What is the maximum number of P/V valves allowed on a Healy system?

The maximum number of P/V (pressure/vacuum) valves allowed on a Healy vapor recovery system is three. This configuration is essential as P/V valves help maintain appropriate pressure within the vapor recovery system, regulating it to prevent excessive build-up or vacuum that could potentially cause a release of vapors.

Having three P/V valves enhances the system's ability to handle variations in pressure and permits redundancy, increasing safety and operational reliability. This limit is set to ensure that the system operates efficiently while also adhering to regulatory standards designed to protect both the environment and public health. Therefore, adhering to this number of valves is crucial in the design and installation of the Healy vapor recovery systems to ensure optimal performance and compliance.