
Quick overview
- Duckbill only This is the replacement duckbill on its own, not a complete check valve.
- Sold each One duckbill per order. It is not the five pack.
- Santoprene The elastomer Stenner specifies for this duckbill.
- Wide fitment Listed for 45, 85, 100 and 170 Series adjustable and fixed pumps plus SVP and BDF Series pumps.
- The part that stops backflow The duckbill is what holds injected chemical in the line between pump strokes.
- A routine wear item Duckbills stiffen and swell with chemical exposure, so they are replaced on a schedule alongside the tube.
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Product details
MCCVDB0 is the Stenner replacement duckbill for the check valve on their peristaltic pumps, moulded in Santoprene. It is the duckbill on its own, sold one per order rather than in the five pack.
What the duckbill does
On a peristaltic feeder, chemical leaves the pump in pulses. The duckbill in the injection check valve opens for each pulse and closes behind it, which is what keeps line pressure and pool water from pushing back toward the pump. When it stops sealing, the pump loses prime, dosing becomes uneven, and the feeder appears to be running while very little chemical is actually reaching the water.
Fitment and service life
Stenner lists this duckbill for the 45, 85, 100 and 170 Series adjustable and fixed pumps and for the SVP and BDF Series. Duckbills are consumables: constant exposure to concentrated chemical stiffens and swells the elastomer over time, so most techs change the duckbill on the same visit as the pump tube instead of waiting for a failure.
| Brand | Stenner Pumps |
|---|---|
| Manufacturer part number | MCCVDB0 |
| UPC | 840034722840 |
| Type | Check valve duckbill |
| Material | Santoprene |
| Fits | 45, 85, 100 and 170 Series adjustable and fixed pumps; SVP and BDF Series pumps |
| Sold as | Each, not a 5 pack |
| Shipping weight | 0.05 lb |
| Ships | Parcel |
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