- Qingqingquan
- Shandong
- 20 days
- 300 units per month
Professional RO solenoid valves for water treatment systems. 300 PSI rating, NSF certified, <100ms response. Download free technical specifications today!
Ultimate Guide to RO Solenoid Valves - 2025 Edition
Why Solenoid Valves Are Critical for RO Systems
✔ Precise flow control - Ensures optimal membrane performance
✔ Automated operation - Reduces manual intervention by 80%
✔ Emergency shut-off - Protects system from pressure surges
✔ Energy efficient - Consumes <10W during operation
Industry Fact: Proper valve selection can extend RO membrane life by 30%
3 Key Types of RO Solenoid Valves
1. Normally Closed (NC) Valves
• Best for: Feed water control
• Feature: Auto-shuts during power failure
2. Normally Open (NO) Valves
• Best for: Drain line applications
• Feature: Maintains flow during outages
3. Bi-Stable Valves
• Best for: Energy-saving systems
• Feature: Only uses power when switching
Technical Specifications Comparison
| Parameter | Standard Valve | Heavy-Duty Valve |
|---|---|---|
| Pressure Rating | 150 PSI | 300 PSI |
| Temperature Range | 32-140°F | 32-212°F |
| Orifice Size | 1/4"-1" | 1/2"-2" |
| Power Consumption | 8-12W | 10-15W |
| Certifications | NSF/ANSI 61 | NSF/ANSI 372 |
5 Must-Check Features
✅ Material: 316L stainless steel body
✅ Seals: EPDM or PTFE for chemical resistance
✅ Coil Class: IP65 waterproof rating
✅ Response Time: <100ms for quick action
✅ Warranty: Minimum 1-year coverage
Top Applications in Water Treatment
1. RO System Feed Control
• Prevents dry running
• Regulates pretreatment flow
2. Flush Cycle Management
• Automated membrane cleaning
• Programmable timing options
3. Tank Level Control
• Prevents overflows
• Integrates with float switches
4. Chemical Dosing
• Precise antiscalant injection
• Acid/alkali feed control
5. Emergency Shut-off
• Instant system isolation
• Pressure surge protection
Installation & Maintenance
Proper Mounting Guidelines
1. Install after pre-filters
2. Ensure correct flow direction
3. Use thread sealant (never Teflon tape)
4. Allow 5cm clearance for coil servicing
Maintenance Schedule
• Monthly: Check for leaks
• Quarterly: Clean internal screens
• Annually: Replace seals/diaphragms
• As Needed: Test emergency shut-off
Warning: Always depressurize before servicing!
Troubleshooting Common Issues
| Symptom | Likely Cause | Quick Fix |
|---|---|---|
| Won't open | Burned coil | Replace coil |
| Leaks when closed | Worn seal | Replace seal kit |
| Partial flow | Clogged orifice | Clean filter screen |
| Humming sound | Low voltage | Check power supply |
| Slow response | Viscous fluid | Increase coil voltage |
Why Choose Our Solenoid Valves?
✔ RO-Specific Design: Optimized for water treatment
✔ Global Certifications: NSF, WRAS, CE approved
✔ Smart Ready: IoT connectivity options
✔ Warranty: Industry-leading coverage
Case Study: Textile plant reduced valve failures by 90% after switching to our heavy-duty models
