Plast-O-MaticPlast-O-Matic GYWX400V-TF GYWX Series 4 IN Sight Glass Wafer PTFE Body, Pyrex/Acrylic Wall Material, Double Wall, FKM SealItem #GYWX400V-TFSafe indication of flow, clarity and color of extremely corrosive or ultrapure liquidsMaximum viewing area with a full 360° visibility for dependable observation and inspection from a reasonable distanceFull flow design; no corners to collect debrisDesigned to withstand reasonable external shocksNo special hardware required for installation; completely assembled and pre-testedTrue Blue® Series GYW flow indicators are designed to indicate the presence or clarity of high purity or corrosive liquid in a piping system. For use with ultrapure liquids or chemicals compatible with acrylic. O-ring seals are used on Series GYW indicators allowing them to seal at extremely low pressures as well as high pressures. GYW flow indicators are full ported, eliminating any possible flow resistance. Pipe sizes are 1-1/2" through 8" NPT (40 mm through 200 mm). An optional fluttering device is available.Additional Documents: Specification Sheetper: EAQuantity: Add to CartRequest InformationConnection TypeWAFERMaterialPTFESeal MaterialFKMSeriesGYWXSize4 inType of productSight GlassManufacturerPlast-O-MaticWall MaterialPYREX/ACRYLICWall TypeDOUBLE WALLRelated Products Plast-O-Matic GYW300V-TF GYW Series 3 IN Sight Glass Wafer PTFE Body, Pyrex/Acrylic Wall Material, Double Wall, FKM SealItem # GYW300V-TFSize:3 inConnection Type:WAFERPlast-O-Maticper: EAQty: CompareFull DescriptionSeries GYW Double-wall sight glass for liquids compatible with Pyrex inner wall. 1 1/2" - 8" sizes, flange connections in PVC, CPVC, PVDF, PTFE, or polypro. ×