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Illustration attachedhttp://files.engineering.com/getfile.aspx?folder=236ffca1-b08d-47e5-9091-674e9eb321ae&file=Bolt_on_OS&Y_FE_Needle_Valve.pdf

Is anybody aware of Manufacturers of Bolted on OS&Y Fugitive Emissions (FE) Needle Valves (see attachment for illustrations) Thanks for your Help!

Thanks for all the feedback.

ISO 7500-2 contains PN20 and PN50 for Cast Iron Flanges. Based on this I would assume that the same should exist for Alloy Steel Flanges. However, after sbmitting my post, the verbiage in ISO-7500 would appear to apply to Alloy Steel flanges as well. These DIN and ISO standards are a bit...

Is anybody aware of DIN Flange drilling Template Spec for PN20 and PN50 Flanges? DIN 1092-1 includes all but PN20 and PN50. I'm Designing Valves to meet ASME Class 150, 300 and 600 and they must also meet equivalent PN20, PN50 and PN100. PN100 dimensions in DIN 1092-1 are not the same as ASME...

BS-EN1092-1:2007; 'table17-Dimensions of PN100 Flangs' invokes Annex J for Flange Dimensions on sizes DN400 & 500. However, Flange Thickness (C3) is not included in Annex J. Does thickness require calculation? If so, please provide Standard for Calculation Method (Is it comparable to B&PVC VIII...

How are DIN Valves Designed if no Face to Face Std exists by PN rating?

Awesome micalbrch thx. What DIN Std would specify Face to Face?

In addition, do PN ratings meet Face to Face dims of equivalent ASME Classes?

If I understand correctly, PN 16 (CWP=232 psi) and lower flanges can be used on ASME Class 150 (CWP=275 psi) Valves. PN 25 (363 psi) & 40 (580 psi) on ASME Class 300 (CWP=720 psi). PN 64 (CWP=928 psi) on ASME Class 600 (CWP=1480 psi)... What DIN Standard specifies the valve wall thickness based...

Thanks micalbrch

What Standard contains Flange Dimensions for PN20 (equivalent to ASME 150 class) and PN50 (equivalent to ASME 300 Class)? I have a copy of BS EN 1092-1 but it does not include PN20 or 50. Thanks

Thanks for your feedback Ibrahim. Please do not take the duplication of my question into another forum personally, or that I disregarded your response. I merely wanted to get additionally feedback from alternate fields of expertise.I apologize if I affended you in anyway.

Y-1 refers to statement in VIII Div 1 Appendix Y; Y-1 (under General) paragraph b, where it states the allowanace of HG if using a non-pressure energized seal.

ASME Section VIII DIV 1 Appendix Y states that the rules apply to flat Face, Identical and Non-Identical Flange Pairs where uniform metal to metal contact occurs outside bolt circle. The rules apply for negligible gasket loads (ie. Pressure Energized O-ring Body Seal) HG=0. In addition, Section...

Appx 2 rules do not apply for metal to metal contact outside bolt circle and do not take into account the added stiffness contribution between body/end plate flanges; ultimately resulting in thinner flange thickness values. Re-reading Section VII DIV 1; Appx Y-1(b)".....It assumes that the seal...

ASME Section VIII DIV 1 Appendix Y states that the rules apply to flat Face, Identical and Non-Identical Flange Pairs where uniform metal to metal contact occurs outside bolt circle. In addition, it states that rules apply for negligible gasket loads (ie. Pressure Energized O-ring Body Seal)...