H4VV-28-C operating conditions and extreme temperatures N Helical gear unit H4

Flender/Flender Gear Units/Helical gear unit H4

ght to require additional testing at any time to confirm or further investigate suspected fault. he cost incurred shall be toManufacturers account. In no case shall any action of Purchaser or its Inspector relieve the Manufacturer of his responsibility for material, desi gn, quality or operation of valves. Inspection and tests performed/ witnessed by the Purchasers Inspector shall inno way relieve the Manufacturers obligat ion to perform the required inspection and tests. 6.0 TEST CERTIFICATES Manufacturer shall submit the following certificates : ) Mill test certificates relevant to the chemical analysis and mechanical properties of the materials used for the valve construction as per therelevant standards. ) Hydrostatic test certificates complete with records of timing and pressureof each test. ) Test reports of radiograph and ultrasonic inspection, as applicable. ) All other test reports and certificates as required by pplicable standard and this specification. The certificates shall be valid only when signed by Purchasers Inspector. Only those valves which have been certified by Purchasers Inspector shall bedespatched from Manufacturers works. 9 of 1 MECON LIMITED DelhiPROCESS & PIPING DESIGN SECTIONTECHNICAL SPECIFICATION FOR CHECK VALVES TECHNICAL SPECIFICATION NO. : ME /TS/0/6/0 REV-2 Page 6 of 8 7.0 PAINTING, MARKING AND SHIPMENT 7.1 Valve surface shall be thoroughly cleaned, freed from ru st and grease and applied with sufficient coats of corrosion resistant paint. urface preparationshall be carried out by shot blasting to SP-6 in accordance wi th Steel Structures Painting Council Visual Standard SSPC-VIS-1. 7.2 All valves shall be marked as per applicab le standard. The units of marking shall be metric except nominal diamet er which shall be in inches. 7.3 Valve ends shall be suitably protected to avoid any damage during transit. All threaded and machined surfaces subject to corrosion shall be well protected bya coat of gre ase or oth er suita