| 摘要 |
<p>A method for controlling quality of sealing in an HVAC system portable piping structure is provided. The system includes a valve, a piping structure coupled to the valve. The method comprises pressurize the piping structure with a gas at greater than sea-level pressure, and sealing the gas in the piping structure with the valve. The gas pressure within the piping structure is determined. If the pressure within the piping structure meets a specified pressure, the portable piping structure is approved for incorporation into an HVAC system. The method improves the reliability of an HVAC system that includes approved structures. The piping structure may be assembled off-site or on-site.</p> |
