Pressure Tank | Stainless Steel Vertical | 8L & 18L Options
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Durable 304 stainless steel pressure tanks for domestic water supply, coastal properties and marine applications.
The PT Series stainless steel vertical pressure tanks combine reliable pressure storage with the corrosion resistance of high-quality 304 stainless steel.
Available in 8L and 18L capacities, these compact tanks help reduce frequent pump starts, support smoother water delivery and provide stored water under pressure.
Each tank features a single-diaphragm design with a high-grade butyl rubber membrane, separating the water from the pressurised air. The stainless steel water connection and polished exterior make these tanks particularly suitable for installations where corrosion resistance is important.
Ideal for domestic pressure systems, water boosting, coastal properties and marine applications.
Features
- High-quality 304 stainless steel construction
- Polished, corrosion-resistant exterior
- High-grade butyl rubber diaphragm
- Stainless steel water connection
- Suitable for potable-water applications
- Compact vertical configuration
- Designed to reduce frequent pump cycling
- Sealed air valve with protective cap
- Suitable for domestic, coastal and marine applications
- 5-year manufacturer's tank replacement guarantee
Specifications
| Specification | PT8SS | PT18SS |
|---|---|---|
| Capacity | 8L | 18L |
| Configuration | Vertical | Vertical |
| Exterior material | 304 stainless steel | 304 stainless steel |
| Diaphragm | Butyl rubber | Butyl rubber |
| Water connection | 1" NPT/BSP | ¾"–1" NPT/BSP with adapter |
| Dimensions | 203 × 281mm | 275 × 362mm |
| Weight | 2.3kg | 3.7kg |
| Quoted drawdown | Approx. 2.9L | Approx. 7.2L |
| Guarantee | 5 years | 5 years |
Actual usable drawdown depends on the system's operating pressure settings and tank pre-charge.
Frequently Asked Questions
Why choose stainless steel over a standard painted pressure tank?
Stainless steel provides additional corrosion resistance, making it a useful option for coastal environments, marine applications and installations exposed to moisture.
Does a pressure tank increase water pressure?
Not by itself. It stores water under pressure and helps reduce frequent pump starts. The pump and pressure-control settings determine operating pressure.
Which size should I choose?
The 8L model is suitable for compact installations requiring a smaller storage volume. The 18L provides greater usable drawdown between pump starts. Correct sizing depends on your pump and pressure settings.
Can these tanks be used for drinking water?
Yes. The manufacturer specifies a food-grade butyl diaphragm suitable for potable-water applications.
Do the tanks require maintenance?
Periodic inspection of the tank and associated pressure system is recommended. Check for leaks, corrosion, physical damage or unusual pump cycling.
What guarantee is included?
Both tanks carry a 5-year manufacturer's limited tank replacement guarantee against manufacturing defects, subject to supplier terms.
Correct installation, suitable pre-charge settings and appropriate overpressure protection are essential.
View the manufacturer's installation and warranty instructions.
Need help choosing the right pressure tank? Contact us for straightforward advice.