Bristan Varispeed Si Pump 50 Pressure 1.5 Bar

2 year warranty

No quibble guarantee

Delivery within 3 -5 days

Product Characteristics

Any mixer shower can be used with an electric pump from a gravity fed system to give higher flow rates and thus create a power shower.
Pumps cannot be used with combination boilers, unvented and pressurised mains systems.
Variable speed control for flow and pressure adjustment.
Single impeller for boosting a single water supplie to an appliance or blended water from a shower mixer to a shower head.
Supplies equivalent to 50’ (15 metres) 1.5 bar head pressure producing up to 13 litres per minute flow.
Supplied with four flexible connectors with push fittings. 15 minute motor rating.

Product Features

Individual pumps require a minimum head to operate automatically ( varies from pump to pump, usually 200-300mm vertical distance from water level in tank to handset), if this is not achieved a negative head kit may be required.
Pumps will empty both hot and cold tanks more quickly than a standard system, please keep this in mind when selecting size of pump. You may want to check the capacity of both water tanks and think about how long and often the shower will be used.
Pump must be installed to all relevant IEE Wiring Regulations (BS 7671) and be protected with a Residual Current Device (RCD).
Isolating switch should be of the pull cord type, if not it should be out of reach of person using bath/shower
It is advisable to fit easily accessible isolating and non-return valves to both inlets (where not already supplied). This will ensure future maintenance is made easy and compliance with Water Regulations.

Technical Diagram

Please click below for the Installation Guide

Full Installation Guide PDF

Product Specifications

Product Pipe Connections (mm) Stalled pressure (bar) Motor Rating Flextible Connections Pre-wired with fitted flex Variable Flow Control

Singlespeed 15 1.60 15 min on/60 min off Yes No No

Varispeed 50 15 1.60 15 min on/60 min off Yes No Yes

Varispeed SI 15 2.34 15 min on/60 min off Yes No Yes

Duraspeed 15 1.60 Continuous Yes Yes Yes

Duraspeed 2 15 1.90 Continuous Yes Yes Yes

Jetforce 55 15 1.68 30 min on/60 min off Yes Yes No

Jetforce 75 15 2.08 30 min on/60 min off Yes Yes No