Water meters VSG-20 are used to accurately measure the amount of consumed cold or hot water under the following conditions: water temperature range from +5 to +95 0С; pressure up to 1.6 MPa; maximum flow 5.0 m3 / h, 63 m3 / day; the diameter of water pipes up to 3/4 inch. The water must be free of solid impurities and soluble salts. The water quality must comply with the standards and sanitary rules. The VSG-20 water meters are equipped with four pointer sensors that record the share of m3 and a roller sensor for reading full cubic meters. The connection is made with threaded couplings with a diameter one inch.