ELECTRONIC VERSIONS NOT REVERSE POLARITY PROTECTED (LED). Compatible with miniature radiators in thermal management section (country dependant). RS Miniature Pumps. High quality miniature pumps, ideal for the electronics (cooling), medical or aeronautical industries, and research ; development of portable equipment. RS miniature pumps use the centrifugal principle and give a smooth pulseless flow. They are exceptionally quiet and reliable. Features and Benefits. Very small ; lightweight Maximum dimensions 15.7 x 15.7 x 28.5 mm, 14 g Quiet and smooth pulseless flow Robust machined aluminium construction Can run from batteries, solar panel, or mains power supply Machined aluminium with black anodised finish Stainless steel connectors, work with flexible tubing for push fit Three-port versions available for easy quick priming and bleeding of sealed circuits etc Maximum Viscocity 20 cSt