Why the Perko 0493006PLB is a Marine Essential

• Heavy-Duty Bronze Casting: Built to withstand saltwater corrosion and electrolysis better than any plastic or composite alternative.

• Instant Inspection: The transparent, heat-resistant polymer cylinder allows you to check for debris without ever opening the unit.

• Tool-Free Cleaning: Simply unscrew the top knurled nut by hand to remove the cover and lift out the stainless steel basket for rinsing.

• Integrated Mounting Lugs: Features cast-in lugs on both sides for a secure, vibration-resistant installation to a bulkhead or engine stringer.

• American-Made Quality: Manufactured at Perko's Florida facility, ensuring tight tolerances and readily available replacement gaskets and cylinders.

Technical Specifications

Care & Maintenance

To maximize the life of your engine and your strainer:

• Pre-Departure Check: Visually inspect the sight glass before starting your engine.

• Rinse the Basket: If debris is visible, remove the stainless steel basket and rinse with fresh water.

• Seal Lubrication: Occasionally apply a light coating of silicone grease to the cover gasket to ensure an airtight seal and prevent "sucking air."

• Winterize: Always drain the strainer during winter storage to prevent the cylinder from cracking due to ice expansion

Buying Tip: Maintain Your Vacuum

The 1-inch system relies on a perfect vacuum to pull water from the thru-hull. If your engine is running warm, check your strainer gasket. We recommend keeping a Perko Spare Gasket Kit (0493DP699R) in your onboard spares kit to prevent unexpected downtime.

Installation & Maintenance Pro-Tips

• Mounting Height: For best results, mount the strainer as close to the waterline as possible (but above the seacock). This ensures the pump doesn't have to work too hard to "prime" the system.

• The "Penny" Trick: When the boat is out of the water, check your bronze components for a "pink" hue. If the bronze looks copper/pink, it indicates zinc loss (galvanic corrosion), and your bonding system should be checked.

• Winterization: In freezing climates, ensure you drain the strainer completely using the bottom drain plug. Water trapped in the cylinder can freeze and crack the clear housing.

• Lubrication: Apply a thin layer of waterproof silicone grease to the top gasket and the threads of the wing nut once a season to ensure it always opens easily by hand.