hydro pressure test of seat
hydro pressure test of seat
(OP)
I have a question.
We ordered a Globe Valve 10" 2500# with gear operator, manufacture applied the hydro pressure test of seat with 19Mpa.
Shouldn't the pressure test be applied with 47Mpa according to ASME B16.34?
Thank you!
We ordered a Globe Valve 10" 2500# with gear operator, manufacture applied the hydro pressure test of seat with 19Mpa.
Shouldn't the pressure test be applied with 47Mpa according to ASME B16.34?
Thank you!





RE: hydro pressure test of seat
You are correct that a 2.500 lbsvalve seat-tested according to ASME B16.34 should have a seat-test at 1.1 valve rating, and hence 47 megapascal.
But does the order exactly specify the seat test done and the test required? There could be a misinterpretation or divergence between the suppliers description of normal standard (normally included) delivery specifications and the exact wording of your order.
RE: hydro pressure test of seat
Please check your valve data sheet (VDS). Is delta P mentioned = 19 MPa in VDS? Some manufacturers go by deplta P instead of 1.1 times of full rated working pressure unless otherwise specifically asked.
b.t.w. is valve as per BS 1873 or a control valve?
Regards!!!