Elvaro Water Pressure Booster Sets
The Elvaro range is Tricel’s combined GRP cold water storage tank and variable speed pump set — a 2-in-1 solution that solves low or inconsistent water pressure for residential, commercial and industrial applications. Variable speed drives eliminate water hammer, reduce energy consumption and deliver constant pressure on demand.
- •Variable speed drives — constant pressure; no water hammer; energy savings
- •Elvaro B: GRP tank above pump set on steel frame
- •Elvaro T: submersible pumps inside tank, VSDs on top, max. storage in minimum footprint
- •500 to 2,250 litres; 1.0–5.0 L/s; 2.0–6.0 bar (Elvaro T)
- •WRAS approved tank section – Cat 4 AF standard; Cat 5 AB available
- •Standard factory configuration – ready to operate on installation
Elvaro Range — B vs T Overview
Elvaro B
Tank on frame above pumps
VSDs beneath tank • More tank capacity without larger footprint
Elvaro T
Submersible pumps inside tank
VSDs on top • 500–2,250L • Max storage, min footprint
What is an Elvaro water pressure booster set?
An Elvaro water pressure booster set is a combined GRP cold water storage tank and variable speed pump set manufactured by Tricel Water UK. It is designed to solve low or inconsistent mains water pressure by storing water in an insulated GRP tank and boosting it to a constant set pressure using variable speed drives (VSDs). The VSDs automatically adjust pump speed to match demand — ramping up during peak draw and cycling off when demand ceases — eliminating water hammer, reducing energy consumption and extending pipework life. The Elvaro range is available in two configurations: the Elvaro B (insulated GRP tank mounted on a steel frame above the pump set, with VSDs beneath the tank) and the Elvaro T (submersible pumps inside the tank with VSDs mounted on top, maximising storage in minimum footprint). The Elvaro T delivers a flow range of 1.0 to 5.0 litres per second and a pressure range of 2.0 to 6.0 bar, with nominal tank capacities from 500 to 2,250 litres. The tank section carries WRAS approval. Standard Cat 4 (Type AF) air gap is fitted as standard; Cat 5 (Type AB) air gap is available on larger Elvaro T tanks. The system operates from a standard factory configuration and is ready to deliver constant water pressure on start-up.
01
Overview
What Is the Elvaro Range?
The Elvaro range is Tricel’s latest generation of intelligent water pressure booster systems. Each Elvaro unit combines a WRAS-approved GRP cold water storage tank with a variable speed pump set in a single, compact, factory-configured product.
Low or inconsistent mains water pressure is a common problem in high-rise residential buildings, commercial properties on poor mains supplies, rural sites, and buildings with high simultaneous demand. The Elvaro resolves this by storing mains water in the GRP tank and boosting it to the required pressure on demand via the variable speed pump set. The system runs continuously from a user-set pressure target, adjusting pump speed automatically as demand varies throughout the day.
The range is designed for both new-build and replacement installations. Smaller Elvaro T units can pass through standard doorways without disassembly, making direct replacement of older fixed-speed booster sets straightforward on constrained sites.
WRAS approval status: The GRP tank section of the Elvaro carries WRAS approval. Full WRAS approval of the pump set is currently in process. Confirm documentation requirements at the time of order.
How the Elvaro solves water pressure problems
Storage → boost → constant pressure
- Mains water fills the insulated GRP tank via the float valve (Cat 4 or Cat 5 air gap)
- When an outlet opens, the pressure in the distribution system drops below the set point
- The VSD senses the pressure drop and ramps up the pump to restore pressure
- When demand drops, the VSD ramps the pump down; when demand ceases, the pump stops
- Constant pressure is maintained regardless of demand fluctuation — no water hammer
Elvaro Tank Builder
Use the Elvaro Tank Builder tool to identify the correct tank size for your required flow and storage capacity before requesting a quotation.
02
Variable Speed Drive Advantage
Why Variable Speed Drives Make the Difference
Every Elvaro unit uses variable speed drives (VSDs) to control pump speed in direct proportion to demand. This is the defining technical characteristic of the range — and the reason Elvaro outperforms conventional fixed-speed booster sets on four measures simultaneously.
No water hammer
Pumps ramp, not switch
Fixed-speed pumps start and stop abruptly, sending a pressure shockwave through the pipework. VSDs ramp the pump speed up and down gradually — the shockwave never forms. Pipework lasts longer. Fittings and valves are protected.
Energy savings
Power matched to demand
A fixed-speed pump draws full power regardless of demand. A VSD-controlled pump draws only the power required for the actual load. During periods of low demand — night-time, weekends, low-occupancy phases — energy consumption drops in proportion to pump speed.
