The Udor Kappa 7/12 Volt Pump is a 2-diaphragm pump with pulsation dampener equipped to a 12 V DC motor. These 7/12 Volt Pumps are mainly used for pest control and horticultural spraying, as well as for lawn care and injection spraying applications. Udor Kappa Pumps are manifolded with anodized aluminum construction internally. Kappa 7, 15, and 18 series pumps have glass-filled nylon heads.