ESPA Filterkit Plus FKP Filter Replacement Parts

The one that matches the diameter of your system:

• 1½-inch side valve (€109): for 50-mm pipe, the most common household size
• 2" 6-way side-mount valve (€134.90): for 63 mm pipe, high-flow installations

How to check: Measure the outer diameter of the PVC pipe that connects to the valve. Also, make sure your valve is side-mounted (the valve is on the side of the filter); if it’s mounted on top, it’s a top-mounted valve and doesn’t belong to this product line.

Both are 6-position valves: filtration, backwash, rinse, recirculation, drain, and shut-off.

If you’re unsure, send a photo of the filter-valve assembly and another of the connection via the contact form: we’ll confirm the size for you.

It depends on what's wrong and how old the valve is:

• Repairing it is worth it when the problem is a gasket, a spring, or a lever, and the valve is relatively new. The spare parts catalog is available under “selector valve parts.”
• Replacing the entire valve is worth it when the valve is very old, the body is worn out, or several symptoms occur at once—water is draining into the sewer, the lever isn’t setting properly, and there’s also a leak around the shaft

A practical consideration: with older valves, it’s frustrating to replace the internal gasket only to discover a few weeks later that the wear was actually in the distributor. If the valve has already given you two warning signs, replacing the entire unit (€109–134.90) will give you peace of mind for several years.

Before making a decision, check that the problem is actually with the valve: if sand appears in the pool, the culprit is the filter’s manifold arms, not the valve.

A cracked or loose return arm, almost certainly. The return arms act as a barrier between the sand and the return pipe; when one opens up, sand enters the pool.

Procedure:

• Shut off the pump and empty the sand filter—this is a good time to replace the sand if it’s several years old
• Check ALL the arms by holding them up to the light, not just the one you see is broken
• Replace any damaged ones with the correct size: FKP 500, FKP 600, or FKP 750
• Check that all arms are tight when reassembling: a loose one lets sand through just like a broken one

At €8.90–18.90 per unit, if the filter is old, replace the entire set while it’s open.

Note: If what comes out is fine dust instead of grains, the cause is worn-out filter media that no longer retains sand—in that case, the solution is to replace the filter media.

The one that matches your filter's diameter: FKP 500, 600, or 750 millimeters.

Where to find it:

• Filter label: the model includes the diameter
• Tape measure: Measure the body at its widest point

And if you’ve already opened the filter, the best way to check is to compare the removed arm with the photo on the product page before ordering.

Buying tip: Order at least a couple of spare units in addition to the ones you need. They’re inexpensive parts, and having one on hand at the shed prevents you from being stuck with an open filter while waiting for an order.

No. If the cover leaks when the flange is tightened to its normal torque, the cover gasket (€4.76) is worn out. Overtightening will only crack the cover (€18.90) or damage the flange (€29.75)—and turn a €5 repair into a €30–50 one.

Proper replacement:

• With the pump shut off and the filter depressurized, remove the cover
• Clean the gasketseat: limescale prevents a proper seal even if the gasket is new
• Install the gasket without twisting it, using a thin film of silicone lubricant
• Tighten the flange to its normal torque, without over-tightening

If the cover is already cloudy or cracked, take this opportunity to replace it: you’ll regain the ability to see the condition of the filter media without opening the filter—which is exactly why it’s designed to be transparent.

Guideline: every 4–6 cycles with properly balanced water; sooner if the water is hard. Signs that the filter is worn out:

• High water pressure that doesn’t drop after a wash —the definitive sign
• Water that doesn’t clear even though the filter has been running for hours
• Fine silt returning to the pool
• Sand clumped into hard blocks when opening the filter

Checklist with the filter open —an extra half-hour that saves you from having to reopen it in two months:

• All collector arms, one by one, held up to the light
• New lid gasket when closing, even if the old one looks fine (€4.76)
• Condition of the flange and the gasket seat

When refilling, consider filter glass: it filters more finely, requires less water to rinse, and lasts longer than sand. Both are available in filter refills.

The Filterkit Plus is a water filtration system consisting of a filter and a pump. This page covers the filter; spare parts for the ESPA pump —pre-filter basket and cover, gaskets, impellers, diffusers, mechanical seals, and capacitors—are listed under ESPA pump spare parts, organized by model.

How to identify your problem:

• Filter: sand in the pool, leak from the cover, pressure gauge not working, unusual pressure
• Pump: fails to prime or loses prime, hums without starting, leaks between the housing and motor, new noise
• Valve: water draining to the outlet in filter mode, lever not indicating positions

To identify your pump, check the motor nameplate: it lists the model (Silen, Nox, Leader...), the power rating, and the capacitor value.

Yes. Quimipool is an official ESPA E-Partner and sells only original manufacturer parts with their official warranty.

In a filter, this is especially important for two parts:

• The collector arms: the width of the slot determines what is retained and what is allowed to pass through. An ill-fitting part will allow sand to return to the pool from day one
• The lid gasket: only the exact geometry ensures a proper seal in a filter operating under pressure

And for exposed parts like the transparent lid, the original plastics have UV protection: generic parts yellow and become brittle within a couple of seasons.

If you have any questions about compatibility, please send us a photo via the contact form before purchasing.

On this same page, you'll find the complete parts list with direct links to each part:

• 6-wayselector valve: 1½" on one side and 2" on the other
• Manifold arms: FKP 500, FKP 600, and FKP 750
• Cover: gasket, transparent cover, and flange
• Control: pressure gauge

The two key pieces of information to avoid errors: your filter’s diameter (500, 600, or 750) for the manifold arms, and the pipe diameter (50 or 63 mm) for the valve.

Shipping within 24–48 hours to mainland Spain for in-stock replacement parts; free shipping on orders over €150. Genuine ESPA replacement parts with an official warranty (E-Partner).