UWS-Replacement Commercial-Grade Ventilated Transfer Tank Cap Model UWS-CAPSUWS UWS Replacement Commercial Grade Ventilated Transfer Tank Cap Model UWS CAPS A UWS transfer tank is the ideal way to transport non flammable liquids and transfer them to other vehicles and equipment on the jobsite. This replacement transfer tank cap fits any UWS transfer tank and features commercial grade construction. It is also has built in vents for good ventilation. One cap is included per package. Limited lifetime warranty (one year finish,