ASME B31.1 code and API valves

[processeng01]

Dear All,

I would appreciate if anyone can shed some light on the following issue:

We are designing boiler external piping and non-boiler external piping per ASME B31.1 code. In this code there is reference to ASME B16.34 as the only applicable valve standard. However in the market most valve suppliers provide valves designed to API 600 (bigger size) and API 602 (small size). The temperature/pressure ratings fit B16.34, but suppliers specifically state that the valve design is as per API.

Is it a code violation to use API 600 & 602 valves within B31.1 jurisdiction?

thanks in advance

 

[nickelkid]

I think you will find that the API standards incorporate the ASME requirements. Your company should have the API standards "on the shelf" if you are specifying these valves.