ISO 19973-4:2014 provides test procedures for assessing reliability of pneumatic pressure regulators by testing, using general test conditions and calculation method from ISO 19973-1. Standard applies to manually adjustable and remote-piloted pressure regulators, both relieving and non-relieving, but does not apply to pressure regulators that have a permanent bleed. Standard also specifies test equipment and failure criteria for tests to assess reliability of pneumatic pressure regulators.
This story is related to the following:Trade Associations