What is the maximum allowable opening at the inlet connection of pressure gauges?

The maximum allowable opening at the inlet connection of pressure gauges is established to ensure accuracy and safety in pressure measurement. When pressure gauges are installed in a system, they need to provide reliable readings without the risk of blockage or contamination that could result from larger openings.

A typical standard for pressure gauge inlet connections indicates that the opening should not exceed .055 inches. This size allows for the proper flow of fluid through the gauge while minimizing the potential for buildup of debris or other materials that could affect gauge performance.

Understanding the significance of this measurement is vital for maintaining system integrity and ensuring that pressure readings are both accurate and reliable over time. A smaller opening can lead to better filtration of the measuring medium, which is especially important in applications where the fluid might contain particulates or impurities.

Compliance with this standard helps prevent malfunctions or failures in pressure measurement that could lead to unsafe conditions in various applications, from industrial machinery to vehicle fuel systems utilizing compressed natural gas.