Abstract: A two piece dispensing system for viscous fluids includes a valve body and a valve cap. The valve body threadingly engages the factory nozzle of the viscous fluid tube/cartridge. The hollow valve body and valve cap are slidably engaged via rotational engagement to allow the discharge of fluid or to seal the container. The valve body has two groves with a circumferential scraping edge to collect the fluid, prevent unwanted ejection of the fluid from the tube, and help seal the tube's contents from the atmosphere. The dispensing system is matingly conformed so as to utilize a triple atmospheric seal when closed.