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

1. Install at the main water inlet after the water meter.
2. Choose horizontal or vertical orientation based on space and service access.
3. Allow clearance for backwash operation and drain routing.
4. Run a first backwash after commissioning to clear installation debris.
5. Backwash every 6 months (or more often in high-sediment areas).

Technical Data

*RSF = Backwash filter.