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  1. GainControl

    does a 300# Gate Valv LCC body API Trim 12 meet NACE MR1075-2003

    reverman, Why do you say 410 stainless is not NACE compliant? Table A.18 in NACE MR0157/ISO 15156-3:2003(E) lists S41000 "...for any equipment or components". Thanks.
  2. GainControl

    3-D Surface Plot

    How can I plot multiple surfaces on a 3-D Surface Plot?
  3. GainControl

    Flange Raised Face Height Tolerance

    Can anyone tell me what the tolerance is on the height of a raised face? I cannot find this called out anywhere in the ASME B16.5* "Pipe Flanges and Flanged Fittings" standard. *Reference Figure 7 or F7 in the standard. Thank you in advance for your help.
  4. GainControl

    CAP SCREWS FOR PED APPLICATION

    CoryPad, Thank you for the information. I submitted additional requests for quotes to some of the suppliers on the IFI website. I have received nine (9) no quotes and not one (1) quote. I am looking for ASTM A193 B7/B7M hex cap screws with EN10204 Type 2.2 documentation. I requested quotes for...
  5. GainControl

    FASTENERS FOR PED APPLICATION

    I am having a very difficult time finding a supplier of cap screws in the US willing to comply with the EN 10204 Type 2.2 documentation. Does anyone know of one? Thank you in advance!
  6. GainControl

    CAP SCREWS FOR PED APPLICATION

    Are there any US cap screw suppliers out there willing to quote complying with the documentation requirements of EN10204 Type 2.2? (PED = Pressure Equipment Directive)
  7. GainControl

    Valve Trim Design / Material Selection

    abscott- I hope this message finds you... Can you tell me the source of your statement: "You can use 316 SS up to 300 psid and about 600F."? I would like a reference that shows my rationale for ruling it out. Thank you!
  8. GainControl

    Valve Trim Design / Material Selection

    The gas is natural gas. The valve is a right angled control valve, 2 NPS. 316 SS is a strong candidate. I don't think 416 SS is allowed per NACE because it is a free-machining martensitic SS. The other material under consideration is 410 SS. My other dilema is the hardness. I believe I need...
  9. GainControl

    Valve Trim Design / Material Selection

    Can someone suggest a good source to guide in the design of a gas control valve trim (plug and seat) set? I must comply with NACE MR0175. Some of my questions are... > What are my material options? > What should I specify for hardness requirements (plug versus seat)? Thank you in advance for...
  10. GainControl

    Control Valve Capacity Testing

    Thank you, JimCasey, for your response. If in both cases (vacuum & pressurized) DP/P1 is .02 or less should I expect any difference in the test results and ultimately in the calculation of Cv? I currently have this situation, different values for Cv on the same set of valves. The only obvious...
  11. GainControl

    Control Valve Capacity Testing

    What differences can I expect in results from running the ISA S75.02 valve capacity tests (compressible - air) under vacuum (e.g. downstream “blowing engines”) versus pressurized (e.g. upstream air compressor)? Thank you in advance for your input!

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