HM 155 Water Hammer Apparatus
1 laboratory trolley, 2 drain valve, 3 water connection, 4 shut-off valve, 5 pressure vessel with cushion of air, 6 control unit, 7 safety valve, 8 solenoid valve, adjustable closing time, 9 solenoid valve, constant closing time, 10 electronic pressure transmitter, 11 variable-area flowmeter, 12 manometer, 13 spiral pipe 60m