The Mark 95AA sanitary air augmented back pressure regulator with the same line sizes, CV choices, seats, low build up characteristics, and stability of the standard bolted bonnet Mark 95, but with an advantage. By connecting an air pressure signal to the 1/4” FNPT dome fitting via an air regulator or I/P, the set point can be changed remotely by “sending an air signal instead of a technician”. The Mark 95AA gives users the ability to change pressure set points. Adjustments can be made with air pressure instead of, or in conjunction with, manual adjustment of the spring force to any point in excess of the springs minimum set point (2 psi on a 3/4″ – 1” Mark 95, 3 psi on a 1-1/2”, and 5 psi on a 2”). Users adjust the regulator’s spring to the lowest set point or to the lowest set pressure that the regulator will normally operate at, and use air pressure to charge the set point. To lower the set point to it’s previous value, the pressure is reduced in the same manner.
The Mark 95AA is used in conjunction with a Steriflow self relieving I/P for control via PLC or DCS, or with a JSRLF regulator with self relieving option (for example – for remote control by valve mounted on wall or panel outside of a clean room).
The Mark 95AA Series comes standard with the Jorlon diaphragm. If you are looking to extend the life of your regulators and reduce the overall cost of ownership, then look no further than Steriflow Valve’s Jorlon diaphragm. Jorlon is a structurally modified PTFE with FDA and USP Class VI approval.
Jorlon is a proprietary modified PTFE material that positively impacts regulator reliability, performance and service life. Since its inception, several thousand Steriflow valves with Jorlon diaphragms have been supplied to customers into systems which have been validated by the FDA. Jorlon has been specified in biopharm applications including (but not limited to) WFI, clean steam (up to 100 psig), buffers, acids, cryogenic liquids, clean utility gas, biological intermediates, and final process fluids. Jorlon is warranted for a lifetime of use in our Mark 95, Mark 96, Mark 96AA and Mark 978 Series.