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Unfortunately, our procurement team only tried getting bids from the Asia Pacific region. The vendor who won the package (which includes this type of valve) claims that there is no valve manufacturer who can do this. How difficult is it to produce an expanding gate valve to PR2 specs? I'm just...

From my understanding, high performance butterfly valves only include double offset and triple offset butterfly valves. Concentric butterfly valves are not high performance butterfly valves. Is this correct? Also, butterfly valves having an offset design cannot be lined. Is this understanding...

Can someone provide me valve manufacturers that currently have an expanding gate valve product with API 6A PR2 certification (API 5000 rating, size 7-1/16")?

If your client is Shell, then TAT testing shall be performed by valve manufacturer as per SPE 77/300 and witnessed by a Shell representative (it is handled by Shell Global Solutions). It will usually entail additional cost and schedule impact. One alternative is to buy valves from manufacturers...

Thanks guys for your helpful replies.

Thank you for your response. The end closure is designed as per ASME Section VIII Div 1 while the launcher and receiver are designed to ASME B31.8.

Client datasheets for launcher and receiver require quick end closures having an ASME U stamp requirement. I would like your opinion on the following points below? (1) Why is ASME U stamp required for quick end closures? (2) If ASME U stamp is required for quick end closures, does it follow...

Is it possible to apply weld build up to valves to reach a higher schedule? For example, you have a buttweld valve with a lower schedule but you need a buttweld valve with a higher schedule, can weld build up be applied to reach the requirement?

Guys thanks for the knowledge that you have shared.

I don't actually have any idea why they placed ball valves in sanitary sewer service. These ball valves are size 2" and below.

Guys, pardon me for leaving out the details. Here's my reply to pennpiper's questions: 1. Commodity = Sanitary sewer Design Temp = 100degC; Oper Temp = 50degC Design Press = 13barg; Oper Press = 2.5barg 2. CS A216 GR. WCB; 150# RATING 3. Petrochemical plant 4. As per ASME B31.3 5. Body and...

Is it acceptable to use a two piece ball valve as an alternative to an end entry ball valve?

Does anybody have or know about a standard for 4130 steel? I need to have a copy look at its mechanical data for comparison with A351 Gr. CF8M. Thanks!

What is the difference between a full port, regular port, or reduced port ball valve? I have read a forum about full port and regular port. We require a regular port ball valve but a vendor gave us a reduced port. Is there a difference?