Cast iron gate valves with a rubberized wedge ABRA have excellent chemical resistance to: water, including cold water and hot water, (cold water, including domestic and drinking, and hot water), sea water, circulating water of heating networks, demineralized, distilled, soda water, etc. standard heat carriers of heating networks (heating systems) based on water standard antifreezes based on ethylene glycol and propylene glycol and some others. technical air, etc. The low hydraulic resistance of the valves ensures excellent hydraulic performance. The minimum construction length provides excellent operational characteristics. The estimated service life is at least 50 years, when used on water corresponding to SanPiN 2.1.4.1074-01 and GOST 2874-82 without mechanical damage to the integrity of the protective coating in the temperature range corresponding to this passport. The warranty period, subject to the consumer's compliance with the rules of transportation, storage, installation and operation, is 12 months from the date of commissioning, but not more than 18 months from the date of sale. Subject to compliance with all the requirements of the estimated service life, the warranty period is at least 10 years or 5000 opening-closing cycles without maintenance Leakage class - class "A" in accordance with GOST 9544-93 (leaks are not allowed.) The drive gearbox has a resource for a full service life valves without maintenance. Anti-corrosion coating (internal and external), which excludes corrosion during the entire service life with intact integrity and subject to all the requirements of the estimated service life. During operation, commissioning and repair work, ABRA rubber wedge gate valves are not allowed to be used as a control device.