Lech Series Pre-Filter

The MENRED Lech Series Whole-House Pre-Filter is a high-performance first-stage water treatment solution designed for modern residential plumbing. Combining a 2.5 m³/h high-flow capacity, adjustable 5–40 μm PP sediment filtration, a reinforced pressure-resistant housing, and a ceramic sealing structure with three-position control valve, the Lech Series effectively captures rust, sand, sediment, and pipe scale — delivering cleaner, clearer water to every tap and appliance throughout the home.

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Designed specifically for whole-home applications, the MENRED Lech Series integrates seamlessly with kitchen plumbing, utility rooms, equipment spaces, and upstream of water softeners and central purification systems, making it ideal for apartments, villas, and whole-house water treatment setups.

Dependable First-Stage Protection for Your Entire Home

Installed at the household water inlet, the Lech Series provides an essential first line of defense against common pipe-borne impurities. By intercepting rust, sand, sediment, and pipe scale before they travel through the plumbing system, it helps protect faucets, appliances, and downstream water treatment equipment — supporting cleaner water delivery and longer equipment service life.

High-Flow Performance for Comfortable Whole-Home Use

Designed for modern residential water demands, the Lech Series delivers steady water flow to multiple household outlets. From showers and bathtubs to washing machines, dishwashers, and kitchen sinks, it helps maintain a comfortable water supply even when several points are used at the same time.

Flexible Filtration for Different Water Conditions

Different homes face different water quality challenges. The Lech Series offers selectable filtration precision, allowing homeowners and installers to choose the appropriate level of sediment protection based on local water conditions and the requirements of downstream equipment.

Convenient Control for Easier Everyday Maintenance

Designed with practical household maintenance in mind, the Lech Series makes filter servicing easier and more manageable. Its intuitive control design allows users to switch between normal filtration, water shut-off, and bypass operation according to their needs.

Built for Long-Term Residential Reliability

From its reinforced housing to its durable internal components, the Lech Series is engineered to withstand the demands of everyday household water systems. The result is a dependable filtration solution designed for stable operation, convenient maintenance, and long-term protection of the home's plumbing infrastructure.

Core Technologies & Engineering

The Lech Series brings together three proven engineering solutions to achieve consistent, dependable, sturdy & user-friendly residential water filtration.

1. Ceramic Sealing Structure for Stable Operation
The specially designed ceramic sealing component forms a durable, wear-resistant interface inside the control assembly, ensuring reliable operation, reducing wear during valve adjustment, and maintaining consistent sealing performance over years of repeated use.

2. Three Operating Modes: Run, Shut-Off and Bypass
The integrated three-position valve offers intuitive control for any situation:
- Run: Water flows through the filter cartridge for standard operation.
- Shut-Off: Water flow through the unit is completely stopped for safe servicing.
- Bypass: Water passes through the system without filtration, allowing for cartridge maintenance or replacement without completely interrupting household water use (subject to installation layout).

3. Reinforced Filter Housing for Structural Stability
Engineered with 12 reinforced structural ribs, the housing is rated for a burst pressure of up to 2.8 MPa and has successfully passed 100,000 water-hammer fatigue cycles, ensuring reliable performance even in demanding water pressure environments.

4. Practical Maintenance-Oriented Details
Several external details are designed to make installation and servicing more intuitive. Molded outlet markings help installers identify water-flow direction quickly, while the one-touch pressure-release button facilitates pressure relief before filter servicing.

Superior Pre-Filtration Performance

- Continuous Flow Rate: Up to 2.5 m³/h, supporting multiple water points simultaneously under suitable inlet-water conditions.
- Filtration Precision: Adjustable from 5 to 40 μm with a PP sediment cartridge, selectable based on local water quality and downstream equipment needs.
- Rated Filtered-Water Capacity: 60 m³ (actual cartridge life depends on inlet-water quality, selected filtration precision, and household water consumption).
- Burst Pressure: Rated up to 2.8 MPa.
- Durability Validation: Successfully passed 100,000 water-hammer fatigue cycles under stated test conditions.

Versatile Installation for Various Spaces

The Lech Series pre-filter's compact and practical design makes it suitable for a range of installation environments without compromising functionality or aesthetics.

Kitchen — Provides convenient point-of-entry filtration at the main water source for cooking and drinking.
Laundry Room — Delivers filtered water to washing machines, protecting them from sediment accumulation.
Bathroom — Supplies clean water to showers, bathtubs, and washbasins for a better bathing experience.
Utility Rooms & Equipment Rooms — Keeps filtration equipment centralized in dedicated service or mechanical spaces with easy access for maintenance.

Upstream of Water Softeners & Central Purification Systems — Extends the service life of downstream treatment equipment by removing coarse sediments first.

Installation Notes：Professional installation is recommended. The unit requires an inlet pressure of 0.1–0.4 MPa and sufficient service clearance below the housing. The molded outlet marking helps identify the correct water flow direction, and the pressure-release button safely releases internal pressure before opening.

Technical Specifications

Model	WVCB1.B01
Water Source	Multiple Tap Water
Recommended Inlet Pressure	0.1 – 0.4 MPa
Operating Water Temperature	5 – 38°C
Flitered Water Flow Rate	2.5 m³/h
Rated Filtered-Water Capacity	60 m³
Filtration Precision	5 – 40 μm (Adjustable)
Burst Pressure	Up to 2.8 MPa
Dimensions (W×D×H)	189 × 190 × 420 mm