Specifies requirements for DN¿¿80 piston-type vacuum interface valves for municipal sewer system.RECONFIRMATION NOTICETechnical Committee WS-022 has reviewed the content of this publication and inaccordance with Standards Australia procedures for reconfirmation, it has beendetermined that the publication is still valid and does not require change.Certain documents referenced in the publication may have been amended since theoriginal date of publication. Users are advised to ensure that they are using the latestversions of such documents as appropriate, unless advised otherwise in thisReconfirmation Notice.Approved for reconfirmation in accordance with Standards Australia procedures forreconfirmation on 23 December 2015.The following are represented on Technical Committee WS-022:Australian Chamber of Commerce and IndustryAustralian Industry GroupAustralian Stainless Steel Development AssociationAustralian Water AssociationEngineers AustraliaInstitute of Instrumentation, Control