Review on 🐋 High-Performance Whale Inline Valve - Ideal for Suction or Discharge Lines - Enhanced Nitrile Material by Jason Cartwright

I bought this for the bilge pump outlet hose on my boat to prevent the water from the hose above the bilge pump from flowing back into the bilge. It failed within 1 day as the rubber duckbill valve deformed and would not close again. I bought and installed a second valve. It also failed within 24 hours due to a deformed duckbill valve. I then installed a competitor valve that works great.