The SV-100 Slider Valve for solder paste dispensing is said to be up to 20% faster than standard auger dispensers; reportedly achieves 20,000 dots per hr. (on 1 mm grid) while delivering dots of less than 300 µm (0.012") for solder paste types 4, 5 and 6.  Dots as small as 125 µm (0.005") in diameter can be achieved with type 6 paste. Dispenses dots and lines of pastes and fluids that contain metal additives with minimal clogging. Is compatible with Pb-free and no-clean solder pastes and silver-filled epoxies. Is for solder paste dots for passive components smaller than 0603, rework of BGA and QFN electrical connections, lines and patterns for RF shield attach, low-volume/high-mix applications, and unique patterns of conductive epoxy.
 
Asymtek, www.asymtek.com