high cycle butterfly valve

[flulitl0]

What would be a specification for testing a high cycle butterfly valve?

Ideally, how many cycles would be good enough?

Thanks in advance for your help...

 

[bcd]

How many cycles does the customer using the valve expect?

 

[JLSeagull]

What size?
What application conditions, material, etc.?
What reliability requirement (like shutdown valve)?

 

[flulitl0]

What size? 3"
What application conditions, material, etc.? Aluminum for Dry Bulk
What reliability requirement (like shutdown valve)? Long period of maintenances, longevity

 

[flulitl0]

How many cycles does the customer using the valve expect? 50,000

 

[sjrfc2]

I know I've seen 20,000 called out for Navy valves in Mil-V-24624