Part #2025T-5 – Pressure Tube/ Check Valve: For Fuji M-Model and TAN7350 Applicators. Pressure tubes with check valve installed. Available only in packs of 5. These tubes fit M-Models Applicators and TAN7350 Applicators. If clogged, the check valve cannot be taken apart; however, they can be soaked in thinner for up to 30 minutes to free any blockage.