Why is my filter pressure too high even after backwashing?

High pressure post-backwash often points to calcified media, clogged internal laterals, or a faulty pressure gauge. We recommend stainless, glycerin-filled gauges for accurate PSI monitoring.

What causes sand to blow back into the pond?

Sand in the pond indicates a cracked internal lateral or hub assembly. This requires immediate repair to prevent abrasive media from damaging your pump's mechanical seals and impellers.

How often should I change filter O-rings?

Inspect O-rings annually. Replace them if they are brittle, cracked, or flattened to maintain a vacuum-tight seal and prevent air leaks into the hydraulic system.

Collection: Filter Parts

Maintaining water clarity starts with the integrity of your filtration hardware. Over time, seal degradation or mechanical wear in switching mechanisms can lead to "internal bypass," where unfiltered water returns to your system. A $15 gasket failure can quickly lead to an $800 filter tank replacement if over-pressurization occurs.

Our catalog features OEM-spec replacement parts and complete filter rebuild kits for sand, cartridge, and pressurized bio-filters. Ensure your system maintains its rated micron-level precision and prevents contaminants from compromising your aquatic ecosystem.

Aquascape 1-1/2″ FPT Backwash Cap For UltraKlean Pressure Filter/UltraKlear UVC

Sale

Aquascape 1-1/2″ FPT Backwash Cap For UltraKlean Pressure Filter/UltraKlear UVC

Vendor:
Aquascape

Regular price $13.59 CAD

Regular price ~~$16.99 CAD~~ Sale price $13.59 CAD
Unit price per

Sale
Aquascape UltraKlean™ 2000/3500 Pond Filter Valve Kit

Sale

Aquascape UltraKlean™ 2000/3500 Pond Filter Valve Kit

Vendor:
Aquascape

Regular price $59.99 CAD

Regular price ~~$74.99 CAD~~ Sale price $59.99 CAD
Unit price per

Sale
Aquascape UltraKlean 2000/3500 Pond Filter O-Ring Kit

Sale

Aquascape UltraKlean 2000/3500 Pond Filter O-Ring Kit

Vendor:
Aquascape

Regular price $35.99 CAD

Regular price ~~$44.99 CAD~~ Sale price $35.99 CAD
Unit price per

Sale
Aquascape UltraKlean 2000/3500 Pond Filter Fitting Kit

Sale

Aquascape UltraKlean 2000/3500 Pond Filter Fitting Kit

Vendor:
Aquascape

Regular price $75.99 CAD

Regular price ~~$94.99 CAD~~ Sale price $75.99 CAD
Unit price per

Sale
Aquascape UltraKlean 2000/3500 Pond Filter Discharge Shutoff Valve Kit

Sale

Aquascape UltraKlean 2000/3500 Pond Filter Discharge Shutoff Valve Kit

Vendor:
Aquascape

Regular price $43.99 CAD

Regular price ~~$54.99 CAD~~ Sale price $43.99 CAD
Unit price per

Sale

Critical Components for Pure Water

Multiport Valve Components: Replacement rotors and spider gaskets. Fixing a worn gasket prevents internal bypass, ensuring 100% of the water passes through the media. Available as individual parts or full assembly kits.

Internal Laterals & Hubs: Calibrated drainage elements made from impact-resistant ABS. These hold the filter media in place while ensuring uniform flow distribution across the tank.

Pressure Gauges & Air Relief: ANSI B40.1 compliant monitoring tools. Essential for identifying backwash cycles and preventing dangerous over-pressurization of the filter vessel.

High-Performance O-Rings: Precision-fit EPDM lid seals. These maintain vacuum-tight integrity, preventing air leaks that can lead to pump cavitation and lost prime.

Technical Standards & Economic Efficiency

In modern water management, filtration precision is non-negotiable. A faulty valve seal can increase chemical consumption by 30% as the system struggles to compensate for unfiltered bypass. Using certified filter replacement parts ensures your hydraulic "Duty Point" remains stable and your OPEX stays low.

Component	Standard / Material	Critical Function
Spider Gaskets	High-Density EPDM	Prevents water leakage to waste line
Laterals	Slotted ABS / Polypropylene	Prevents sand/media from entering the pond
Pressure Gauges	Stainless / Glycerin Filled	Dampens vibration for accurate PSI reading
Filter Cartridges	Reemay® / Antimicrobial	Traps particles down to 5–10 microns

Managing Filtration Infrastructure in Cold Climates

For systems in Canada and the Northern US, filter tanks are highly susceptible to ice expansion damage. A hairline crack in a lateral or a frozen drain plug can ruin a filter bed. We provide reinforced winterization plugs and gaskets that maintain flexibility at sub-zero temperatures, ensuring a safe spring startup.

The Danger of "Sand Tracking"

If you notice filter sand at the bottom of your pond, it’s a sign of a cracked lateral. Replacing these internal components immediately is vital; otherwise, the abrasive media will travel to your pump, destroying mechanical seals and impellers.

Bio-Security & Media Maintenance

In Koi and aquatic habitats, the filter is a living organism. Our replacement filter media and specialized bio-balls are designed for maximum surface area, supporting the nitrifying bacteria essential for ammonia removal.

Pro-Perspective: The "Valve Leak" Warning

Check your waste line frequently. If water continues to drip while the valve is set to "Filter," this indicates a worn spider gasket or rotor seal. Ignoring this issue causes internal bypass, increases chemical consumption, and reduces overall filtration efficiency. Replacing the gasket early can prevent costly filter media contamination and "silent" water loss.

strong>Not sure which seal you need?

Don't guess with filtration safety. Send us a photo of your filter’s data plate — our technicians verify compatibility with professional brands across North America within 24 hours.

Restore Your Water Clarity

✔ Fast Shipping Across USA & Canada
✔ OEM & Certified Aftermarket Options
✔ Bulk Pricing Available for Contractors
✔ Expert Technical Support Included

Keep your system at 100% efficiency with our certified filter maintenance kits. Explore parts for sand, cartridge, and pressurized systems.

Frequently Asked Questions About Filter Components

How do I know if my multiport valve spider gasket is failing?

The most common indicator of a worn spider gasket is water constantly leaking out of the waste line while the valve is set to the "Filter" position. You may also notice cloudy water despite continuous operation, which signals an internal bypass where unfiltered water is slipping past the seal and returning to your pond.

Why is my filter pressure (PSI) too high even after backwashing?

If backwashing doesn't lower the pressure, your filter media may be "calcified" or severely clogged, or the internal laterals could be obstructed. It is also possible that your pressure gauge is faulty. We recommend using glycerin-filled gauges to prevent needle flutter and ensure accurate diagnostic readings.

What causes sand or filter media to blow back into the pond?

This is a classic symptom of a cracked internal lateral or a broken hub assembly. These slotted ABS components are designed to keep media inside the tank while letting water pass. If one is damaged, media will travel through the plumbing, potentially destroying your pump impellers and seals. Immediate replacement is mandatory.

How often should I replace filter lid O-rings?

O-rings should be inspected annually during spring startup. In harsh climates like Canada and the Northern US, the constant freeze-thaw cycles can cause EPDM to lose its elasticity. If the seal appears flat, cracked, or brittle, replace it to prevent air leaks that cause pump cavitation and lost prime.