J-Series Valve on Fermenter Sparges Ammonia Gas

May 18, 2018 by Karl Lutkewitte

Not all valves in pharma and biopharma plants are for hygienic or sterile applications.  There are a lot of installation opportunities for other Richards Industries valve brands. 

Shiva Kumar, the Manager of Process Engineering at Edge Solutions, our representative in south India, relayed the following story to us.

A local Biotech company producing enzymes, sparges ammonia gas into their fermenters to control the PH of the broth. They had been using a competitor’s stainless steel PRV, but found they had to repair or replace the valve every 6 months. Upon disassembly, they discovered that the PRV’s stainless diaphragm was corroded to the point that the ammonia gas leaked into the bonnet. This complicated, and ultimately disqualified a repair because the ammonia gas mixed with moisture (in the air) in the bonnet and corroded the valves internal components rendering it unrepairable.

About 10 months ago, Shiva suggested that the customer try a LowFlow J-series valve with JorlonTM diaphragm.  The LowFlow model JRH was perfectly suited for this non-sterile application near the ammonia source.  The LowFlow JRH was installed over 6 months ago, and Shiva reports it is working fine, has not leaked, and that there is no corrosion.  


Karl Lutkewitte
Karl Lutkewitte
Steriflow Valve Product and Sales Manager

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