Quieter operation
Lower speed, lower noise
Because the pumps run at only the speed the system requires, noise levels are lower than equivalent fixed-speed units — particularly relevant for Elvaro units installed in residential buildings, hotels, healthcare facilities and anywhere noise is a concern.
Constant pressure delivery
Set point maintained automatically
The VSD continuously monitors system pressure and adjusts pump speed to hold the set point regardless of how many outlets are open. One shower or twenty — the pressure remains consistent. No pressure swings, no cold spots in the hot water system.
03
The Elvaro Ranges
Elvaro B and Elvaro T — Which Is Right for Your Project?
Both ranges use the same variable speed drive technology and deliver the same performance advantages. The difference is in how the tank and pump set are physically arranged — which determines which is better suited to a specific installation.
Tank above pump set
Elvaro B
GRP tank mounted on a steel frame above the variable speed pump set. Ideal where more tank capacity is required without increasing the floor footprint.
How it works
The insulated GRP storage tank sits on a steel frame, elevated above the pump set below. Variable speed drives are mounted beneath the tank, controlling the pumps. Water is drawn from the tank by the pump set and boosted to the required system pressure. Maintenance can be carried out on the pump set without shutting down the water supply.
Tank position
Above pump set on steel frame
VSD position
Beneath the tank
Power supply
230v/1ph/50Hz std; 415v/3ph/50Hz option
Operation
Duty/standby or duty/assist (auto)
Pressure control
Adjustable set point — constant discharge
Low level protection
Float switch
Alarm
Common volt-free alarm system
Best for
More capacity; pump maintenance access
Submersibles inside tank
Elvaro T
Submersible pumps inside the GRP tank with VSDs on top. Maximises water storage in the smallest possible footprint. Smaller units fit through standard doorways.
How it works
Submersible stainless steel pumps sit inside the GRP storage tank itself. The water that surrounds the pumps counts towards the storage volume — the pump set occupies no additional floor space outside the tank. VSDs are mounted on top of the tank, keeping the combined unit footprint as small as possible. Available in single, twin and triple pump configurations.
Tank capacity
500 to 2,250 litres
Flow range
1.0 to 5.0 L/s
Pressure range
2.0 to 6.0 bar
Pump type
Submersible — AISI 304 stainless steel
VSD position
Mounted on top of tank
Configurations
Single, twin, triple pump
Air gap
Cat 4 AF std; Cat 5 AB available
Best for
Maximum storage; restricted footprint
04
Elvaro B Range
Elvaro B — Tank Above Pump Set
The Elvaro B is designed for installations where increased cold water storage capacity is required but the available floor footprint cannot be extended. By mounting the insulated GRP tank on a structural steel frame above the pump set, the Elvaro B achieves greater storage volume within the same footprint a standard booster set would occupy alongside a separate tank.
The VSDs and control system are mounted beneath the tank, facing forward for easy access. The pump set is accessible for maintenance, inspection and replacement without interrupting the water supply from the tank above — a practical advantage for occupied buildings and 24-hour facilities.
The Elvaro B comes in a standard factory configuration with all controls pre-set. On start-up, the system automatically begins delivering constant pressure to the set point — no commissioning of the VSD control logic is required before the system is operational.
Control features
Key advantages
05
Elvaro T Range
Elvaro T — Submersible Pumps Inside the Tank
The Elvaro T is designed to maximise cold water storage within the smallest possible footprint. Rather than placing the pump set alongside or beneath the tank, the Elvaro T uses submersible pumps positioned inside the tank body itself. The water stored in the tank cools and surrounds the pumps — and every litre of stored water is usable. The pump set occupies no additional floor space outside the tank.
VSDs are mounted on top of the tank, keeping the unit self-contained in plan. Smaller Elvaro T units are dimensioned to pass through standard doorways without disassembly — making direct replacement of an older booster set practical even in plant rooms that cannot be accessed by fork-lift or large equipment.
Elvaro T — Technical Summary
Tank capacity
500–2,250 litres
Flow range
1.0 to 5.0 L/s1.0 to 5.0 L/s
Pressure range
2.0 to 6.0 bar
Pump type
Submersible, AISI 304 SS
Configurations
Single / twin / triple pump
Manifold (single)
1¼” BSP
Manifold (twin)
1½” BSP
Manifold (triple)
2” BSP
Air gap (standard)
Cat 4 Type AF
Air gap (option)
Cat 5 Type AB (larger tanks)
Insulation
25mm — sealed lid
06
B vs T Comparison
Elvaro B vs Elvaro T — Full Comparison
Both ranges deliver the same variable speed pressure control. The choice between B and T depends on installation geometry: how much floor space is available, how much storage is needed, and whether pump maintenance access without system shutdown is a priority.
