Dear reader, Thank you for taking the time to answer my question. I am a brewer and technician at Brouwerij Troost in Amsterdam, Netherlands. We are currently using equipment made by your company. I have been trying to find spare parts for the butterfly valves in our system, but I can not find the correct ones at any of my suppliers. Especially the silicone rubber valve seals are hard to find. Do you also supply spare parts? Could you please provide documentation about butterfly valves DN32, DN40, DN50 and DN65. I need drawings with measurements, so I can determine which seals I have to order. I hope you can help me. Kind regards Jelle Aaij