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  1. bgswartwood

    Relief Valve Capacity

    Natural gas plant, discharge piping on a compressor, 1" weldalet, 1" AG relief valve, 985 psig MAOP, minimal discharge piping. Will a double x fitting change the relief capacity? Where do I find written proof either way?
  2. bgswartwood

    installing valves for n.g pipelines, before or after hyd. test?

    We test with the valves installed, 1/4 open. This allows for equal pressure around all surfaces of the ball and seal to prevent damage.
  3. bgswartwood

    Relief Valve Capacity

    We are being asked to change out all schedule 80 pipe nipples to Double X nipples. The ID of the nipples will be substantially smaller. If the nipple is on the inlet side of the relief, will it affect the capacity of the relief?

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