Complete assembled Vacuflush VHT air pump for Dometics VHT Vacuflush system. This pump is used in the VHT 3600 and VHT 12 (not compatible with SailVac 5200). Simplify repairs with the NEW style upgraded air pump. This replacement pump has an improved external check valve that fixes the old sticking rattail-style valve. The new valve is less restrictive resulting in quieter performance and faster vacuum recovery.