The most common reason water is leaking from your pump is a failing gasket.
Over time, the gasket that seals the two halves of your pump housing together deteriorates, leading to leaks. Let's break down why this happens and what you can do about it:
Gasket Failure Explained
- What is a gasket? Every pump features a gasket (or O-ring in some cases) that creates a watertight seal where the pump's components are joined. This is often where the motor housing connects to the pump volute.
- Why do they fail? Gaskets are typically made of rubber or a rubber-like material. These materials are susceptible to:
- Age: Over time, the rubber dries out, hardens, and loses its flexibility.
- Chemical Exposure: Chemicals in the water being pumped (e.g., chlorine in pool pumps) can degrade the rubber.
- Temperature Fluctuations: Constant expansion and contraction due to temperature changes can weaken the gasket.
- Pressure: Continuous pressure against the gasket can compress and damage it.
Identifying the Leak
- Location: The leak often appears as water dripping from the bottom of the seal plate, where the two halves of the pump are joined.
- Severity: Initially, the leak might be small and intermittent. As the gasket deteriorates further, the leak will become more persistent and significant.
Solutions
The best solution is usually to replace the gasket. Here's how:
- Identify the Pump: Determine the make and model of your pump.
- Obtain a Replacement Gasket: Purchase a new gasket specifically designed for your pump model.
- Disassemble the Pump: Carefully disconnect the power and plumbing, and then disassemble the pump housing. Consult your pump's manual for specific instructions.
- Replace the Gasket: Remove the old gasket and clean the sealing surfaces. Install the new gasket, ensuring it is properly seated.
- Reassemble the Pump: Reassemble the pump housing, tightening the bolts or clamps according to the manufacturer's specifications.
- Test for Leaks: Reconnect the plumbing and power, and then run the pump to check for any leaks.
Preventative Measures:
- Proper Maintenance: Regularly inspect your pump for leaks or signs of wear.
- Chemical Balance: Maintain proper chemical balance in the water to minimize gasket degradation.
- Winterization: If applicable, properly winterize your pump to protect it from freezing temperatures.
By understanding why gaskets fail and taking appropriate action, you can effectively address water leaks in your pump and extend its lifespan.
