Sprinkler & Wet Riser Tank Size calculator
Enter your inlet size and tank dimensions to get an indicative effective capacity for a dedicated fire water storage tank. Tank dimensions are typically built up in 0.5m panel increments.
STEP 1
SELECT YOUR INLET SIZE
STEP 2
ENTER YOUR TANK SIZE IN METRES
STEP 3
CALCULATE
Sprinkler & Wet Riser
TANK SIZE CALCULATOR
This Tank Size Calculator tool has been developed to assist in sizing an accurate size for your Sprinkler or Wet Riser Tank. This will help you achieve your effective capacity design requirement. The calculator is based on typical effective capacities for a Hot Press IFB Sectional Tank c/w float valve housing, vortex inhibitor and up elbow overflow arrangement.
Please note for length, width & height, GRP water tank panels increase in mulitples of 0.5.
For different inlet sizes, not found in our selection, please provide us with your contact details and our Technical Sales Team will get in touch to discuss the most cost effective solution.
Sprinkler and Wet Riser
Tank Size Calculator
Results
Typical Effective Capacities for Internally Flanged Base Tank c/w float valve housing, vortex inhibitor and up elbow overflow arrangement:
How It Works
What this calculator is doing
01
You enter tank dimensions
Length, width, and height in metres, plus your inlet size, based on a typical hot-press sectional tank build.
02
Estimate effective capacity
Gross volume is adjusted for typical fittings – float valve housing, vortex inhibitor, and overflow arrangement – to give a usable figure.
03
You confirm with our team
Fire water storage requirements are project-specific. Send us your result and we’ll confirm the right tank for your system.
CERTIFICATION
Fully Certified LPCB Sprinkler Tank Manufacturer
Tricel Weston’s Sprinkler Tanks are LPCB Approved which guarantees that they have undergone rigorous testing and assessment by the Loss Prevention Certification Board (LPCB). This approval signifies that our sprinkler tanks meet and exceed the highest standards in fire safety and performance.
At Tricel Weston we aim to operate at consistently high professional standards, and provide the industry with market leading GRP water storage solutions. We constantly update our manufacturing processes to meet current legislation and regulation changes. This ensures that our products remain of the highest quality and inline with our customer needs. Procurement and usage of raw materials is consistently monitored, whilst simultaneously adopting efficient production methods – using natural resources wherever possible.
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Common Questions
FAQs
What does this calculator estimate?
It gives an indicative effective capacity for a sprinkler or wet riser tank based on tank dimensions and inlet size. It’s a guide for early design – the exact storage volume for any fire protection project should be confirmed with Tricel’s technical team.
Why does tank size increase in 0.5m steps?
GRP sectional tank panels are manufactured in standard 0.5m increments, so tank dimensions are typically built up in those steps rather than arbitrary measurements.
What is effective capacity?
Effective capacity is the usable water volume available to the sprinkler system once fittings such as the float valve housing, vortex inhibitor, and overflow arrangement are accounted for – it’s lower than the tank’s gross volume.
SPEAK WITH US DIRECTLY
Need your fire water storage confirmed?
Send your result to our technical sales team – they’ll confirm the correct tank and inlet arrangement for your system, free of charge.
This calculator is a guide, not a specification. Fire water storage is project-specific. Contact Tricel’s technical team to confirm the exact volume required for your system. © 2026 Tricel Water. All rights reserved.
