×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Necessity of Fire Test Requirement for Metal Seated Valves
2

Necessity of Fire Test Requirement for Metal Seated Valves

Necessity of Fire Test Requirement for Metal Seated Valves

(OP)
Hi all,

In one of our projects, we requested to VENDOR for a Fire test Certificate for the Metal seated check valves. But the VENDOR replied that, metal seated valves are intrinisically fire safe and no fire test is applicable.

But when i had gone through the API 6FA / ISO 10497, they mention 2 types of leakages, which are internal leakage caused by seat failure and the other is external leakages which are visually detected other than the welding joint leak in the valve to pipe connection.

And in both standards, they no where specify the non requirement of fire test for metal seated valves.

Please clarify in the above and also, if it is intrnisically fire safe, how it shall be determined.

ET

RE: Necessity of Fire Test Requirement for Metal Seated Valves

what they mean is that the material or construction of the valve is suitable to withstand the fire temperature, but they did not get the valve tested in the fire. As you already know, API 6FA specifies the requirements of the fire testing of the valve. Many of the valve manufactures already have the certificate, the test is conducted by burning the valve in the fire and see if it is leaking after burning.

The manufacturer should have the test certificate to proof their product is not leaking after burning.

I hope this could be an answer.

RE: Necessity of Fire Test Requirement for Metal Seated Valves

Some companies believe that the fire test standards are only for soft-seated valves. They believe that metal seated valves will automatically pass the test. But, the standard you mention are for both metal and soft seated valves. And they are partially correct that a metal seated valve should...repeat to emphasize "should" pass a fire test with no problems. But sometimes they do not.

Some of the confusion here is caused by the other popular fire test standard. API-607, which is Fire test of quarter turn valves and valves with non-metallic seals. So unless a check valve has soft seals anywhere in its construction, this standard does not apply. But it does apply to metal seated ball and butterfly valves which are quarter turn. At one time, API-607 and ISO-10497 were exactly the same, but the committees disagree on what should and should not be fire tested, so the API committee changed the scope of 607 back to the former title so metal seated gate, globe, and check valves do not require fire testing.

More than likely, the supplier is thinking API-607 for fire testing applies to their products.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources