rallel key BSV On request A A Type Size D D G G B4-SH-6-A Bevel-helical gear unit B4

Flender/Flender Gear Units/Bevel-helical gear unit B4

sizes greater than 2. 1.1 Unless otherwise mentioned, various valves should conform to following standards / codes. SW gate valves (1 1/2 and below) : API 6 SW Globe valves (1 1/2 and below) : BS 5 Flanged gate valves API 6 & API-6D Flanged Globe valves : BS 1 1.1 Wherever stellite is specified, it means acing of seat and disc are welded by Cr-Co- alloy. Stellite facing shall maintain minimum hardness of 3 BHN at high temperature. 1.1 All weld end valves shall have bevel ends as per ANSI 1.2. 1.1 If an overlay weld deposit is used for th body seat ring or eating surface, the seat ring base material shall be at least equal to corrosion resistance of the material of the shell. 1.1 By Pass - Unless otherwise noted, by-pass requireme nt for gate valves shall be under - 1 Class : on sizes 2 and above 3 Class : on sizes 1 and above 6 Class : on sizes 6 and above 9 Class : on sizes 4 and above 1 Class : on sizes 4 and above 2 Class : on sizes 3 and above - By-pass valve shall be globe valve. - Contractor shall supply the by-pass valve duly tested and fitted to the main valve. By-pass attachment to the main valve body shall not be screwed. All fillet welds for by-pass installation sha ll be 1% examined by DP / MP test. 1.1 Spiral wound bonnet gasket is to be provided with inner / outer ring except when encapsulated gaskets type body bonnet joints are employed. Outer ring may be avoided in case of non-circular spiral wound gasket used in 1# valve provided the outermost layer of spiral touches the bolts ascertaining the centering. 1.2 Pressure Test - Valves covered under API codes shall be tested as per API 5 unless otherwise specified in th applicable valve code. - Valves covered under BS code shall be tested as per BS 6 unless otherwise specified in the applicable valve codes. 1.2 For all austenitic stainless valves, inte -granu