Because our world consists of molecules, a better understanding of molecules and their interactions is key to answering many important questions such as the origin of life, improvement of catalysis, suppression of air pollution, etc. Researchers in the field of molecular physics and physical chemistry use fast pulsed valves to let a small 'puff' of gas into a vacuum apparatus in order to form a molecular beam for academic research on molecules and for diagnostic purposes such as breath analysis. These fast pulsed valves form a small market that was supplied worldwide in the past by only a few one-person companies. Many of these company owners are now retiring so the supply of pulsed valves has greatly decreased. Furthermore, improvements in pulsed valve performance are possible, making it possible to make the molecular beam apparatus smaller, cheaper, and more sensitive. In order to optimize use of a fast valve a suitable fast detector is needed, along with accessories for specialized work. Our goal in PUFF is to develop a reliable and improved fast pulsed valve with detector and accessories and make these available to the community as a product from a medium size business, Photek Ltd, Hasting UK. Three young scientists learned how to approach this development work, have made good progress in producing and improving fast pulsed valve, and are also using these products directly in their on-going PhD research projects.