Manual Multiport Valve 4 Inch (Runxin N56D1) – Complete Set with Strainer for Sand, Carbon & Iron Removal Filtration
The Manual Multiport Valve 4 Inch is a genuine Runxin N56D1 control valve, sold as a complete set with its matching 4 inch strainer and riser pipe assembly — so there's nothing else to source separately. It's the head valve that sits on top of your FRP filter tank and controls how water moves through the media bed, switching between filtering, backwashing, and rinsing with a simple turn of the handwheel.
This is a manual multiport valve, not an automatic softener valve. It doesn't have a brine/salt draw port, so it isn't designed for automatic resin regeneration. What it does extremely well is manage sand, carbon, and multi-media filtration, which makes it one of the most commonly used valves for RO plant pretreatment — protecting membranes and downstream equipment from sediment, chlorine, and dissolved iron or manganese before water reaches the softener or RO stage.
Fits Any 4 Inch FRP Tank or Vessel
The valve's mounting base is a standard 4 inch (4"-8UN) thread, so it fits any FRP pressure vessel with a matching 4 inch mouth opening — regardless of the tank's brand, height, or overall diameter. This makes it a practical, drop-in replacement or new installation option across the wide range of 4"-neck FRP tanks already in use on commercial sites across Pakistan.
Why Water Treatment Businesses Across Pakistan Choose This Manual Multiport Valve 4 Inch Kit
Commercial water sources across Pakistan — borewells, municipal supply, and tube wells alike — often carry high turbidity and elevated iron or manganese content that can foul RO membranes and damage pumps if left untreated. Whether you're setting up a plant in Multan, Lahore, Karachi, or a smaller city, this complete kit gives you everything needed to run a sand or carbon pretreatment filter ahead of your main RO or softening system, without the added cost and complexity of automatic controls, and without needing to separately source a matching strainer.
Key Features
- Complete Set — Valve, 4" strainer, and riser pipe assembly included, ready to install on any 4 inch FRP tank.
- 3-Way Manual Operation — Service, Backwash, and Fast Rinse positions, switched by hand without shutting off the pump.
- Universal 4 Inch Mounting Base (4"-8UN) — Fits any FRP tank/vessel with a matching 4 inch mouth opening.
- 2 Inch Inlet/Outlet/Drain (2"F) — Sized for commercial-scale flow, up to 10m³/h.
- Ceramic Disc Valve Core — Corrosion-resistant, leak-resistant, rated to operate under pressure.
- Multi-Media Ready — Compatible with quartz sand, activated carbon, and manganese sand.
- CE & RoHS Certified — Manufactured by Wenzhou Runxin Manufacturing Machine Co., Ltd, an internationally established water treatment valve maker.
Applications
- Commercial RO Plant Pretreatment — Removes sediment, chlorine, and organics before water reaches the RO membrane, extending membrane life.
- Sand & Multi-Media Filtration — For turbidity, dirt, and suspended solids removal.
- Iron & Manganese Removal — Suited to borewell and tube well water with elevated iron or manganese content, common in parts of Punjab and Sindh.
- Any 4-Inch-Neck FRP Vessel — Works across softener, sand filter, or carbon filter tanks that share the standard 4 inch mouth opening.
- Institutions & Businesses — Schools, hospitals, restaurants, hotels, and factories needing a reliable pretreatment stage ahead of RO or softening systems.
Why Axtron?
Axtron Pakistan has supplied water filtration and RO plant components since 2005, with offices in Lahore, Multan, and Bahawalpur and a network of 500+ retailers nationwide. Every kit we sell — including this Runxin N56D1 valve with its matching strainer — is sourced as a genuine, certified, complete set, so you're not left hunting for a compatible strainer separately.
Conclusion
If you're setting up or upgrading a commercial RO plant, sand filter, or pretreatment stage anywhere in Pakistan, the Manual Multiport Valve 4 Inch (N56D1) gives you a complete, CE-certified kit at a fair all-inclusive price — with the flow capacity, pressure rating, and universal 4" fit to match real commercial demand.
8. Full Technical Specification Chart
| Parameter | Metric (Manufacturer Spec) | Local/Imperial Equivalent |
|---|---|---|
| Model | Runxin N56D1 (Article No. 51110) | — |
| Handle material | Metal/plastic | — |
| Mount type | Top mount / side mount | — |
| Inlet/Outlet | 2" F | ≈ 50.8mm female thread |
| Drain | 2" F | ≈ 50.8mm female thread |
| Mounting base | 4"-8UN | ≈ 101.6mm thread (4" nominal, confirmed by 104.6mm O-ring) |
| Mounting compatibility | Any FRP tank/vessel with a 4" mouth opening | Not limited to a single tank brand |
| Riser pipe (included) | 1.5" D-GB | ≈ 38mm diameter |
| Flow rate | 10 m³/h | ≈ 10,000 L/h ≈ 44 US GPM |
| Manufacturer-recommended tank size for rated flow | 10"–24" diameter | 254mm–610mm |
| Water pressure | 0.15–0.6 MPa | 1.5–6 bar ≈ 22–87 psi |
| Water temperature | 5–50°C | 41–122°F |
| Max. inlet turbidity | <20 FTU | ≈ <20 NTU |
| Filter media | Quartz sand, activated carbon, manganese sand | — |
| Functions | Service / Backwash / Fast Rinse (3-way manual) | — |
| Certifications | CE, RoHS | — |
| Manufacturer | Wenzhou Runxin Manufacturing Machine Co., Ltd | Wenzhou, Zhejiang, China |
| Price (complete set) | ₨25,000 | Includes valve + strainer + fittings |
Note on compatibility: the 10"–24" tank diameter figure is the manufacturer's recommended range for the valve's rated 10m³/h flow performance. Physical fitment only requires a matching 4" mouth opening, so the valve mounts on any 4"-neck FRP tank regardless of diameter — larger or smaller tanks will simply see a proportionally different real-world flow/backwash rate.
