Hello,
talking about bolts,
how do you configure the bolts in a Wafer LUG Valve?
I found this:
VANTAGE PDMS ISODRAFT 4-13 User Guide Version 11.6SP1
but i don't know if works.
bye.
If the lugs on the wafer valve have any number of threaded holes, then you have to create a bolt set that would then be referenced by the SCOM using the BLRF attribute. For talking purposes, let's say that you are using a 6in wafer lug valve that has (4) threaded holes. The 6in flange pattern for a 150# rated flange would have (8) bolts. So in your BSET, you would have (8) BLTP elements. (4) of the elements would have their BTYP attribute set to TAP or CAP and their BTHK attribute would be set to a parameter or hard-coded to reflect the tap depth. The other (4) BLTP elements would have their BTYP set to BOLT and their BTHK attribute would be set to 0. You also need to make sure that the SCOM connection type is set to a "W" value. This way PDMS will look at the valve P1 -> P2 distance in the total bolt length calculations for the (4) "BOLT" BTYP elements.
If the lugs on the wafer valve are through hole (ie, no threaded holes at all) then the SCOM does not need a BSET element to reference. The "W" value for connection type of the SCOM still needs set.
Please note that the TAP or CAP setting for the (4) threaded holes in the first IF statement dictate the kind of fastener that the valve will look for in the bolt spec. So you will need to make sure that the bolt spec supports the type of fastener that the valve is asking for. TAP will typically get you a stud with one nut and CAP will typically get you a cap (machine) screw.
Please note also, if you have different TAP conditions, such as material or accessories, then your bolt spec will have to have BSEL choices for the TAP / CAP choices. This will force you to set the BSEL attribute in design for the valve and the mating components (flanges, nozzles, etc). You do not need to set the BSEL attribute though for gaskets or other wafer style components, like spacers.