High Pressure Switch for RO Booster Pumps | Auto Tank Shut-Off | Osmotics UK

Safeguard your reverse osmosis booster pump and prevent overflow with this essential high pressure switch from Osmotics. Designed specifically for RO systems with booster pumps, this reliable switch automatically cuts power to the pump once your pressure storage tank reaches full capacity (or when high pressure is detected in open-container setups with a float valve)—ensuring safe, hands-free operation and protecting components from dry-running or over-pressurisation.

Perfect for upgrading or maintaining your Osmotics RO system (e.g., our pumped drinking water units or larger RODI setups for aquariums/window cleaning). It monitors line pressure downstream of the pump and shuts off at the preset threshold (~40–60 PSI typical cut-off, with differential for restart), helping extend pump and membrane life while saving energy by avoiding unnecessary running.

Key Benefits

• Automatic protection — Prevents pump burnout, tank overflow, and potential leaks by stopping the booster when the tank is full.
• Energy efficient — Pump only runs when needed, reducing electricity use and wear—ideal for continuous or high-volume RO production.
• System longevity — Protects booster pump, RO membrane, and fittings from excessive pressure or dry-run damage.
• Simple integration — Easy inline installation on the product water line; works with standard pressure tanks or open containers (pair with our PVC Float Valve for non-pressurised setups).
• Peace of mind — Reliable auto shut-off means no manual monitoring—great for under-sink drinking systems, aquarium top-off reservoirs, or bulk storage.

What's Included

• 1 × High Pressure Switch (with quick-connect fittings, typically 1/4" or compatible)
• Full installation instructions (wiring diagram for booster pump integration)
• Email support from Osmotics for setup questions

Compatibility & Typical Specs

• Designed for standard RO booster pumps (24V DC models used in domestic systems)
• Pressure Settings: Factory-set cut-off ~0.25–0.4 MPa (approx. 40–60 PSI); 
• Fittings: Quick-connect (JG-style, 1/4" common); inline on product water line to storage tank
• Voltage: Low-voltage safe (integrates with pump transformer/relay)
• Compatible with Osmotics booster pump kits, self-regulating pumps, and most third-party RO booster setups
• For open storage tanks: Must pair with a float valve (activates switch via pressure rise when full)

Installation Overview (detailed steps in supplied instructions)

1. Install inline on the product water tubing after the RO membrane (before tank inlet).
2. Wire into the booster pump power circuit (breaks power when high pressure detected).
3. For pressure tanks: Switch senses tank back-pressure directly.
4. For open tanks: Use float valve to close inlet when full, building pressure to trigger switch.
5. Test system after install—flush and monitor for proper shut-off.

Recommended Use

Pair with our Booster Pump Wiring Harness for easier connections.

This compact, great-value accessory is a must-have for any boosted RO system—ensuring safe, efficient, automated performance. In stock with fast UK delivery (next-day options available). Add to your cart alongside a booster pump, float valve, or pressure tank for a complete setup.