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Hi @Gerhardl, @BVMan, @peterIgg, Many thanks for taking time to respond to this thread. For sake of clarity I have attached a copy of the certificate mentioned at the begining of the thread, so we all speak the same. Valve Specification asks for Ball Valves to be fire safe design and tested...

Yes the order asks for fire test certification. The supplier refuses to provide "renewed" test certificate and claims that the test certificate was valid at the time of manufacture and release of delivery which is true. THe test certificate expired on 24th mar 2023. Another query here is: Can...

Hi Everyone, We ordered few ball valves from a supplier and they are delivered to site. After constant follow up they submitted the test certificate and it was discovered they are expired a month ago. This Fire test certificate has an expiry date which has already lapsed. Please note: Due...

Thank you SK. I did compare both standards. Here is the high level summary I prepared, would you mind taking a quick glance and give your feedback? https://files.engineering.com/getfile.aspx?folder=0c6f529d-dda1-4512-8653-acb0eea34236&file=Capture.JPG

Thanks SK, you have been really helpful in addressing my queries and taking time to patiently respond to very basic queries I had. I really appreciate that. As I said I am new to valve spec standards and given the short time frame to review and return the drawings from the supplier I had to...

Sorry I didnt understand on the last comment you gave... "you need to be precise that how much information is necessary for u" as in?

please see this attached image. So what I understand from your feedback is BS1873 covers large size valves (upto DN400) whereas API 602 covers upto DN100 --> ok understood. API602 and BS1873 both allows for casted and forged bonnet--> so i am not clear with your comment. My requirement is a...

well thats fine, there is no dispute on the testing standard as such but it was brought to my attention while checking the valve drawing and not during the bid stage. The major doubt is the API 602 vs BS1873 difference which I am struglling to find the technical differences to convince myself

Class 1500, Flanged End Connection to ASME B16.5 RF. Face to Face dimension as per B16.1

Thanks for the reply. As a purchaser I need 2" Globe valve, Regular Bore, Bolted Bonnet, OS&Y, Rising Stem, Straight pattern, renewable plug type Dics with handwheel operated. Please note the body material is Forged Duplex Stainless steel A182F51 (as proposed by supplier). Disc, Stem, Back...

Hi SkEngg, Sorry I was referring to API602 not API607. Whats the key difference between BS1873 vs API602? Sorry for the previous confusion.

Hi I am buying 2" globe valve from a supplier. Our datasheet refers to design as per BS1873 whereas the supplier is offering design as per API607. Which specification is stringent? Can some one throw some light? Honestly I am struggling to read through both standard but it is certainly...