What is a Class 800 valve?
Class 800 is not a listed class designation, but is an intermediate class number widely used for socket welding and threaded end compact valves. Suitable for use across Petrochemical, Steam, Mining and Industrial applications. All sizes for Class 800 ball valves comply with ASME B16. 34 and API 608 standards.
Are all API 600 valves full port?
Normally the gate valves are reduced port, but you need to specifier if you need full-port or full-bore. The Api 600 gives the range of flow pass, this is between reduced to full port.
What is the pressure rating for a Class 800 ball valve?
Attributes
| Size | 1-1/2″ (40 mm) |
|---|---|
| Material | Forged Steel |
| Thread | NPT |
| Seat | R-PTFE |
| Working Pressure | 1975 PSI (13.6 MPa) |
What is the difference between API 600 and API 602?
API 600 requires a heavier wall for a given pressure rating than does ASME B16. 34. API 602 also requires a heavier wall for 150#, 300# & 600# classes than does B16. 34.
What does API 600 mean?
API Standard 600, from the American Petroleum Institute, describes the criteria for valve design/construction and the material/trim designations for steel gate valves. The most recent version of this standard was published in January 2015, effective as of July 15, 2015.
What is API 598 standard?
The API standard 598.. Valve Inspection and Testing, covers the testing and inspection requirements for gate, globe, check, ball, plug and butterfly valves. It has acceptable leakage rates for liquid as well as gas testing.
Which is better gate valve or ball valve?
Ball valves are more effective at forming a tight seal and have more reliability and longevity than gate valves, but tend to be more expensive. They are often used for shutoff and control applications. Because ball valves can open and close immediately, they are more likely than gate valves to cause water hammer.
What is double dead end service?
Dead end service refers to installing a lug style butterfly valve at the end of a pipeline without any downstream piping or flanges. If the valve is designed for this it will seal bubble tight against its maximum design pressure.