The Aqua Marina Double Action Pump Manometer V1 has a universal connection and can therefore be used with hand pumps from, among others, Bravo. The Manometer is provided with a screw thread, making it easy to replace. Unscrew the old pressure gauge and screw in the new one. The old manometer can sometimes get stuck, a pipe wrench can offer the solution in that case. The new pressure gauge can simply be tightened by hand.