20NB TMF REGULAR ( RUNXIN )
20NB TMF Regular valve is a manual multiport control valve used in water filtration and softening systems.
Description
Specifications
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SPECIFICATION FOR AUTO VALVE
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| Product Code | 2644 |
| BRAND | RUNXIN |
| MODEL | 53502 |
| SIZE | 20 NB |
| TYPE | Time by hours/day or Triggered by PLC – 53502 |
| MOUNTING | TOP MOUNT FILTER |
| OPERATION | AUTO |
| PIPE SIZE | 3/4″M |
| MAXIMUM FLOW CAPACITY | 2000LPH |
| SIZE OF BASE | 2.5″ |
| DISPLAY SIZE | 60mm |
| SIGNAL OUTPUT RELAY | 2 |
| INFORMATION | R SERIES AUTOMATIC FILTER VALVE FOR RO SYSTEM – Time by hours/day or Triggered by PLC |
| PACKING LIST | Control valve -1 no, Transformer (DC12V) -1 no, Top & Bottom Strainer -1no, User Manual -1no |
| USED IN | INDUSTRIAL RO SYSTEM |
| Country of Origin | CHINA |
20NB TMF Regular (Runxin) Valve – Overview
Product Name: 20NB TMF Regular Multiport Valve
Brand: Runxin (Chinese water-treatment valve manufacturer)
What It Is
The 20NB TMF Regular valve is a manual multiport control valve used in water filtration and softening systems. It allows the user to switch between different flow modes such as Service (normal operation), Backwash, Rinse, and Waste — all by turning the handle. Such valves are essential in sand filters, carbon filters, and water softeners to direct water flow through the correct pathways during various stages of the treatment process.
Key Specifications
| Feature | Typical Value / Description |
|---|---|
| Nominal Size | 20NB (≈ 3/4″ – 1″ connection) |
| Model Type | TMF Regular (Manual multiport valve) |
| Material | Durable plastics with corrosion-resistant internals (common for Runxin valves) |
| Operation Mode | Manual handle – rotate to select positions |
| Functions/Ports | Service / Backwash / Rinse / Waste / Closed / Bypass (depending on configuration) |
| Typical Water Pressure Range | ~0.1–0.6 MPa (standard for manual valves) |
| Water Temp Range | ~5–50 °C (common range for filter valves) |
| Application | Water filtration, softening & pre-RO systems |
Note: “NB” stands for Nominal Bore — 20NB indicates the valve’s nominal pipe diameter, roughly equivalent to ~3/4–1 inch.
Main Functions
This valve lets you manually select how water flows through a filter or softener:
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Service — normal water filtration/softening.
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Backwash — reverses flow to clean the filter media.
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Rinse — flushes and settles media after backwash.
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Waste/Drain — directs flow out of system for draining.
Such multiport control makes maintenance and regeneration efficient without disassembly.
Features & Benefits
✔ Manual control – simple, cost-effective operation without electronics.
✔ Multiple flow positions – easily change water paths for various maintenance modes.
✔ Robust build – designed for corrosion resistance and long life in water systems.
✔ Versatile use – suitable for sand filters, carbon filters, softeners, and pre-RO treatments.
Typical Use Cases
🔹 Household/Commercial water filtration systems
🔹 Industrial pre-RO water treatment
🔹 Water softener systems
🔹 Sand & activated carbon filters
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