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Thanks for feedbacks

What about thrust on piping as a result of higher flow rate?

In a water piping system we are replacing a 6" check valve with a gate valve (isolation valve) with much higher CV. What would be effect on thrust loads when valve is open? Is there any rule of thumb to have a rough estimate of its impact? Thanls for sharing your thoughts

Thanks for input

We have 2 normally closed valves installed on a water line in our plant. One horizontally installed 6" Gate and another 6" globe valve downstream of it. Pressure upstream gate valve is 500 kPa(g). The isolated section of piping between these valves are filled with water at atmospheric pressure...

Thanks to all the feedbacks the last response to leave a ring round the pipe and not grinding off the weld will work for me

In our plant there is an anchor support that we would like to convert it to a guide. Support is made of a vertical HSS254x254x8 welded to a base plate which itself is bolted to concrete floor. A 6" CS standard horizontal pipe going through this HSS (thru 2 holes) and welded all around to it by...

Thank you all for taking time to respond to my question. Based on your comments i may conclude that if in the past took our plant's operators a long time to pressurize the tank that could be either as suggested due to a large leakage or caused by interruptions in air supply.

I was looking for an insight from someone who has previously done similar practice in field or can refer me to any related reference. I think the question is if the flow rate downstream of PRV remains constant or as the pressure builds up in the tank it is reduced. This impacts the time needed...

Main compressor supplies air to a # of users ours is only one connection to network out of many. what i know is the PRV and flow rate downstream of it.

In our plant we have a tank with capacity of 340000 lit. We intend to use instrument air and pressurize it to 20 kPa to look for leaks. A pressure regulating valve connects plant instrument air at 860 kPa through a 1/2" line to the tank and can provide 20 Kpa at 7.6 L/s. How long does it...

Thanks LittleInch

Consider a 12" pipe carryning water at 90 psig and an isolation valve which leaks. There is another valve downstream of this valve on the line. What pressure i could expect downstream this valve (in the section of pipe between these 2 valves) when both valves are closed and a long priod of time...

Our ducting is designed to +10 w.g., as a part of our system is a dryer. I noticed that shutoff pressure for dryer's blower is 15 w.g. My question is how to protect ducting in case of dryer/blower being started while downstream dampers are closed? What method or device you recommend...

We have a project to install aluminum piping for Breathing Air application in our plant. I just wondering if Victaulic connections can be used on BA piping. Is there any restriction using this type of connections with respect to applicalbe codes? The piping will be installed indoors; design...

In order to dry a network of piping following their drainage, we intend to use a dryer and blow air into piping by establishing a closed loop (to use a hose to connect end of the line to fan inlet). My question is: Can we-at one point along this loop- vent part of the air into another branch...

Thanks for all your comments. LittleInch, what is your basis for :5 feet of the discharge pipework to calculate your overall loss? Is it from any reference?

We intend to put a number of pumps in our plant in lay-up state for a period of time. During this time we blow dry air thru piping system into these pumps from dehumidifier units. The air static pressure out of dehumidifier Unit is limited to 5" W.C. How much pressure drop one should expect...

racookpe: Do not know how i can perform test w/o a dryer. I need to come up w/ a specification to place order for a dryer in that i guess i have to include the capacity=flow rate of dryer.

Due to other considerations we cannot use N2;so in this case how many air changes are needed?