|
Feature
|
Elvaro B
|
Elvaro T
|
|---|---|---|
|
VSD position
|
Beneath the tank
|
On top of the tank
|
|
Pump position
|
Below tank, on steel frame base
|
Submersible inside the tank
|
|
Tank position
|
Above pump set on steel frame
|
Integral — pumps inside tank
|
|
Footprint advantage
|
More capacity in same floor area vs tank + separate pump set
|
Maximum storage in minimum footprint
|
|
Tank capacity
|
Confirm at enquiry
|
500 to 2,250 litres
|
|
Flow range
|
Confirm at enquiry
|
1.0 to 5.0 L/s
|
|
Pressure range
|
Confirm at enquiry
|
2.0 to 6.0 bar
|
|
Pump maintenance
|
Without system shutdown
|
Tank must be taken out of service for submersible access
|
|
Power supply
|
230v/1ph/50Hz std; 415v/3ph/50Hz option
|
Confirm at enquiry (single/twin/triple)
|
|
Pump configurations
|
Confirm at enquiry
|
Single, twin, triple
|
|
Air gap
|
Confirm at enquiry
|
Cat 4 AF std; Cat 5 AB available
|
|
Fits through doorway
|
Confirm at enquiry
|
Smaller units — without disassembly
|
|
Factory configuration
|
Standard — ready on start-up
|
Standard — ready on start-up
|
|
Best for
|
Maximum capacity; maintenance convenience
|
Compact footprint; replacement installs
|
07
Applications
Where Elvaro Booster Sets Are Used
Elvaro booster sets are used in domestic water supplies and wherever low or inconsistent mains pressure needs to be resolved for residential, commercial or industrial premises. Cat 5 (Type AB) air gap is available on Elvaro T for irrigation, washdown and cleaning system applications.
Healthcare & NHS
High-Rise & Multi-Storey
Infrastructure & Utilities
Fire Protection
Data Centres
Industrial & Manufacturing
Education
Agriculture
Food & Beverage
Local Authority & Public
Cat 5 applications
Cat 5 (Type AB) air gap is available on larger Elvaro T units for irrigation, washdown and cleaning system applications where a Cat 5 backflow risk exists. Confirm Cat 5 availability for the specific tank size at the time of enquiry. See Cat 5 break tanks →
Replacement installations
Smaller Elvaro T units can pass through a standard doorway without disassembly, making them a practical direct replacement for older fixed-speed booster sets in constrained plant rooms. Confirm unit dimensions against the doorway at the time of enquiry.
08
Technical Specification
Elvaro Technical Specification
The following specification details apply to the Elvaro range. Where values are specific to the T or B range, this is noted. Confirm all parameters at the time of enquiry for the specific system configuration required.
|
Elvaro T
|
Technical Specification
|
|---|---|
|
Tank capacity
|
500 to 2,250 litres (nominal)
|
|
Tank construction
|
GRP — WRAS approved tank section
|
|
Insulation
|
25mm — sealed lid
|
|
Pump type
|
Submersible — AISI 304 stainless steel
|
|
Pump configurations
|
Single, twin, triple pump
|
|
Flow range
|
1.0 to 5.0 litres/second
|
|
Pressure range
|
2.0 to 6.0 bar
|
|
VSD position
|
Mounted on top of tank
|
|
Manifold
|
Stainless steel c/w pressure vessel, isolating valves, NRVs
|
|
Connection (single)
|
1¼” BSP
|
|
Connection (twin)
|
1½” BSP
|
|
Connection (triple)
|
2” BSP
|
|
Air gap (standard)
|
Cat 4 Type AF
|
|
Air gap (option)
|
Cat 5 Type AB available on larger tanks
|
|
Factory configuration
|
Standard — ready to operate on start-up
|
|
Elvaro B
|
Technical Specification
|
|---|---|
|
Tank construction
|
Insulated GRP — WRAS approved tank section
|
|
Tank position
|
Mounted on structural steel frame above pump set
|
|
VSD position
|
Mounted beneath the tank
|
|
Power supply (standard)
|
230v / 1ph / 50Hz
|
|
Power supply (option)
|
415v / 3ph / 50Hz
|
|
Pressure control
|
Adjustable set point — constant discharge pressure
|
|
Pump operation
|
Auto duty/standby or duty/assist
|
|
Low level protection
|
Float switch
|
|
Alarm
|
Common volt-free alarm system
|
|
Maintenance
|
Pump set accessible without system shutdown
|
|
Factory configuration
|
Standard — ready to operate on start-up
|
Elvaro Tank Builder
Calculate the right Elvaro size before you enquire
The Elvaro Tank Builder tool calculates the appropriate tank size for your required flow rate and storage capacity. Start with the Elvaro B or T, enter your parameters and get an accurate size recommendation in minutes.
