RO Pressure Switch 1/4" 3/8" Hose – NC/NO for RO Systems
RO Pressure Switch 1/4" 3/8" Hose – NC/NO for RO Systems
Details
RO Water Tank Pressure Switch for Reverse Osmosis Systems
Keep your reverse osmosis system running at peak efficiency with this reliable high/low pressure switch. Designed for RO water tanks, water dispensers, and pump motors, this pressure switch automatically monitors and controls water pressure to protect your system — shutting the pump on or off as needed. Available in both Normally Closed (NC) and Normally Open (NO) configurations, it fits standard 1/4" and 3/8" OD tubing for quick, tool-free push-to-connect installation.
Key Features
- Dual Compatibility: Fits 1/4" (6.35 mm) and 3/8" (9.53 mm) OD tubing — suitable for most residential and light commercial RO setups
- High/Low Pressure Control: Available as Normally Closed (NC) or Normally Open (NO) to match your system's requirements
- Max Pressure Rating: <850 kPa — safely handles typical RO tank operating pressures
- Durable POM Construction: Made from high-quality Polyoxymethylene (POM) plastic — strong, chemical-resistant, and built for long-term water contact
- Square Head Design: Easy to grip and secure with a square head code for stable pipe connections
- Push-to-Connect Pipe Fitting: Bushing-style connection for fast, leak-resistant installation — no tools required
- Compact & Lightweight: Minimalist design fits neatly within tight RO system enclosures
- Available Colors: White or Blue
Specifications
| Material | POM (Polyoxymethylene) |
| Hose OD Compatibility | 1/4" (6.35 mm) & 3/8" (9.53 mm) |
| Hose Inner Diameter | 4 mm |
| Switch Type | Pressure Switch (NC / NO) |
| Max Pressure | <850 kPa |
| Connection Type | Pipe Connection (Bushing) |
| Head Code | Square |
| Colors | White, Blue |
| Package Contents | 1 x Pressure Water Valve |
| Country of Origin | Made in Mainland China |
What Is a Pressure Switch?
A pressure switch in an RO system monitors the water pressure in the storage tank. When the tank reaches full pressure, a Normally Closed (NC) switch opens the circuit to shut off the pump. A Normally Open (NO) switch does the reverse — it closes the circuit to activate the pump when pressure drops. Choosing the correct type ensures your pump motor operates only when needed, preventing over-pressurization and extending the life of your system.
Great For
- Reverse Osmosis (RO) water filtration systems
- Water dispensers and purifiers
- RO pump motor control
- Home and office water treatment setups
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Frequently Asked Questions
Q: What is the difference between a Normally Closed (NC) and Normally Open (NO) pressure switch for an RO system?
A: A Normally Closed (NC) pressure switch keeps the circuit closed (pump running) until the target pressure is reached, then opens it to stop the pump. A Normally Open (NO) switch keeps the circuit open (pump off) until pressure drops below the set point, then closes to start the pump. Most standard RO systems use an NC high-pressure switch on the tank to shut off the pump when the tank is full.
Q: Will this pressure switch fit my existing RO tubing?
A: Yes — this pressure switch is compatible with both 1/4" OD (6.35 mm) and 3/8" OD (9.53 mm) standard RO tubing used in most residential reverse osmosis systems. Simply push the tubing into the fitting for a secure, leak-resistant connection.
Q: What is the maximum pressure this switch can handle?
A: This RO pressure switch is rated for pressures up to 850 kPa, which comfortably covers the operating range of most household RO water tank systems.
Q: Is this switch suitable for both high-pressure and low-pressure applications in an RO system?
A: Yes. This switch is designed for both high-pressure and low-pressure monitoring roles in reverse osmosis systems. Be sure to select the correct switch type (NC or NO) based on where in your system it will be installed — high-pressure tank shutoff or low-pressure inlet protection.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.
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