What is the maximum size of the bleeder valve opening on an LPG tank?

The maximum size of the bleeder valve opening on an LPG (Liquefied Petroleum Gas) tank is determined by safety and operational standards that govern the flow and release of gas in the event of a need for venting. A larger opening could potentially allow for a quicker release of gas, which is important in managing pressure and ensuring system integrity.

Drill Size 54 is the correct answer, as it corresponds to a specific size that balances the need for effective venting with safety measures. This size is established based on industry standards and best practices to mitigate risks such as overpressure and ensure compliance with regulatory requirements. Proper sizing helps to prevent issues that could arise from an improperly sized bleeder valve, such as over-pressurization of the tank or difficulty in managing gas flow during maintenance.

The other drill sizes mentioned do not meet the established maximum size criteria necessary for the bleeder valve’s opening. Using sizes larger than Drill Size 54 could pose safety risks, while sizes smaller than this do not provide adequate venting capability.