FEATURES * Automatic drain for standard or operatory sink 1-1/2" tailpiece * Connects to central vacuum system and eliminates conventional plumbing drain * Allows installation where a gravity drain is not available or practical * Includes: Sink Adapter (RPI Part #VPA084) and Cuspidor Drain Valve (RPI Part #VPV083) * Also available: Diaphragm (RPI Part #VPD086) and Bowl Kit (Long) (RPI Part #VPK088) FITS: Standard or Operatory Sinks MODEL(S) THIS PART FITS: All VADAâ„ Traps NOTES:Adapts all OEM sinks to a central vacuum line when there is not a normal gravity drain available.