LF20-VVacuum pressureswitch Dimension in:mm LF20-V Order Ref NO LF20-V -4 11111 -20"Hg ABC DEF Pressure setting: 20"Hg LF20-V vacuum switch is specifically designed to stand up to extended duty applications. This switch is factory set. It features a fluorosilicone rubber diaphragm for compatibility with a wide variety of fluids, and various terminations including a Metri-Pack connector that forms a tight seal when connected. Among the outstanding design benefits are its durable construction, compact size, and enhanced set point integrity.