Vertical Pre-filter

Tap water is not pure. It carries particles invisible to the naked eye-sand from aging mains, rust from corroded pipes, scale from water heaters. These particles pass through faucets, showers, and appliances every day.

Over time, they accumulate:

The solution is simple: A 40‑micron strainer at the main water entry point. It captures particles down to 40 microns (0.04mm)-visible to the naked eye as tiny specks-before they can enter the household plumbing system.

This is the role of the inline Y‑strainer: a passive, maintenance‑free barrier that protects everything downstream.

Our DN25 vertical pre‑filter is a robust in‑line sediment filtration unit engineered for whole‑house residential water networks as well as light‑duty commercial HVAC circulating water circuits.

Fabricated from robust cast brass, this integrated T‑style component combines three core capabilities within a single body: capturing solid particulate contaminants, maintaining consistent fluid flow, and enabling straightforward bottom‑end flush cleaning. Fitted with a cylindrical 304 stainless‑steel mesh insert, the unit captures sediment, rust deposits and floating impurities, shielding downstream plumbing hardware and water‑using devices from wear caused by abrasive particles.

A drain cap fastened with safety lanyard prevents accidental loss or dropping while performing flushing operations, allowing quick waste discharge without taking the whole unit apart. Thanks to its one‑piece compact T‑shaped housing, fewer additional pipe adapters are required, lowering complexity for on‑site fitting and day‑to‑day maintenance work. Well‑suited as primary‑stage filtration hardware, it works reliably for household tap‑water pipelines, underfloor heating circuits, water heater units and central water supply installations.

• Efficient Sediment & Large‑Particle Filtration

Mounted directly within main water supply pipelines, this vertical pre‑filter traps coarse visible pollutants such as sand grains, rust fragments and floating solid matter. It supplies pre‑purified feed water to the entire plumbing network and filters out granular impurities present in domestic tap water.

• Complete Protection for Downstream Water‑Using Appliances

Unfiltered sand and rust debris will cause surface abrasion, internal blockage and corrosion damage to water heaters, heat pumps, underfloor heating circuits, faucets and shower accessories. By intercepting coarse‑grained pollutants right at the water inlet point, this pre‑filter reduces abrasive damage and helps prolong the operational lifespan of all downstream water‑driven hardware.

• Primary Barrier for Whole‑House Water Quality

Serving as the initial safeguard for residential water treatment workflows, this unit holds back large‑size impurities ahead of every water outlet in the building. It upgrades raw incoming water quality for all household scenarios, ranging from potable water processing to laundry and personal shower use.

• Reduced Running Expense for Subsequent Water‑Treatment Equipment

Reverse osmosis devices, ultra‑filtration systems and water softeners depend on built‑in filter cartridges to capture fine‑sized pollutants. Once coarse sediment and rust particles are pre‑eliminated by this vertical pre‑filter, the workload borne by post‑stage purification hardware is greatly relieved. Internal filter cartridges can serve for longer cycles, which effectively lowers recurring replacement costs and routine maintenance overhead.

• Tool‑Free, User‑Friendly Maintenance Design

Equipped with a drain cap secured by a retaining lanyard, the component avoids accidental loss while performing flushing operations. Users only need to open the bottom drain valve to flush out built‑up dirt deposits. Full disassembly of the filter assembly from existing pipework is unnecessary, cutting both labour input and time spent on routine upkeep

• Flushing Procedure

1. Open the bottom drain valve
2. Allow water flow to flush debris out for 10‑15 seconds
3. Close the drain valve
4. The strainer is now clean

No disassembly required. No tools required.

• Recommended Frequency

• Deep Cleaning (Screen Removal)

If water flow is reduced:

1. Close the upstream valve
2. Depressurize the strainer
3. Remove the bottom plug
4. Pull out the 304SS screen
5. Rinse under water – use a soft brush
6. Reinsert the screen
7. Replace the plug
8. Reopen the valve

• Winterization

In freezing climates:

1. Close the main shut‑off valve
2. Open the bottom drain valve
3. Drain all water from the strainer
4. Leave the drain valve open until spring