Krausen
Mechanical
- Jan 1, 2013
- 263
Curious forum's opinions or experiences on this...I work at a refinery with an HF Alky unit. We've had many HF acid leaks in past with valve bolted bonnets, particularly with small bore gate valves. I would like to change to welded bonnet (threaded & seal-welded) style small bore gate valves going forward when we replace them. If I have issues with availability, I would like to request any new bolted bonnet gate valves to have a Kammpro style (Monel core) bonnet gasket, instead of spiral-wound or RTJ type. Talking with one major valve mfg (Velan), they claim they do not offer any of their small bore bolted bonnet gate valves with Kammpro gaskets. They can only offer with spiral-wound to their company standard. Velan does offer welded bonnet small bore gate valves, but it appears their lead times on these are very long.