{"tema_id":"1335","string":"operating level of the piston           #01439","created":"2022-12-19 09:13:36","code":null,"notes":[{"@type":"Cataloger's note","@lang":"en-EN","@value":"reference: R110:1994 2.6.1 "},{"@type":"Cataloger's note","@lang":"en-EN","@value":"ID: 01439 "},{"@type":"Definition note","@lang":"en-EN","@value":"the level of the piston, with respect to a clearly defined part of the support column or the base of a pressure balance "}]}