H3-VH-26-D flender reducteur Helical gear Reduction Boxes H3

Flender/Flender Gear Units/Helical gear Reduction Boxes H3

CONSTRUCTION 4.1 Valve design shall meet the requirements of API 6D and other referred codes and shall be suitable for the service conditions indicated in Valve Data Sheet. The ASME Boiler & Pressure Vess el Code, Section VIII, Division 1, may be used to design the valve body. Allowable stress requirements shall comply with the provisions of ASME B3.3 . In addition, corrosion allowance indicated in Valve Data Sheet shall be considered in valve design. Howev er, the minimum wall thickness shall not be less than the minimum requirement of ASME B1.3. The Manufacturer shall have valid license to use API 6D monogram for manufacture of ball valves. 4.2 For above ground valves, alve body design shall be eithe fully welded or bolted type, as indicated in Valve Data Sheet . Valve body joints with threads are not permitted. For buried valves, alve body design shall be fully welded type only. Valve body joints with bolts orthreads are not permitted. 4.3 Ball shall be of single piece, solid type construction. 9 of 1 STANDARD TECHNICAL SPECIFICATION MECON LIMITED REGD. OFF: RANC HI 8 OIL & GAS SBU, DELHI DOCUMENT NO. Page 8 of2 TITLE BALL VALVE MEC/TS/0/2/0 REVISION : 1 EDITION : 1 4.4 Valves shall be Full pening (FO) or Reduced pening (RO) as indicated in Valve Data Sheet. FOvalves shall be suitable for the passage of all types of pipeline scraper and inspection pigs on re gular basis without causing damage to either the valve component or the pig. The FOvalve shall provide an unobstructed profile for pigging operations in either direction. FOvalves shall be designed to minimize accumulation of debris in the seat ring regi on to ensure that valve movement is not impeded. Theopening size of RO valves shall be corresponding to that of FO valve of smaller nominal diameter as indicated in able below . For size of particular rating not covered in API 6D, the opening size of the RO valve shall be as per Manufacturers standard. Nominal Valve SizeNominal Valve Size for Re