24V Low Pressure Switch
SKU: EA-PT-SW-02
Order before 12:00pm AEST
for same-day dispatch from Wyong NSW
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Australia-wide delivery. Shipping is calculated at checkout based on the packed weight and delivery destination.
Free Click & Collect from our Wyong NSW showroom.
Same-day dispatch on orders before 12pm AEST.
In stock · ships from Wyong, NSW
14-day returns on damaged or faulty items - returns policy
Questions? Call (02) 8772 8162 Mon-Thu 9am-3pm · Fri 9am-1pm AEST · Closed weekends
- Voltage
- 24V DC
- Configuration
- Normally open (N/O)
- Connection
- 1/4" quick connect
- Use
- Pump inlet / supply side
Specifications
- Type
- Low-pressure switch
- Voltage
- 24V DC
- Switch configuration
- Normally open (N/O)
- Connection
- 1/4" quick-connect (push-fit tube)
- Mounting position
- Pump inlet, supply side
- Function
- Opens circuit when pressure drops below working level
- Pairs with
- Matching 24V high-pressure switch on outlet
- Included
- 1 × switch (no tube or wire)
A 24V DC low-pressure switch for RO booster pumps - the small but essential control component that prevents the pump from running dry. Sits on the inlet side of the pump, opens the pump's electrical circuit when the supply-side water pressure drops below working level, and closes again when pressure returns.
What This Switch Does
A booster pump pulls water from your mains supply, raises its pressure, and feeds it into the RO membrane. If the mains supply pressure drops too low - a closed isolation valve, a kinked tube, an empty supply tank - the pump would continue running and either burn itself out or damage the membrane through cavitation.
The low-pressure switch is the safety interlock that prevents this:
- Normally-open (N/O) - circuit open by default, switch only closes when pressure is present
- Closes the pump circuit when pressure is above working level - pump runs normally
- Opens the circuit when pressure drops below working level - pump stops, protecting itself and the system
This is paired with a high-pressure switch on the outlet side (sold separately) that performs the opposite function - stopping the pump when the RO permeate tank is full.
Where It Fits
Most residential and small commercial 24V DC RO booster pump installations need both:
- One low-pressure switch (this product) on the pump inlet
- One 24V high-pressure switch on the pump outlet
Together they form the standard pressure-controlled pump cycling that keeps your RO system running automatically without burning out the pump.
Build
- Voltage: 24V DC
- Configuration: Normally-open (N/O)
- Connection: 1/4" quick-connect tube fitting (push-fit)
- Use: Pump inlet, supply-side
What's Included
- 1 × 24V low-pressure switch
Does not include tube, wire, or pump - these are sourced separately or already in your existing pump installation.
Key features
- 24V DC low-pressure switch for RO booster pumps
- Normally-open (N/O) configuration
- 1/4" quick-connect push-fit tube fitting
- Stops pump when supply pressure drops below working level
- Prevents dry-running damage to pump and membrane
- Standard component in DengYuan-style 24V RO pump setups
Recommended for
- 24V DC RO booster pump installations needing safety interlocks
- Replacement of an aged or failed low-pressure switch
- Commercial RO installations with automatic pump cycling
- DIY RO system builds where pump protection is being added
Ready to order?
Order before 12:00pm AEST on a business day for same-day dispatch from Wyong NSW. See shipping details.
Frequently bought together
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24V High Pressure Switch
$19.95 AUD
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Australian-owned
Real Wyong NSW warehouse and showroom, with local product support.
Compatibility made clear
Connections, dimensions, finishes and installation requirements are listed before purchase.
Compliance details
WaterMark and WELS information is shown where it applies to the specific product.
24V Low Pressure Switch
$19.95 AUD