What are the specifications of orifice flanges? Be comprehensive
Appendix A of national standard HG 20592-2009 is marked with only WN (high neck welding flange)Pressure rating PN10~PN160Beside the flow hole socket welding or NPT mouth NPS 15 bearingASME B16.36-2009 American Standard marked WN (high neck flange) and SO (neck flange) twoPressure level 300LB~2500LB no 150LBBeside the flow hole for the 1/2 "NPT age
There is no standard flange hole is 6, in order to install the need, mainly to avoid directional (plus or minus 90 degrees, plus or minus 180 degrees), flange holes are 4 multiples
Appendix A of national standard HG 20592-2009 is marked with only WN (high neck welding flange)Pressure rating PN10~PN160Beside the flow hole socket welding or NPT mouth NPS 15 bearingASME B16.36-2009 American Standard marked WN (high neck flange) and SO (neck flange) twoPressure level 300LB~2500LB no 150LBBeside the flow hole for the 1/2 "NPT age
