BWT R1 Backwash Filter 3/4" RSF LF | Lead-Free Whole House Filter 125596638
BWT R1 Backwash Filter 3/4" RSF LF | Lead-Free Whole House Filter 125596638
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Product Description
Product Description
BWT R1 Backwash Filter 3/4" RSF LF | Lead-Free Whole House Filter (No Pressure Reducer)
Part Number (MPN): 125596638
Product Overview
The BWT R1 Series Backwash Filter (R1 RSF LF) is a durable, high-performance whole house water filter designed to protect drinking water pipes and household appliances from rust, sand, and debris. Installed at the main water inlet after the water meter, it helps prevent issues caused by foreign particles such as dripping faucets, sticking valves, and appliance malfunctions.
The R1 uses proven filtration with 2-phase backwash technology for particularly intensive cleaning. Instead of frequent cartridge changes, this filter is designed for manual backwashing (recommended every 6 months) to support consistent, hygienic water quality. This lead-free (LF) model is built without a pressure reducer, making it ideal where pressure control is handled elsewhere.
Features & Benefits
- ✅ Lead-free (LF) backwash filter for potable-water installations
- ✅ 2-phase backwash technology for particularly intensive cleaning
- ✅ Protects plumbing & appliances from rust, sand, and debris
- ✅ Helps reduce nuisance issues like dripping faucets and appliance malfunctions
- ✅ Manual backwash recommended every 6 months for consistent performance
- ✅ Horizontal or vertical installation flexibility
- ✅ Quick installation supported via HydroModul (3/4" to 1-1/4")
- ✅ 10-year warranty with product registration
Specifications
- Brand: BWT
- Series: R1
- Type: RSF Backwash Filter (manual backwash)
- MPN / Order No.: 125596638
- Connection size: 3/4" (DN20)
- Filter mesh size: 90 µm
- Flow @ Δp 0.2 bar (2.9 psi): 3.4 m³/h (14.9 gpm)
- Flow @ Δp 0.5 bar (7.3 psi): 5.4 m³/h (23.8 gpm)
- Operating pressure (min/max): 2.5–16 bar (36.2–232 psi)
- Dimensions (H × W): 352 × 186 mm (13.86 × 7.32 in)
- Installation: Horizontal or vertical
- Material: Lead-free (LF)
Installation Tips
- Install at the main water inlet after the water meter.
- Choose horizontal or vertical orientation based on space and service access.
- Allow clearance for backwash operation and drain routing.
- Run a first backwash after commissioning to clear installation debris.
- Backwash every 6 months (or more often in high-sediment areas).
Technical Data
| R1 RSF* Lead-Free (LF) — No Pressure Reducer | 3/4" | 1" | 1-1/4" |
|---|---|---|---|
| Connection width (DN) | 20 | 25 | 32 |
| Flow rate @ Δp = 0.2 bar (2.9 psi) | 3.4 m³/h (14.9 gpm) | 3.7 m³/h (16.3 gpm) | 4.1 m³/h (18.0 gpm) |
| Flow rate @ Δp = 0.5 bar (7.3 psi) | 5.4 m³/h (23.8 gpm) | 6.0 m³/h (26.4 gpm) | 6.7 m³/h (29.5 gpm) |
| Filter mesh size | 90 µm | ||
| Operating pressure (min./max.) | 2.5–16 bar (36.2–232 psi) | ||
| Dimensions (H × W) | 352 × 186 mm | 352 × 184 mm | 352 × 203 mm |
| Order No. | 125596638 | 125596639 | 125596640 |
*RSF = Backwash filter.
Free Shipping From $120.00
Free Shipping From $120.00
Orders over $120.00 have free delivery, unless otherwise stated in the checkout. Delivery will be made within 3 - 4 business days after sending the order confirmation.
30 Days Free Return Policy
30 Days Free Return Policy
We want you to be completely satisfied with the purchase of your BWT product. If you are not, we will refund the full purchase price.
Please use the contact form to let us know the reason for your dissatisfaction and your contact details. We will then inform you as quickly as possible about the further process and how you can return your product to us free of charge.
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
FAQs
Q: What is a backwash filter, and what does it do?
Q: What is a backwash filter, and what does it do?
Q: Does this model include a pressure reducer?
Q: Does this model include a pressure reducer?
Q: How often should I backwash the filter?
Q: How often should I backwash the filter?
Q: Where should it be installed?
Q: Where should it be installed?
Q: What replacement parts are available?
Q: What replacement parts are available?
Technical Downloads
Specification Submittal
Specification Submittal
No Download Currently Available
Installation & Maintenance Instructions
Installation & Maintenance Instructions
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