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Accumulator Tank
Accumulator Tank
SKU:CVB-TREK-ACCUM-T
In stock
BUNDLE & SAVE
Accumulator Tank
📝 Accumulator Tank – Pressure Stabilising Water System Upgrade
The Accumulator Tank is a bladder-type pressure storage vessel designed to smooth out your water system, reduce pump cycling, and eliminate pulsation. By holding water under pressure, it improves flow consistency, reduces pump noise, minimises amperage draw, and extends pump life. Featuring two screw mounting points with rubber grommets, it delivers excellent vibration resistance for a quieter, more efficient setup.
⭐ Essential Benefits
• Smoother water flow – reduces pulsation for consistent pressure at the tap.
• Longer pump life – minimises rapid cycling and wear on the pump.
• Lower amperage draw – improves overall system efficiency.
• Noise reduction – dampens vibration and pump hammering sounds.
• Simple installation – compact design fits easily into carava n and camper plumbing layouts.
⚙️ How It Works
The accumulator uses an internal bladder that stores water under pressure. As you open a tap, water is released from the tank before the pump activates, reducing on/off cycling and stabilising flow. Before installation, the bladder’s pre-charge pressure is set slightly below your water pump’s output pressure to ensure proper performance.
🔌 Compatibility
• Suitable for 12v caravan, campervan, RV, and marine water systems
• Works with diaphragm-style water pumps
• 1/2" BSP female fittings for simple inline connection
• Ideal for both new installations and upgrades to existing plumbing
🧰 Installation Difficulty
🟢 Easy (2/5)
Mount using the two anti-vibration screw points, adjust pre-charge pressure, and connect using standard 1/2" BSP fittings.
🔍 Features
• Bladder-type storage – maintains stable pressure and smooth output.
• Anti-vibration mounts – rubber grommets reduce noise transmission.
• High working pressure – rated up to 125 psi (8.6 bar).
• Compact size – easy to position in tight service spaces.
📊 Specifications
| Specification | Value |
|---|---|
| Approx Diameter | 85MM |
| Approx Length | 210MM |
| Max Working Pressure | 125 psi (8.6 bar) |
| Pre-Charge Pressure | 10 psi (0.7 bar) |
| Recommended Adjustment | 3 psi (0.2 bar) below pump output |
| Volume | 0.75L (25 fl oz) |
| Fittings | 2 × 1/2" Female BSP |
📦 What’s Included
• 1x Accumulator Tank
• 2x 1/2" BSP Barb Fittings
🙌 Why Choose This Product?
This accumulator tank transforms your water system by delivering smoother flow, reduced noise, and improved pump reliability. Whether you’re building a full caravan plumbing setup or upgrading an existing system, it ensures quieter operation and better performance every time you turn on the tap.
🚀 Our Promise
Order today for same-day dispatch and explore our full range of off-grid accessories.

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Tested for Reliability
All products are tested in real Aussie off-grid conditions before we stock them.
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Fast Dispatch
Order before 3 PM AEST for same-day shipping from Geelong, VIC.
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Quality Over Price
We only stock products we’d use ourselves—even if they cost a bit more.
Our Commitment
At Campervan Builders, our commitment is simple: we only supply quality campervan, caravan, motorhome, and RV parts that we’ve personally tested in real off-grid conditions. From interior LED lighting to Starlink 12V conversion kits, every product is chosen for reliability, durability, and ease of installation. We back this with fast shipping Australia-wide, friendly support, and honest advice to help DIY builders and professionals alike. When you shop with us, you’re choosing proven gear that keeps you connected and comfortable on every adventure.


















