high point vent in flange
high point vent in flange
(OP)
Does anyone know if there's a standard arrangement for putting a high point vent into a #600 ANSI flange? I need it as part of a hydro test for a 300mm dia line.
If not, I was going to drill a hole near the top of the flange and weld some sore of weldolet that is ablt to be welded to the flat surface of the flange then attach the ball valve etc. Is there such a fitting?
Appreciate the help.
Dave
If not, I was going to drill a hole near the top of the flange and weld some sore of weldolet that is ablt to be welded to the flat surface of the flange then attach the ball valve etc. Is there such a fitting?
Appreciate the help.
Dave





RE: high point vent in flange
Just like an orifice flange.
Greetings
RE: high point vent in flange
David Simpson, PE
MuleShoe Engineering
"Belief" is the acceptance of an hypotheses in the absence of data.
"Prejudice" is having an opinion not supported by the preponderance of the data.
"Knowledge" is only found through the accumulation and analysis of data.
RE: high point vent in flange
RE: high point vent in flange
David Simpson, PE
MuleShoe Engineering
"Belief" is the acceptance of an hypotheses in the absence of data.
"Prejudice" is having an opinion not supported by the preponderance of the data.
"Knowledge" is only found through the accumulation and analysis of data.
RE: high point vent in flange
RE: high point vent in flange
RE: high point vent in flange
If the fit-up is tight, a 1/4" hole drilled radially, parallel to the face of the flange dead centre between bolt holes (similar to an orifice tap) and terminated with a 1/4" NPT tapped into the flange so you can put a fitting on there could represent less risk of leakage later on than you'd get from straining the pipe to bolt up the joint.
BTW, the reason orifice flanges are designed to a different spec (i.e. the reason they're so thick) is to put the taps at the correct locations relative to the orifice plate to make the measurement, and to provide enough meat on either side of the tapping for the people that make their impulse lines out of 1/2" pipe rather than tubing.
RE: high point vent in flange
but I read He wanted a vent on a flange,
nor an upside down dripring after- or an elbolet on the elbow before the flange.
I don't know why He wants it on a flange, and I agree with others it's not the best practice.
God is far away, isn't He?
RE: high point vent in flange