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Hi, yes, the fluid transported is gas. 60% methane 35% CO2 Small amounts of H2S, nitrogen and of course the gas is saturated with water vapor. There is a low pressure section (6" wc pressure) with piping ranging from 8-20" dia and a high-pressure section (60 PSIG) with diamters of 6,4 and...

This is an anaerobic digester at a municipal waste water treatment plant. Same question would apply for a landfill gas system. -JV

I am designing a digester gas system and am considering using stainless steel piping rather than carbon steel. I have seen 304 and 304L used as well as 316. What are the advantages of each and what would be the optimum material with respect to corrosion resistance? Any recommendations or...

Thanks guys. I have always used 50/50 EG and water for engine cooling water systems. I was caught a little off guard when someone asked if the radiators needed to have a containment basin. I have never seen one around a radiator. It only holds about 100 gallons and the entire system only...

Is anyone aware of the need to provide containment for 50/50 EG systems? I would rather not use PG. -John

Can anyone recommend 2 or 3 sources for steel gate, globe and check valves as well as y-strainers? I have piping systems 3-8" with 250 deg F 50/50 ethylene glycol and water solutions for cooling systems.

Dear racookpe1978 - I came to this project a little late so I am having to revise a poorly thought out design. The contractor has completed most of the civil works. Unfortunately, this includes pouring if the pipe trench - so I am stuck with it. No way can I get qty 12, 6” inch pipes in there...

Everyone – Thank-you for the information and comments. Pennpiper - I am rather stuck with the non-standard nominal schedule 40, 5" pipe as the connections at the remote radiator and at the engine are all 5" (150# flanged) and I have to accommodate all of the pipes into an existing pipe chase...

Thank-you Mike. This is humorous and depressing. I will check the Machinery's Handbook as suggested. -John

Hi - I want to specifify a long bend or long sweep type for all of the 90 deg elbows in a cooling water system. What are the definitions (if any exist) for: (1) Standard Bend (2) Long Bend (3) Pipe Bend How do I specifiy these - is there a convention for the bend radius or?? My syste will...

Thanks Guys. -John

I am reviewing the design for the cooling system for some small (2 MW) emergency diesel generators. The jacket water is circulated through remote mounted horizontal radiators - which is a typical arrangement. However, I noticed that the design was changed to orientate the radiators with air...