Lid Retention Clamp (Part 35751)

The Atlantic Water Gardens Biopress 1600 filter clamp (part number 35751) replaces the lid retention clamp on the Oase Biopress 1600 pressurised pond filter. The clamp secures the filter lid under operating pressure — preventing the pressurised lid from unseating and breaking the filter seal. Replace any clamp that shows cracking, deformation, or reduced grip to maintain proper filter pressurisation and water quality.

Maintain Pressure Integrity

The Biopress 1600 operates under positive pressure from the pump, which places constant mechanical load on the lid clamps throughout the pond season. Each time the lid is opened for media cleaning or bulb inspection, the clamps undergo a flex cycle that gradually fatigues the polymer. By the time a clamp visibly cracks, it has typically lost a significant portion of its clamping force. Proactive replacement at spring startup — or whenever the lid shows any movement under pump pressure — prevents mid-season filter seal failures that degrade water quality and require emergency service.

How to Replace

Shut down the filter and disconnect power. Open the existing clamp to release the lid. Remove and discard the damaged clamp. Install the new clamp in the lid and bucket channel, ensuring it engages fully on both sides. Restart the filter and monitor the lid for any movement or seepage under pressure. Replace both clamps simultaneously if both are showing age.

Ideal for Biopress 1600 filter maintenance in Canadian pond installations.