdy box.

Figures are from the BritTherm datasheet for each model. Check the datasheet and the fitting instructions before you order, and have the pump fitted by a competent person. Guarantee subject to registration and the guarantee terms.

• Set of nuts
• 1.3m cable with a UK plug
• Datasheet
• Packaged in sturdy box