🔧 Upgrade your pump game with flawless flow control!
This 4-pack of 1.5-inch black duckbill valves by Sunluway is engineered for Dometic and Sealand vacuum and discharge pumps, ensuring reliable one-way flow and preventing backflow. Crafted from durable rubber, these valves are essential for maintaining peak VacuFlush system performance and come as a complete kit compatible with multiple pump models.
| Material | Rubber |
| Brand | Sunluway |
| Inlet Connection Size | 1.5 Inches |
| Inlet Connection Type | NPT |
| Outlet Connection Type | FNPT |
| Number of Ports | 2 |
| Outlet Connection Size | 1.5 Inches |
| Valve Type | check valve |
| Manufacturer | Sunluway |
| Item Weight | 2.89 ounces |
| Package Dimensions | 5.75 x 3.86 x 1.73 inches |
| Manufacturer Part Number | Sunluway |
S**I
Just thick enough
These valves are made from just the right material thickness to perform well and not invert themselves when facing high pressure or temperatures. Yet to try the orange gold standard ones mind
J**E
Perfect fit
Bought these a few months ago and install was pretty simple. I like the snug fit. Will buy again.
B**K
Didn’t work in my system
Didn’t work and don’t buy, couldn’t get them to seal. I spent all afternoon troubleshooting. Finally broken down and bought OE Dometic part and within 15min had my system up and running.
D**.
Full set, Fast
Used along with a new Bellows assembly to rebuild an older vacuum flush S pump. Didn't have to drive to get them for full price.
A**N
Buy OEM, not compatibles
Well, decided to cheap out and buy these. All seemed well, except my pump would still cycle after 20 min. One of the 4 original I removed, had an open mouth. SO that was my problem right? No, having to take the vac system out 4 times replacing the bellows, check and recheck the tank and fittings and eventually passing a pressure test on the system. WHAT IS WRONG ??? I put a fernco coupling with PVC Cap in the inlet to insure a 100% seal, I cycled the pump. Then I heard a slight hissing sound from the outlet pipe. I tipped up the tank and put water in the outlet pipe and watched it drain down to the new duckbill mouth. hissing began again, put my finger over the duckbill mouth and the hissing stopped. BRAND NEW DUCKBILLS THAT DO NOT HOLD A SEAL . Cost was not the issue, the frustration of finding the problem was. and that was not expected to be the new duck bills, which is the 1st thing I replaced !!!!!!
W**L
Excellent product
Good quality product and big changer for the vacuum system
T**E
Worked as advertised
Replaced the valves on my Sea Ray. Work great.
M**F
Wouldn't seal properly for me.
I tried these and couldn't get them to seal properly. I had to bite the bullet and purchase the OE parts to replace these.Just in case I get a response from your readers saying I did something wrong, I own 3 boat yards and have sold and installed a bunch of these.
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