英国斯派莎克spiraxsarco减压阀
st be adequately sized to ensure that the only appreciable pressure drop occurs across the reducing valve itself. If the isolating valves are the same size as the reducing valve connections, they will incur a larger pressure drop than if they are sized to match the correctly sized, larger diameters of the upstream and downstream pipework.
If the downstream pipeworkorany connected plant is incapa
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