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Thank you all for your input. NozzleTwister and most recently rconner have hit the nail on the head with their input. The high temperature will melt the zinc coating around 775 deg F. So, I managed to find a hot shoe that I think will suit our needs. Thank you all very much. Until next...

This is a compressor exhaust pipe that has existed for 35 years as plain carbon steel. The pressure is very near atmospheric. We are replacing the existing exhuast silencer with a catalytic converter. The unit is set to shut down at 1250 F. Nothing we are doing should increases the...

I will be installing a horizontal section of 304H SS pipe in an outdoor, refinery environment. The plan is to weld a pipe shoe to the pipe and rest it on existing galvanized steel. However, I am concerned with galvanic corrosion. What is the best approach? 1. Make the pipe shoe of 304H and...

We are installing (2) 12' sections of 304H SS pipe that need to be supported in a couple spots. These are outdoor applications at an oil refinery. IN order to support the pipe, I will need to weld material on the pipe that will then rest on galvanized steel. Any suggestions? One application...

I'd like to give some specifics that may shed light on the project. We have an existing natural gas fired waste gas compressor (12 cyl Ingersoll Rand) and we're replacing the existing exhaust silencer with a combined silencer / catalytic converter. We're also replacing the upstream and...

Can a piping spec be used if the process conditions do not fall into the specified range? For instance, a spec states: 285 PSIG at min temp through 95 PSIG at 750 F Can this piping spec be used if I want to pipe gas vapors at 0 PSIG (exhaust pipe open to atm) at 1200 F? Can anyone direct me...

Do you know of a website that lists properties of various stainless steels? I am specifically looking for the allowable bending stress and allowable shear stress of 316 SS. Is there ever an occassion where people design to the ultimate tensile strength limit as opposed to the yield strength...

I need assistance determining what size (OD, wall thickness, etc) sample probe we can install in a stack that can handle the vibration and force due to gas (density = 0.068 lb/ft^3) velocity. We have a flue gas stack with inner diameter of 100". The velocity of the flue gas is about 62 feet...

I need to supply steam to a heater and an eductor in a small enclosure (20"x20"x8") that is attached to a vessel nozzle. The steam flow through the eductor will be the motive fluid to create a suction to get our sample from a flue gas stack. The vendor indicated they'll need between 20-80 psig...

Can someone please explain the process of using propane as the fuel for a generator. For instance: The propane is brought to the site in a truck as a liquid, then pumped into a 1000 gallon storage tank. Then..... What is the phase, temp and press at the different stages? Does "Rated at 250...

Hi all.... My question is about the location of steam traps in a line. I realize its purpose is to release condensate while not releasing steam, but I have a particular circumstance that I can not figure. Consider a 3/4" line coming off the top of an existing horizontal 3/4" 150# steam line...

We are replacing a vent valve that keeps a steam header at 80#. There are instances where higher pressure steam may enter the line. In this case, someone manually opens this valve to reduce the pressure. I requested process data from the client and was told the flowrate on the particular line...

Anyone have experience with eductors? I am a new engineer and am looking for pointers on calculating the flowrate needed to move a gas. We have up to a 150# steam supply as the motive stream. The question is what pressure can we regulate this steam to in order to still maintain the flow. We...

Thanks for all the great suggestions and assistance. To ensure safety and reliability, we found a company that sells an Automatic Insertion Device that uses the line pressure to actually insert the probe. The unit has an oil tank taht is used as the presuurizing medium between the line and the...