Dear cloa,
I am in the Middle-East. I have a list of approved manufacturers in Europe & Asia. I contacted them & they are unable to manufacture the required BONNET GASKET, DOUBLE JACKETED WITH MIN. 95% PURITY GRAPHITE FILLED. All of them offer SS304+GRAPHITE.
I have a doubt whether Double...
pennpiper (Mechanical),
I am not yelling. I am just asking suggestions from expert like you. I tried with many suppliers but they have informed that BONNET GASKET, DOUBLE JACKETED WITH MIN. 95% PURITY GRAPHITE FILLED is not in their scope of manufacturing. All of them offer SS304+GRAPHITE.
I...
I HAVE AN ORDER FROM MY CLIENT FOR 4" GLOBE VALVE CLASS 300 TRIM 1 AND THE SPECIFICATION MENTIONS THE BELOW REQUIREMENT:
BONNET GASKET, DOUBLE JACKETED WITH MIN. 95% PURITY GRAPHITE FILLED.
MY SUPPLIER IS OFFERING STANDARD SS304+GRAPHITE FOR THE BONNET GASKET. CAN ANY ONE ADVISE.
Yes, you can apply Trim 5 inplace of 13% Cr Stellite (Trim 8). Trim 5 is for hard facing on body seat as well as wedge seat. Trim 8 is hard facing on body seat only. Trim 5 is superior to 13% Cr Stellite (Trim 8).
Dear bcd (Mechanical),
Many thanks for your valuable suggestion. Yes, acceptance criteria is as per ASME B16.34. Please send your valuable suggestion. A local testing lab is informing that they can carry out RT/MT on our stock valves. They informed that they will dismanle the valve, carry out...
my client requires gate valve with trim 8 with back seat bushing stellited for hydrogen rich service, but my manufacturer has supplied gate valve with trim 5. My manufacturer informs that trim 5 is superior to trim 8 & stelliting back seat bushing is part of trim 5. Can any one give me an idea...
Many thanks to pennpiper (Mechanical)& gerhardl (Mechanical) for your valuable guidance.
Further, please inform if parallel slide gate valve is similar to split wedge gate valve. What is the difference. Can we offer parallel slide gate valve if split wedge gate valve is specified.
Dear All,
Many thanks for your valuable suggestion. This is gate valve as per API600. Below is the alternate trim numbers mentioned in API-600 & my client is rejecting based on the below list. I need to convince my client to accept the valve. Could you please give me any other technical point...
I have a requirement of 10" gate valve WCB, Class 300, Trim 1. My client requires Radio graphic Test (RT) and Magnetic particle Test (MT) to be carried out on the valves during the manufacturing process. But my manufacturer is informing that only Radio graphic Test (RT) can be carried out on the...
Dear reverman,
Many thanks for your valuable suggestion. This is gate valve as per API600. Below is the alternate trim numbers mentioned in API-600 & my client is rejecting based on the below list. I need to convince my client to accept the valve. Could you please give me any other technical...
Dear Friends,
I have the below specification from my client. The spec mentions VALVE TO HAVE SOLID 13 CHROME WEDGE AND SEAT RINGS,BODY WEDGE GUIDES TO BE STELLITED. I do not understand why solid 13 chrome wedge & seat rings are required. My client also does not have an idea about this. Can any...
