The Stuart Turner Aquaboost iBoost V200-100-45 (MPN 46711) is a fully integrated variable speed mains water pressure and flow boosting system combining a 200-litre cold water storage tank and a high-performance multistage centrifugal pump in a single compact unit. Designed for larger domestic and light commercial properties where mains pressure and flow are insufficient to serve multiple bathrooms, showers and appliances simultaneously, the iBoost V200 delivers up to 4.5 bar pressure and 100 l/min flow — typically operating at 60 l/min at 3.0 bar. The variable speed pump control system (the V in V200) continuously adjusts pump speed via a pressure transducer to maintain a constant, programmable outlet pressure as demand fluctuates — eliminating the pressure drops and surges that occur with fixed-speed alternatives. At 536mm wide × 529mm deep × 1,504mm tall, it fits within a standard 600mm kitchen larder cupboard. WRAS approved (2301305), Made in Britain, with a 3-year warranty and UKCA/CE certification.
4.5 bar
Max Pressure
100 l/min
Max Flow Rate
200 L
Water Storage
57 dB(A)
Typical Noise
3 yr
Warranty
WRAS
Approved — CAT 3/4
ℹ CAT 3 & 4 (Domestic): The V200-100-45 (46711) is approved for Fluid Categories 3 and 4 — correct for the majority of domestic cold mains boosting applications. Where Fluid Category 5 is required (certain commercial premises), specify the V200-100-45 CAT5 (46713) instead. If unsure, consult your plumber, building inspector or water supplier.
iBoost Range — Selecting the Right Model
Model
Code
Pump Control
Storage
Max Pressure
Max Flow
Fluid Cat.
Best For
F200-100-45
46668
Fixed speed
200 L
4.5 bar
100 l/min
CAT 3/4
Domestic — budget fixed-speed option
V200-100-45
46711
Variable speed
200 L
4.5 bar
100 l/min
CAT 3/4
Domestic — programmable constant pressure ✓
V200-100-45 CAT5
46713
Variable speed
200 L
4.5 bar
100 l/min
CAT 5
Commercial / where CAT5 required
V200+200
—
Variable speed
400 L
4.5 bar
100 l/min
CAT 3/4
High-occupancy — add iBOOST +200 (46712)
All models: 230V/1Ph/50Hz, 536×529×1504mm footprint, 3-year warranty, WRAS Approved, Made in Britain. This listing covers the V200-100-45 (46711) row (✓).
The defining difference between the V200 and the fixed-speed F200 is its variable speed pump control system with pressure transducer. Rather than running at full speed whenever switched on, the V200 continuously monitors system pressure and adjusts pump speed to maintain a constant, programmable outlet pressure regardless of how many outlets are open simultaneously. The pressure setpoint is pre-set to 3.0 bar at the factory, adjustable in 0.1 bar increments via the programmable control panel — so pressure stays stable whether one tap or five outlets are open at once.
Variable speedPressure transducerPre-set 3.0 bar±0.1 bar adj.
Soft Start and Demand-Matched Speed — Quieter, Longer-Lived
Variable speed also means soft start — the pump accelerates smoothly from rest rather than switching to full speed instantly, eliminating the mechanical shock and pipe water hammer that accelerates wear in fixed-speed systems. When demand is low (a single low-flow tap), the pump runs at reduced speed — quieter operation, lower power draw and reduced heat build-up. Typical noise is just 57 dB(A). The result is a longer pump lifespan and lower running costs versus fixed-speed alternatives.
Soft start57 dB(A) typicalDemand-matched speed
200-Litre Buffer Storage — Mains Independence During Peak Demand
The V200 integrates a 200-litre usable cold water storage tank (nominal 220 litres) manufactured from food-grade polyethylene. This buffer decouples the pump from the mains supply — the tank fills continuously via a high-flow equilibrium float valve at up to 20 l/min (at 1 bar inlet pressure), while the pump draws from stored volume and delivers up to 100 l/min to the property. Peak demand — multiple showers, appliances and taps simultaneously — is met from stored supply regardless of the mains feed rate. An integrated 8-litre pressure vessel (10 bar rated) smooths minor demand fluctuations and protects the pump from cycling on micro-draws.
