Types of Regulators. This standard applies to individual gas appliance pressure regulators, which are not a part of a combination control (see Part V, Definitions), constructed entirely of new, unused parts and materials, hereinafter referred to as regulators, intended for application on individual gas appliances.
This standard also applies to negative gas appliance pressure regulators (see Part V, Definitions). The performance of negative pressure regulators is covered under Part III of this standard.
