Structural Tanks Overview
Urbans Aqua stocks residential and light commercial Structural® Poly Glass tanks, brine tanks and tank components for quick shipment to our dealers.
Structural® tanks have been the industry standard for quality and performance for over 30 years. The 6” to 13” vessels have a 10-year warranty; the 14” to 16” have a 5-year warranty. Structural® tanks feature a one piece, seamless high-density polyethylene liner and an encapsulated, leak free engineered polymer inlet.
Residential Brine Tanks
Round & Square Brine Tanks
Pentair Structural blow molded brine tanks are manufactured to high standards which guarantee years of trouble-free performance. Available in different size and colors and with blow molded lids, or assembled with salt grid, brine wall and cap, overflow fitting and safety brine valve assembly.
Features
- Attractive styling
- Heavy duty design
- Rigid, high impact, non-toxic polyethylene
- Exceptional resistance to stress cracks
- Designed to reduce salt bridging
- Optional molded salt grid for uniform brining
Options
- Pre-drilled
- Pre-assembled
- Slotted brine well
- Safety brine valve assembly (2310)
- Colors – Standard
- Black
- Almond
Commercial Brine Tanks
Durable materials and quality production technology offer exceptional stress-crack properties for years of trouble free service. Black color affords UV protection.
Features
- Heavy duty design
- Rigid, high-impact, non-toxic polyethylene
- Exceptional resistance to stress cracks
- Optional molded salt grid for uniform brining
- Shipped in a durable re-shippable container
- Colors – Black
Round Brine Tanks Brochure
Structural Fiberglass Tanks
Feature & Benefits
- Slim diameter with capacities from 2 to 49 gallons.
- Unmatched strength and chemical resistance.
- Threaded inlet comes in various sizes – 2.5”, 4” and 4.5”.
- Dome Hole available on select sizes.
- Tested and certified by Water Quality Association (WQA) to NSF/ANSI Std. 44 for material safety and structural integrity requirements and Std. 372 for low lead compliance.
- Color Options
- AL – Almond
- BL – Blue
- BK – Black
- GR – Gray
- NA – Natural
Operating and Design Parameters
- Max pressure – 150 psi
- Max temperature – 120° F
- Tested to 250,000 cycles without leakage
- Safety factor – 4:1
- Minimum burst at 600 psi
Applications
- Residential / Light Commercial Softening
- Residential / Light Commercial Filter
- Portable Exchange Tanks
Download Information
- Tanks Typical Volume Data
- Structural Tanks Composite Specification
- Pressure Vessel Lifting Handling and Installation
- Fiberglass Tanks Poly Glass Vessels Spec Brochure
Riser Tubes, Riser Pipes, Standpipes, Distributor Tubes for Structural & Clack
A distributor tube consists of a plastic or stainless-steel tube. Attached to this distributor tube is a diffusor, collector, strainer or basket. Its purpose is to produce even flow through an ion exchange or filter media bed. It also functions as a retainer of the media in the tank. The screen size of the basket should be appropriate to the media being used. The tube length is cut to match the tank size and valve.
When to Use Gravel Sub-Fill
| Equipment | Yes/No | Comment |
|---|---|---|
| Carbon Filters - Backwashable Type | Yes | If recycling carbon, separation of gravel from carbon is required. |
| Carbon Filters VOC Removal | No | Backwashing a carbon filter used for VOC removal will upset the mass transfer zone and may result in leakage of the contaminants. |
| Acid Neutralizers | Yes | Upflow & Downflow systems |
| Softening - Upflow | No | N/A |
| Softening - Downflow | Yes | Creates a better flow pattern. |
Urbans Aqua stocked distributor tubes.
Distributor Tubes & Applications
| Stocked Distributor Tube Types | SKU | Comment |
|---|---|---|
| Distributor Tube & Basket 13/16 x 60” | DSTTUB13/16X60 | Best suited for Clack 890 In/Out Head |
| Distributor Tube MB3460 | DSTTUB1X60 | High Flow, Heavy Duty |
| Distributor Assembly 32mm x 72" | DSTTUB32MM | Fleck 7000 Valves must use this model |
| Distributor Tube 55" w/930 Basket SL | DSTTUB56/930 | All round general purpose |
What is the correct distributor tube length for softeners and filters?
When rebedding or retrofitting a softener or filter it is always a good idea to replace the distributor tube. The easiest way to figure out the correct length of the distributor tube is to cut the tube the exact same length as the existing tube. However, if you’re using a different brand of control valve there may be differences in the length of cut.
- Clack valves compensate for almost every existing distributor tube length. That is you can go slightly below, even with or above the tank top.
- Autotrol valves 268 and 263 can be flush or 1 inch above the tank top. Autotrol 255 must be cut 1 inch above the tank top.
- Fleck valves – with the exception of the 3900 with flange adapter, Fleck valves are usually cut flush with the top of the tank.
Hub & Lateral Systems
For equipment incorporating tank sizes above 14” a hub and lateral design distribution system is used. Hub and laterals are available in PVC, ABS, Polyproylene and Stainless Steel.
Valve size dictates the size of the distributor which in turn dictates the size of the hub. Laterals for filters and ion exchange systems differ in slot size. Filter media type and backwash rates vary and generally require a slightly larger slot opening from ion exchange resin. Ion exchange laterals usually have .010” slots whereas filter laterals slots are .020”.
Performance of large commercial and industrial systems is impacted by distribution design. Please contact Urbans Aqua for more information about standard and custom distribution systems.
- Distributor Assembly Instructions Top Stack Diffuser System-6-8-5822
- Distributor Assembly Instructions Bottom Mount Hub-Lateral System-6-8-straight-thread-ch5821