200 L usable20 l/min fill rate8 L pressure vessel
4.5 Bar / 100 l/min — Sized for High-Occupancy Properties
The V200-100-45 is rated to 4.5 bar maximum head (45 metres equivalent) and a maximum flow rate of 100 litres per minute. Typical operating point is 60 l/min at 3.0 bar — ample for a large family home or small residential building with multiple bathrooms, wet rooms and water-using appliances running concurrently. Maximum static inlet pressure is 7 bar; maximum static outlet is 15 metres head.
4.5 bar max100 l/min max60 l/min @ 3.0 bar typical
Fits a Standard 600mm Larder Cupboard — White Goods Appearance
Despite its 200-litre capacity, the iBoost V200 has been engineered to fit within a standard 600mm kitchen larder cupboard: 536mm wide × 529mm deep × 1,504mm tall. The front panel is acrylic-capped ABS in a white goods finish — it will not look out of place alongside a fridge-freezer or washing machine in a utility room or kitchen. Filled weight is 256 kg — floor loading must be confirmed before installation. A 3-metre pre-wired power cable simplifies electrical connection.
The iBoost V200 carries WRAS approval (2301305) — the Water Regulations Advisory Scheme certification required for any product connected to the UK mains water supply. Approved for Fluid Categories 3 and 4, covering the vast majority of domestic and light commercial installations. The tank uses a Type AF air gap. Where Cat 5 is required, specify the V200-100-45 CAT5 (46713) instead.
WRAS 2301305CAT 3 & 4Type AF air gap
Control Panel, Status Indicators and Dry-Run Protection
The front-mounted programmable control panel provides pressure setpoint adjustment, system status and fault indicators. Dry-run protection monitors water availability and shuts the pump down automatically if the tank empties — preventing pump damage during sustained high-demand periods or supply interruptions. A system check valve prevents backflow, and a flexible outlet hose (G¾ female × 22mm push-in, 220mm long) is included for easy commissioning.
The iBoost V200 carries a 3-year manufacturer's warranty and is Made in Britain by Stuart Turner, who have manufactured pumps in Henley-on-Thames, Oxfordshire since 1906. Pump body is brass and stainless steel with stainless steel impellers; the motor is a continuous-duty (S1) induction motor with current overload sensor. Certified to UKCA and CE. Register the product with Stuart Turner at installation to activate the warranty.
3-Year WarrantyMade in BritainUKCA / CE
Expandable to 400 Litres with iBOOST +200 (46712)
For very high-occupancy properties — large houses, HMOs, small hotels or residential blocks — the V200 can be paired with the iBOOST +200 expansion tank (46712) to create a V200+200 system with 400 litres total storage. The +200 tank includes a high-flow fill valve for rapid refill. The V200 booster unit (46711) and +200 tank (46712) are ordered separately.
Expandable to 400 L+200 tank = 46712
Technical Specification — iBoost V200-100-45 (Stuart Turner Official Data)
General
Product Code
46711
GTIN
5050400467113
Warranty
3 years
WRAS Approval
2301305 — WRAS Approved Product
Conformity Certification
UKCA / CE
Fluid Category
CAT 3, CAT 4
Performance
Maximum Pressure (closed valve)
4.5 bar (45 m head)
Maximum Flow Rate
100 l/min
Typical Operating Point
60 l/min at 3.0 bar
Max Inlet Pressure (static)
7 bar (700 kPa)
Max Outlet Pressure (static)
15 m head
Ambient Temperature Range
4°C min — 30°C max
Pump
Pump Type
Multistage centrifugal
Pump Control System
Variable speed with pressure transducer
Pressure Setpoint
Pre-set 3.0 bar; adjustable in 0.1 bar increments
Control Interface
Programmable controls (front panel)
Pump Body
Brass / stainless steel
Pump Impeller
Stainless steel
Duty Rating
Continuous S1 at 5 l/min and above
Motor Type
Induction motor with current overload sensor
Typical Noise
57 dB(A)
Electrical
Power Supply
230V a.c. / 1Ph / 50Hz
Power Consumption (P1)
996 Watts
Full Load Current
6.8 Amps
Fuse Rating
10 Amps
Power Cable
3 metres (pre-wired)
Water Tank
Nominal Tank Volume
220 litres
Usable Water Capacity
200 litres
Tank Material
Polyethylene (food grade)
Float Valve Type
Equilibrium (high flow, low noise)
Tank Fill Rate
20 l/min (at 1 bar inlet pressure)
Air Gap Type
Type AF
Pressure Vessel
8 litres at 10 bar
Connections
Inlet Connection
G½ male
Pump Outlet Connection
G¾ male
Outlet Flexible Hose
G¾ female × 22mm push-in, 220mm long
Overflow
G1¼ compression
Physical
Width
536 mm
Depth
529 mm
Height
1,504 mm
Front Panel Material
Acrylic-capped ABS
Weight — empty (incl. fittings)
56 kg
Weight — filled
256 kg
⚠ Floor Loading: Filled weight is 256 kg. Standard domestic timber floors are unlikely to be adequate without structural reinforcement. A concrete floor or reinforced base is typically required. Always have floor loading capacity confirmed by a structural engineer or qualified installer before specifying the installation location.
