Va-2000 series svrsfeatures:vac-alert model va-2000 svrs unit reacts in less than a second to quickly release dangerous pump suction vacuuma totally mechanical non-electric safety system the va-2000 svrs is easy to install adjust and testvac-alets s fail safe design is manufactured with only engineered plastics and type 316 stainless steel for long life and reliable servicethe va-2000 svrs provides a critical layer of protection against body or limb drain suction entrapmenttests conducted by independent third party laboratory demonstrate that vac-alert s model va-2000 meets or exceeds the performance requirements set by iapmo igc 160-2002 for suction lift applicationsthe va-2000 svrs is backed by a 3 year limited manufacturer s warranty