- Qingqingquan
- Shandong
- 20 days
- 300 units per month
Professional RO PP filters remove 95% of sediment. NSF certified, 1-100 micron options. Learn how to choose, install & maintain. Free technical specs!
The Ultimate Guide to RO PP Filters (2025 Edition)
Why PP Filters Are Essential for RO Systems
✔ First line of defense - Remove 95% of sediment/dirt
✔ Protect RO membranes - Prevent premature clogging
✔ Cost-effective - Save 30-50% on membrane replacements
✔ Easy maintenance - No chemicals needed
Industry Fact: Proper PP filtration extends RO membrane life by 2-3 years (WQA Report)
3 Types of PP Filters Compared
1. String-Wound Filters
• Pore size: 1-100 microns
• Best for: High sediment loads
• Lifespan: 3-6 months
2. Melt-Blown Filters
• Pore size: 1-50 microns
• Advantage: Gradient density
• Ideal: Municipal water pretreatment
3. Pleated Filters
• Pore size: 1-20 microns
• Feature: Larger surface area
• Use: Low-pressure systems
Key Specifications
| Parameter | Standard | Premium |
|---|---|---|
| Micron Rating | 5μm | 1μm |
| Flow Rate | 2-5 GPM | 5-10 GPM |
| Max Pressure | 125 PSI | 150 PSI |
| Temperature | 40-100°F | 33-140°F |
| Certifications | NSF 42 | NSF 53 |
5 Signs You Need to Replace Your PP Filter
⚠️ Pressure drop >15 PSI
⚠️ Reduced water flow
⚠️ Visible discoloration
⚠️ TDS increase >10%
⚠️ Exceeding 6 months use
Pro Tip: Always keep spare cartridges for quick replacement
Installation Guide
Step-by-Step Replacement
1. Shut off water supply
2. Release pressure (open faucet)
3. Remove housing with wrench
4. Insert new cartridge (flow direction ↓)
5. Hand-tighten housing
Warning: Never use lubricants on O-rings
Industry Applications
1. Residential RO Systems
• Standard: 10" 5μm filters
• Replacement: Every 6 months
2. Commercial Water Treatment
• Big Blue 20" housings
• Dual-stage filtration
3. Industrial Pretreatment
• 40" jumbo cartridges
• Automatic backwash systems
Maintenance Schedule
✅ Monthly: Check pressure differential
✅ Quarterly: Sanitize housing
✅ Biannually: Full replacement
✅ Annually: Housing inspection
Cost-Saver: Bulk purchases save 20-30%
