I have been using one of these check valves on our drain pump for three years. It works very well and is almost silent (makes a click when closed). Since our sump is often wet and the pump works a lot, I have to replace the check valve once a year after the inner seal has become stiff and leaking. I'm willing to replace it once a year because I like it quiet. :)
AMIR Indoor Outdoor Thermometer, Digital Hygrometer, Humidity Monitor Wireless With LCD Display, Room Thermometer And Humidity Gauge For Home, Office, Baby Room, Etc(Mini, Battery Not Included)
19 Review
Get Both Convenience And Sustainability With Our Keurig Filter Bundle: 2 Reusable Cups And 300 Unbleached Paper Filters With Lids For A Perfect Single Serve Cup Of Coffee
27 Review
Drainage pump KARCHER SP 1 Dirt (1.645-500.0) (250 W)
19 Review
Saniflo 008 SANIVITE Heavy Duty Water Pump - Gray Color, Enhanced for Higher Ranking
30 Review
Adult Shooting Ear Protection Earmuffs - Noise Cancelling Safety Ear Muffs For Hearing Reduction
26 Review
Chums Original Cotton Eyewear Retainer - Adjustable Unisex Sunglasses Keeper (Standard-End)
27 Review
Soundproof Ear Muffs For Shooting - Adult Hearing Protection Earmuffs For Noise Cancellation And Safety
30 Review
2 Long Eyeglass Chains For Men And Women - SIGONNA Eyeglasses String Holder Strap Chain - Neck Retainer For Eye Glasses And Sunglasses - Rope Lanyard - 2 Pack In Black
39 Review