The WIKA L990.40 Threaded Diaphragm Seal features an internal 3.5in diaphragm with larger displacement and improved sensitivity to lower pressure ranges. It requires hydraulic fluid to transmit pressure to instrument. The instrument connection options include 1/4in and 1/2in NPT female. Suitable pressure ranges for the L990.40 include 10in H2O to 1500 psi.
Applications for the L990.40 include:
For assembly (direct assembly, via a cooling element or a capillary) with measuring instruments for low pressures and with differential pressure measuring instruments
For corrosive, contaminated or hot media
Filter monitoring
Level measurement
