If you have questions about our products, Fill out the form below and we will answer any questions you have. Tips: Fields marked with*are required. Bently Nevada 3500/77 143729-01 Cylinder Pressure I/O Module Introduction The Bently Nevada 3500/77 143729-01 Cylinder Pressure I/O Module is designed to monitor cylinder pressure in reciprocating machinery such as pumps, compressors, and engines. As part of the Bently Nevada 3500 Series, this module *Your Name: *Your Email: *Your Name: *Vdcode: Submit