WIDE APPLICATION - this 3325453 solenoid operator is designed to use with all G2 Optima Plus modules (identified by a blue module); For Sloan ECOS and SOLIS Flushometers DURABLE MATERIAL - oOur Valve 3325453 Solenoid Replacement is made of heavy duty steel, copper, plastic and rubber for great strength, wearing & corrosion resistace, deformation protection and long service life STABLE PERFOEMANCE - located inside the flush valve head and below the control module assembly, this solenoid valve is activated when the module triggers the flush cycle to begin, which moves and relieves pressure within the valve to initiate the diaphragm flush cycle DIRECT REPLACEMENT - manufactured to OEM specification to ensure best fit and easy installation, directly replace for part number 3325453 & EBV-136-A BUILT TO LAST - every part is carefully selected and tested, premium material provides great reliability in function, performance and quality. Durable & affordable solenoid operator to better upgrade your flushometers WIDE APPLICATION - this 3325453 solenoid operator is designed to use with all G2 Optima Plus modules (identified by a blue module); For Sloan ECOS and SOLIS Flushometers