ASME B16.33:2012 pdf free download

ASME B16.33:2012 pdf free download
ASME B16.33:2012 pdf free download.MANUALLY OPERATED METALLIC GAS VALVES FOR USE IN GAS PIPING SYSTEMS UP TO 175 psi (SIZES NPS /2 THROUGH NPS 2)
4.4.4 Bending. A valve in both the open and closed positions shall withstand the bending moment specified in Table 3 when applied as indicated in Fig. 1. After the bending stress is relieved, there shall be no permanent deformation that would prevent operation of the valve from the fully open position to the fully closed position. After this test, the valve must comply with the provi- sions of para. 4.2.
4.4.5 Tensile Strength. Schedule 80 or heavier steel pipe shall be connected to the valve for the purpose of transmitting the tensile load. A valve in both the open and closed positions shall withstand the tensile load specified in Table 4, when applied gradually to valve ends, without permanent deformation that would, after release of the tensile load, prevent operation of the valve from the fully open position to the fully closed position. After this test, the valve must comply with the provi- sions of para. 4.2.
4.4.6 Turmning Torque. The torque required to oper- ate the valve after breaking loose from its open or closed position shall not exceed the amounts specified in Table 5. At the end of this test, the valve shall be capable of complying with the provisions of para. 4.2.
4.5 Flow Capacity
The valves, when in the full open position, shall meet the minimum gas flow as specified in Table 6. A valve of each size and type shall be tested to verify that the pressure loss is not greater than that specified in Table 6. The test shall be conducted using a technically recog- nized procedure such as that contained in ISA S75.02. The test fluid and type of test facility and instrumenta- tion are at the discretion of the manufacturer and shall be fully described in their test records.