09
Specification Support
Request an Elvaro Booster Set Quote
Provide the required flow rate, system pressure, storage capacity and installation details. Tricel will confirm the appropriate Elvaro range and unit configuration and provide a quotation.
Information needed for an Elvaro quotation
Required flow rate at duty point (L/s)
Incoming mains supply pressure (bar)
Required cold water storage capacity (litres)
Single, twin or triple pump configuration
Installation location (internal / external)
Power supply available
Required system pressure at duty point (bar)
Incoming mains supply flow (L/s)
Elvaro B or T preference (or confirm at enquiry)
Duty/standby or duty/assist requirement
Available footprint and doorway dimensions
Air gap required (Cat 4 or Cat 5)
Request an Elvaro quote
Tricel’s technical sales team at Tricel Lanark handles all Elvaro enquiries. Provide the duty point and storage requirement to get started.
10
Related Products & Resources
Related Products & Resources
Elvaro booster sets work with Tricel’s full range of GRP cold water storage tanks and CTPS enclosures. The following resources support specification and sizing across the range.
Elvaro Range
11
FAQs
Elvaro Booster Set FAQs
Common questions from engineers, installers and facilities managers.
What is an Elvaro water pressure booster set?
An Elvaro water pressure booster set is a combined GRP cold water storage tank and variable speed pump set manufactured by Tricel Water UK. It solves low or inconsistent mains water pressure by storing water in an insulated GRP tank and boosting it to a constant set pressure using variable speed drives. The system automatically adjusts pump speed to match demand, eliminating water hammer, reducing energy consumption and maintaining constant pressure. Available in Elvaro B (tank on steel frame above pump set) and Elvaro T (submersible pumps inside tank, VSDs on top) configurations.
What is the difference between the Elvaro B and Elvaro T?
The Elvaro T has submersible pumps inside the GRP tank with VSDs mounted on top. This maximises water storage in the smallest footprint and suits installations where floor space is limited. Smaller T units can pass through standard doorways. The Elvaro B has the GRP tank mounted on a steel frame above the pump set, with VSDs beneath. This allows more tank capacity in the same footprint as a conventional tank-beside-pump-set installation, and enables maintenance of the pump set without shutting down the water supply.
What does VSD stand for and why is it important?
VSD stands for Variable Speed Drive. It controls pump speed in proportion to water demand rather than running at a fixed speed. VSDs eliminate water hammer (the pressure shock from abrupt pump starts/stops), extend pipework life, reduce energy consumption during low-demand periods and maintain constant pressure regardless of how many outlets are open. The Elvaro uses VSDs on both the B and T ranges.
What flow and pressure does the Elvaro T deliver?
The Elvaro T range delivers a flow range of 1.0 to 5.0 litres per second and a pressure range of 2.0 to 6.0 bar. Submersible pumps are constructed from AISI 304 stainless steel. Available in single, twin and triple pump configurations. Confirm the specific duty point with Tricel at enquiry stage.
What tank capacity is available in the Elvaro T?
The Elvaro T is available from 500 to 2,250 litres nominal capacity. The tank is insulated with 25mm insulation and has a sealed lid. Standard Cat 4 (Type AF) air gap is fitted as standard; Cat 5 (Type AB) air gap is available on larger tanks for applications requiring fluid category 5 backflow protection. Use the Elvaro Tank Builder calculator to identify the appropriate size.
Can an Elvaro booster set fit through a standard doorway?
Yes. Smaller units in the Elvaro T range can pass through standard doorways without disassembly. This makes them practical for direct replacement of older booster sets in plant rooms with limited access. Confirm the specific unit dimensions for the required capacity and pump configuration with Tricel at enquiry stage.
What information is needed to specify an Elvaro?
Required information includes: required flow rate (L/s) and system pressure (bar) at the duty point; incoming mains supply pressure and flow; required cold water storage capacity; preferred Elvaro range (B or T) if known; pump configuration (single, twin, triple); duty/standby or duty/assist requirement; installation location; available footprint; power supply; and air gap category (Cat 4 or Cat 5). Use the Elvaro Tank Builder to assist with sizing before contacting Tricel on +44 (0)1934 421 499 or websales@tricelwater.co.uk.
Tricel Water UK — Elvaro Range
Solve low water pressure. Specify an Elvaro.
Provide your duty point, storage requirement, installation location and power supply details. Tricel will confirm the right Elvaro range and configuration and provide a quotation. Use the Tank Builder first to identify the appropriate tank size.
This product guide is provided for general guidance and information purposes only. It does not constitute engineering advice and should not be relied upon as the sole basis for design decisions. © 2026 Tricel Water. All rights reserved.
