soket weld check valve 2

[0123654789]

how to maintain and replace sw check valve ?

 

[BigInch]

Ha. Put it within screwed or flanged pups.

**********************
"Pumping accounts for 20% of the world’s energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies)

http://virtualpipeline.spaces.live.com/

 

[0123654789]

thanks Biginch, but I never saw this before. I thought SW check valve doesn't need maintain.

 

[BigInch]

If its got moving parts, its just a matter of time and severity of service.

**********************
"Pumping accounts for 20% of the world’s energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies)

http://virtualpipeline.spaces.live.com/

 

[LUDPEKA1]

Install one with a bolted bonnet?

 

[bcs5274]

some check valves have a top cap which can be taken off to remove the plate and pivot assembly for service

 

[11echo]

Install unions up & downsteam of the check valve. Unions are probably part of your piping spec. and would allow removal of the check valve

 

[0123654789]

normally sw check valve is 2" and below, it doesn't serve frequently, such as surge, blow down...so, I guess this is the reason there is not a removeable pup, we can fix smalll problem on site by opening the top cap. but if it is used in frequent operation place, it has to have removable pup.

am I right, guys?

 

[BigInch]

Must admit that a flanged pup defeats the reason for using socket welds in the first place.

**********************
"Pumping accounts for 20% of the world’s energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies)

http://virtualpipeline.spaces.live.com/