Purewater Sectional storage tanks are designed in a modular format which allows a comprehensive range of tank size and configuration
Comprising individual bolt-up panels which are assembled on site
Designed for two specific applications:
For storing water in large capacities - from 125 litres up to 2,000,000 litres
To allow the site assembly of a water storage tank where access restrictions or other conditions deny the installation of one and two piece tanks
Purewater Sectional tanks incorporate hot press moulded Grp panels ensuring maximum dimensional stability and consistency of quality
WRAS approved
Manufactured to BS EN 13280:2001
Manufactured in compliance with an ISO9001:2001 quality control system
Manufactured in a metric modular format allowing water storage from 125 litres to 2,000,000 litres
Factory Pre-insulated including insulated base option, providing a U value of 0.8w/m²/deg.c
Available with either internal or externally flanged base arrangement, with fully self draining base option
Incorporating the industry’s largest sized man-way access at 830 x 830mm aperture.
Incorporating the Purewater one-piece raised float valve housing panel complete with screened spill over weir providing an AB air gap and 830 x 830mm access to the float valve
Assembled on site by our own fully skilled and equipped engineers, ensuring 100% control of installation. Purewater DO NOT utilize outsourced labour to assemble sectional tanks
A vast range of sectional tanks are available, and in a number of formats.
There are three different sectional tank types:
Internally Flanged Base Tanks (IFB)
The most cost effective sectional tank format suitable for:
Positioning onto an flat, solid,level & continuous foundation
Applications where there is sufficient working room all around the tank
Comprising:
Internally flanged base, externally flanged sides, internally flanged roof.
Insulated to the sides and cover only.
IFB tanks are suitable for positioning onto a flat, level and continuous foundation, normally a structural concrete slab.
IFB tanks require a minimum of 500mm working clearance all around the tank, a minimum of 600mm above the man-way height and/or 350mm above any raised float valve housing.
Externally Flanged Base Tanks (EFB)
Suitable for:
Positioning onto raised supports, typically to provide a positive head of pressure to an adjacent pump set or similar equipment.
Where an insulated base is required
Where there is sufficient working room all around the tank
Comprising:
Externally flanged base, externally flanged sides, internally flanged roof.
Insulated to the base, sides and cover.
EFB tanks are suitable for positioning onto raised supports at 1000mm or 500mm centres depending on the tank size and configuration, foundation normally comprises of brick built or concrete dwarf walls.
Raised supports must be a minimum of 500mm high.
EFB tanks require a minimum of 500mm working clearance all around the tank, a minimum of 600mm above the man-way height and/or 350mm above any raised float valve housing.
Totally internally Flanged Tanks (TIF)
Suitable for:
applications where there is minimal working room available; all panel joint flanges are accessed from inside the tank.
Positioning onto an flat level & continuous foundation
Comprising:
Internally flanged base, internally flanged sides, internally flanged roof.
Insulated to the sides and cover.
TIF tanks are suitable for positioning onto a flat, level and continuous foundation, normally a structural concrete slab.
TIF tanks require a minimum of 50mm maneuvering clearance all around the tank, a minimum of 600mm above the man-way height and/or 350mm above any raised float valve housing.
Tank foundation requirements
Where foundation tolerances are not within specification, or if erecting metric configuration tanks on an existing imperial configured support, Purewater can supply the necessary steelwork to enable installation of the tank.
Steelwork can be shimmed by our own engineers prior to installation of the tank.
Marine grade ply base boards can also be supplied to enable internally flanged tanks to be installed on supports when no flat base option is available on site.
All foundation areas are inspected and checked using laser measuring equipment prior to tank installation.
Panel Specification
Panels are manufactured from high quality SMC material hot pressed moulded to a temperature of 150°c. ensuring maximum dimensional stability.
Panels are available in a metric format, panels being 1000 x 1000mm, 1000 x 500mm & 500 x 500mm.
Individual panels are dimensionally accurate with defined sharp corners, and are precision factory drilled.
Truncated panel option for maximum strength and to provide full metre span base configuration.
Factory Pre-insulated using 25mm CFC free polyurethane foam providing a U value of 0.83 n/m²
Fully WRAS approved.
Manufactured under ISO 9002 approval.
Maximum size Manway access panel with 830 x 830mm aperture.
Purpose designed one-piece raised float valve housing panel complete with screened spill over weir to ensure AB type air gap configuration.
Access Manway
The Purewater one-piece man-way panel has a considerable 830 x 830mm access aperture. This ensures maximum space for ease of movement, and provides the largest access hatch available in the industry.
Raised Float Valve Housing
Purewater sectional tanks are supplied with a one-piece Raised Float Valve Housing panel which forms part of the roof structure in the same way as a standard roof panel. The inspection hatch opening is again a considerable 830 x 830mm offering the same access benefits as the standard man-way.
All float valve housings are supplied complete with screened spill over weirs to ensure AB air gap compliance. All Purewater spill over weirs are shrouded to prevent light ingress, thus helping to prevent the growth of algae and other organisms.
Fixings
All internal fixings are A4 grade stainless steel, external fixings are either galvanized or A4 grade stainless steel.
Bracing System
Bracing where required is provided by high grade box section steel uprights located at each vertical panel joint. Uprights are fixed using threaded stainless steel tie rods and further secured with angle brackets to the outside of the tank. All external steel components are hot dip galvanized.
Our unique bracing system allows for maximum unobstructed movement within the tank, the system also providing unequalled simplicity for future cleaning operations.
For tanks with internal divisions, Purewater use stainless steel for all uprights and associated reinforcement to divider panels throughout.
Internal divisions
Internal dividers can be fitted, providing 2 compartments enabling easy maintenance of the tanks without interruption of water supply.
Dividers are constructed from Grp tank panels and are supported by stainless steel bracing and fixings.
Tank assembly
Assembly of Purewater Sectional tanks is carried out by our own high skilled engineers. A full base inspection is undertaken before assembly can commence. Specification calls for exacting tolerances therefore laser level equipment is used, ensuring precision and accuracy from the start.
Our engineers can fit all necessary float valves, connections and other ancillary items to the tank. Purewater will accurately install float valves ensuring correct positioning of the valve in relation to overflows and spill over screen units, thus ensuring correct AB air gap configuration.
Purewater guarantee to work safely, efficiently and with respect to other site workers. Our engineers will remove all related packaging and similar waste items, ensuring a clean area when the job is completed.
Additional Services
Purewater also offer the following services:
Site survey prior to works commencing.
Strip out of existing tanks and equipment.
Base inspection using laser level equipment.
Pre-commission cleaning and chlorination including samples and certification.
Full commissioning of tanks and equipment.
Images are for illustration purposes only. Products may vary