Sealand 385310076 Duckbill Valve Set 1.5" Black (2Pak)

Sealand 385310076 Duckbill Valve Set Black 1.5" (2Pak)

Keeping a VacuFlush system running smoothly comes down to a few small but essential parts, and the duckbill valve is one of the most important. The Sealand 385310076 Duckbill Valve Set is a genuine 2-pack of black 1.5" duckbill valves designed to restore proper vacuum pressure and stop backflow in Sealand and Dometic vacuum pumps. Over time, these one-way rubber valves naturally wear from repeated flexing, which can lead to weak flushes, longer pump run times, or an inability to hold vacuum at all.

Replacing worn duckbill valves is one of the simplest ways to bring a sluggish system back to full performance without paying for a full pump rebuild or replacement. This set is built to match OEM specifications, so it seats and seals the way the original valve did, with no modification needed. Whether the system sees daily use on a liveaboard boat or occasional use in an RV, fresh valves make a noticeable difference in flush strength and pump efficiency.
Routine replacement is part of normal maintenance for any vacuum-based waste system. Having a spare set like this on hand means a worn valve doesn't turn into a bigger repair down the road, and swapping them out is a task most owners can handle themselves with basic tools.

Key Features

• Genuine Sealand/Dometic 1.5" duckbill valve
• Sold as a set of 2 valves
• Black rubber construction for durability and a reliable seal
• One-way design prevents backflow and maintains vacuum
• Direct OEM fit and replacement

Applications

• VacuFlush vacuum pump systems
• S-series vacuum pumps (S12D, S12DAB, S24D, S32D, S115A, S12, 52A, S32, SW)
• T-series discharge pumps (T12, T24, T32)
• VG2, VG3, VG12, VG24, and Low Profile Vacuum Generators
• Marine and RV vacuum toilet systems

Specifications

• Valve size: 1.5"
• Color: Black
• Quantity: 2 valves per set
• Material: Rubber
• Fit: T-series pumps require 1 kit (2 valves); S-series and VG2 pumps require 2 kits (4 valves)

FAQ Section

Q: How often should the duckbill valve be replaced?
A: Most manufacturers recommend replacement every 1 to 3 years, depending on how frequently the system is used.

Q: How many valves does my pump need?
A: T-series discharge pumps use 1 kit (2 valves), while S-series vacuum pumps and VG2 vacuum generators typically require 2 kits (4 valves total).

Q: What are signs the duckbill valve needs replacing?
A: Weak flushes, longer pump cycles, unusual noise from the pump, or the system failing to hold vacuum are common signs of a worn valve.

Q: Can this valve be installed without professional help?
A: Yes, most owners can replace the duckbill valve themselves with basic hand tools by accessing the pump housing and swapping the old valve for the new one.

Q: Is this valve compatible with both marine and RV systems?
A: Yes, it fits VacuFlush systems used in both boats and recreational vehicles equipped with compatible Sealand or Dometic pumps.