The Aperflux 851 is a downstream gas regulator that is self-actuated and pilot operated for medium- and high-pressure applications. It is suitable for non-corrosive gases, particularly natural gas. It can be used in civil and industrial applications. It is a top entry design, which allows for simple routine maintenance without removing it from the line.
This model is highly accurate. The high range ability ratio, together with the fast adaptation to changes in the operating conditions, even in the presence of abrupt changes in the flow rate.