ESCO Technologies Inc. has acquired Crissair Inc., located in Palmdale, CA. Crissair, with annual revenues of approximately $27 million, is a manufacturer of high-quality hydraulic, fuel, and pneumatic system components for the aerospace industry. Terms of the deal were not disclosed. Crissair supplies fluid control components that are deployed in a variety of major aircraft platforms, serving both the OEM and aftermarket requirements of its prime customers. The company will join PTI Technologies Inc. and VACCO Industries as part of ESCO's Filtration and Fluid Flow segment.