9. What's in the Box (Complete Set)
| Item | Quantity | Reference Code |
|---|---|---|
| Manual Multiport Control Valve (N56D1) | 1 | — |
| 4 Inch Strainer & Riser Pipe Assembly | 1 set | — |
| Instruction Manual | 1 | 0466023 |
| Certificate of Conformity | 1 | — |
| O-Ring (104.6 × 5.7mm) | 1 | 8378146 |
| Connector / Lock Ring | 1 | 8458018 |
| Self-Tapping Screws (ST3.9×19mm) | 5 | 8909003 |
Everything above is included in the ₨25,000 price — no separate strainer purchase needed.
10. Features → Benefits Chart
| Feature | Benefit to the Customer |
|---|---|
| Complete kit (valve + strainer) | One purchase, one price — no hunting for a compatible strainer separately |
| Universal 4" mounting base | Works across different FRP tank brands and setups already on site |
| 3-way manual handwheel | Simple operation — no electricity or programming needed |
| Ceramic disc valve core | Long working life, resists corrosion and leaks even under continuous commercial use |
| 4" mounting base, 2" ports | Handles higher flow than domestic-size valves, suited to commercial and industrial tanks |
| CE & RoHS certified | Meets recognized international safety and material standards |
| Works under system pressure | No need to depressurize the line before switching cycles, saves time during backwash |
| Multi-media compatible | One valve works across sand, carbon, or manganese sand filter setups |
11. This Manual Multiport Valve 4 Inch vs. Axtron's Automatic Softener Valve — Quick Comparison
| Axtron Manual Multiport Filter Valve 4 Inch (N56D1) | Axtron 3-Way Softener Valve 1 Inch Auto | |
|---|---|---|
| Operation | Manual (handwheel) | Automatic (timer-based) |
| Brine/regeneration port | No | Yes |
| Strainer included | Yes | Yes |
| Best for | Sand, carbon & iron/manganese removal filtration, RO pretreatment | Resin-based water softening (hardness removal) |
| Port size | 2" | 1" |
| Mounting | Universal 4" mouth FRP tanks/vessels | 1" system |
| Typical placement | Ahead of a softener or RO system | On the softener resin tank itself |
| Price | ₨25,000 (complete set) | ₨30,000 |
12. Delivery & Service Coverage
| City | Coverage |
|---|---|
| Multan | Axtron office (Near Lakar Mandi Chowk, Railway Road) |
| Lahore | Axtron office (91-A Feroz Pur Road) |
| Bahawalpur | Axtron office (Opp. Sadiq Public School, Ahmad Pur East Road) |
| Karachi, Islamabad, Rawalpindi, Faisalabad | Nationwide delivery (no physical branch) |
13. FAQs
Q1: Is the strainer included, or sold separately?
A1: Included. The ₨25,000 price covers the valve, the matching 4 inch strainer and riser pipe assembly, O-ring, connector, and mounting screws — it's a complete, ready-to-install set.
Q2: Will this valve fit my existing FRP tank?
A2: Yes, as long as your tank has a standard 4 inch (4"-8UN) mouth opening. It isn't limited to one tank brand — it fits any FRP vessel with a matching 4" neck.
Q3: Is this a softener valve or a filter valve?
A3: It's a manual multiport filter valve (Service/Backwash/Fast Rinse). It doesn't have a brine port for automatic resin regeneration, so it's built for sand, carbon, and multi-media filtration — commonly used ahead of a softener or RO system, not as the softener itself.
Q4: What's the maximum flow rate and pressure rating?
A4: Up to 10m³/h (10,000 LPH), rated for 1.5–6 bar (approx. 22–87 psi) working pressure and 5–50°C water temperature. This flow rate is optimized for 10"–24" diameter tanks; other sizes will see a proportionally different flow.
Q5: Can this valve be used for RO plant pretreatment in Pakistan?
A5: Yes — it's one of the most common valves used for sand/carbon pretreatment tanks feeding commercial RO plants, protecting membranes from sediment, chlorine, and iron/manganese.
Q6: Do you deliver this valve across Pakistan?
A6: Yes — Axtron delivers nationwide, including Karachi, Lahore, Islamabad, Rawalpindi, Faisalabad, and Multan, with physical offices in Lahore, Multan, and Bahawalpur.