What is fire safe design ball valve?
Fire Safe Valve is a valve that can maintain its pressure containing ability during and after a certain period of fire exposing. This kind of valve we use because the possibility of hazardous or flammable fluid leakage from the valve during fire event.
What is the difference between API 598 and API 6D?
ASME B16. 34 and API 598 are basic specifications for general purpose valves. API 6D provides more detailed requirements for the inspection and testing of pipeline valves, which are more demanding than ASME B16. 34 and API 598, such as longer pressure duration, more test items, and more complex operating procedures.
What’s the difference between API 6FA and API 607?
API 6FA is fire test for API 6A and API 6D valves, while API 6FD is for check valves. Regarding API 607, it is for quarter-turn valves and valves with soft seats. The fire test ensures that the valve has minimal leakage when fire takes place.
What is the fire safe test for API 607?
Regarding API 607, it is for quarter-turn valves and valves with soft seats. The fire test ensures that the valve has minimal leakage when fire takes place. The valve must withstand a fire (750 – 1000°C) for 30 minutes under the pressure of 75% of the max. working pressure. Then, the leakage should be within limited amount.
What is the fire exposure period for API 6FA?
API 6FA standard establishes acceptable levels for leakage through the test valve and external leakage after exposure to a fire for a 30-minute time period. The fire exposure test period has been established on the basis that it represents the maximum time required to extinguish most fires.
What kind of valves are covered by API 6FA?
API 6FA applies to quarter-turn soft seated valves as covered in API 6D and API 6A, pipeline valves include ball and plug valves, for example, ball valves, gate valves, plug valves but check valves are not included and the fire test for check valves is specified in API 6FD.