ℹ Installation: Must be installed by a qualified plumber in accordance with the Water Supply (Water Fittings) Regulations 1999, the iBoost Installation Guide and BS EN 806. Electrical connection must be made by a qualified electrician to a 10A fused spur. Register the product with Stuart Turner at installation to activate the warranty.
Frequently Asked Questions
What is the difference between the V200 and the F200?
Both models share the same 200-litre tank, 4.5 bar maximum pressure, 100 l/min flow rate, dimensions and WRAS approval. The difference is the pump control system. The F200 is fixed speed — the pump runs at full speed whenever there is demand. The V200 is variable speed — the pump modulates continuously to maintain a constant programmable outlet pressure as demand rises and falls. The V200 is quieter under low demand, uses less energy at part load, starts more gently and maintains more stable pressure when multiple outlets run simultaneously.
What is the V200 pre-set to and can I change it?
The V200 leaves the factory pre-set to 3.0 bar outlet pressure. This can be adjusted via the programmable control panel in 0.1 bar increments up to the 4.5 bar maximum. Adjustment is typically done at commissioning by the installing engineer to suit the property's pipework, appliances and user requirements.
What is the difference between the V200 (46711) and the V200 CAT5 (46713)?
The V200-100-45 (46711) is approved for Fluid Categories 3 and 4 — suitable for the majority of domestic and light commercial cold mains boosting applications. The V200-100-45 CAT5 (46713) adds a weir overflow to the tank, making it approved for Fluid Category 5 — required in certain commercial premises and wherever the water regulations demand the highest level of backflow protection. For residential installations, CAT5 is not normally required; consult a plumbing engineer or building inspector if unsure.
Does the iBoost V200 work if mains pressure is very low or intermittent?
Yes — this is precisely what the iBoost is designed for. The 200-litre storage tank fills continuously from the mains via the equilibrium float valve (up to 20 l/min at 1 bar inlet pressure). Even if mains pressure is low or temporarily interrupted, the stored volume provides the pump with sufficient supply to meet household demand. Dry-run protection shuts the pump down if the tank empties. Maximum static inlet pressure is 7 bar.
What floor loading does the V200 require?
Filled weight is 256 kg — this must be accounted for in floor loading calculations. A standard domestic timber floor is unlikely to be adequate without structural reinforcement; a concrete floor or reinforced base is typically required. Always confirm floor loading capacity with a structural engineer or qualified installer before specifying the installation location.
Related Products
iBOOST +200 Expansion Tank (46712)
Adds 200 L — total 400 L V200+200 system
iBOOST F200-100-45 (46668)
Fixed-speed 200 L booster — lower cost option
iBOOST V200-100-45 CAT5 (46713)
Variable speed with weir overflow for CAT5
BTU & WATT Calculator
Room Dimensions
Room Type
Living Room
Bedroom
Kitchen
Bathroom
Conservatory
Hallway
Glazing Type
Single Glazed
Double Glazed
Triple Glazed
External Walls
0 Wall
1 Wall
2 Walls
3 Walls
4 Walls
Insulation Level
Poor
Average
Good (New Build)
Required Heating
0
Watts
0
BTUs
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