SkoFlo technology and valves accomplish pressure-independent chemical injection declares this free six-page pamphlet.
Surface chemical injection metering valves and back pressure regulators are presented along with ROV-installable, remotely adjustable subsea systems rated to 15,000 psi.
Chemical injection models utilize a variable orifice design. They deliver 1 gpd to 40 gpm with entirely mechanical operation, except to adjust flow settings. The metering valves arecited as reliable and to require very low power, notes the literature.