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Safe indication of flow, clarity and color of extremely corrosive or ultrapure liquids.

Maximum viewing area with a full 360° visibility for dependable observation and inspection from a reasonable distance.

Full flow design; no corners to collect debris.

Designed to withstand reasonable external shocks.

No special hardware required for installation; completely assembled and pre-tested.
Wafer Style Sight Glasses
Unit of Measure
1 2 

Item #

Item Name

Connection Size

Connection Type

Body Material

Seal Material

GYW150V-PV N/A 1-1/2 Inch (in) National Pipe Thread (NPT) Polyvinyl Chloride (PVC) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 1-1/2 in N/A National Pipe Thread (NPT) N/A Polyvinyl Chloride (PVC) N/A Fluorocarbon (FKM)
GYW200V-PV N/A 2 Inch (in) National Pipe Thread (NPT) Polyvinyl Chloride (PVC) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 2 in N/A National Pipe Thread (NPT) N/A Polyvinyl Chloride (PVC) N/A Fluorocarbon (FKM)
GYW300V-PV N/A 3 Inch (in) National Pipe Thread (NPT) Polyvinyl Chloride (PVC) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 3 in N/A National Pipe Thread (NPT) N/A Polyvinyl Chloride (PVC) N/A Fluorocarbon (FKM)
GYWX400V-PV N/A 4 Inch (in) National Pipe Thread (NPT) Polyvinyl Chloride (PVC) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 4 in N/A National Pipe Thread (NPT) N/A Polyvinyl Chloride (PVC) N/A Fluorocarbon (FKM)
GYWX600V-PV N/A 6 Inch (in) National Pipe Thread (NPT) Polyvinyl Chloride (PVC) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 6 in N/A National Pipe Thread (NPT) N/A Polyvinyl Chloride (PVC) N/A Fluorocarbon (FKM)
GYWX800V-PV N/A 8 Inch (in) National Pipe Thread (NPT) Polyvinyl Chloride (PVC) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 8 in N/A National Pipe Thread (NPT) N/A Polyvinyl Chloride (PVC) N/A Fluorocarbon (FKM)
GYW150V-CP N/A 1-1/2 Inch (in) National Pipe Thread (NPT) Chlorinated Polyvinyl Chloride (CPVC) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 1-1/2 in N/A National Pipe Thread (NPT) N/A Chlorinated Polyvinyl Chloride (CPVC) N/A Fluorocarbon (FKM)
GYW200V-CP N/A 2 Inch (in) National Pipe Thread (NPT) Chlorinated Polyvinyl Chloride (CPVC) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 2 in N/A National Pipe Thread (NPT) N/A Chlorinated Polyvinyl Chloride (CPVC) N/A Fluorocarbon (FKM)
GYW300V-CP N/A 3 Inch (in) National Pipe Thread (NPT) Chlorinated Polyvinyl Chloride (CPVC) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 3 in N/A National Pipe Thread (NPT) N/A Chlorinated Polyvinyl Chloride (CPVC) N/A Fluorocarbon (FKM)
GYWX400V-CP N/A 4 Inch (in) National Pipe Thread (NPT) Chlorinated Polyvinyl Chloride (CPVC) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 4 in N/A National Pipe Thread (NPT) N/A Chlorinated Polyvinyl Chloride (CPVC) N/A Fluorocarbon (FKM)
GYWX600V-CP N/A 6 Inch (in) National Pipe Thread (NPT) Chlorinated Polyvinyl Chloride (CPVC) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 6 in N/A National Pipe Thread (NPT) N/A Chlorinated Polyvinyl Chloride (CPVC) N/A Fluorocarbon (FKM)
GYWX800V-CP N/A 8 Inch (in) National Pipe Thread (NPT) Chlorinated Polyvinyl Chloride (CPVC) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 8 in N/A National Pipe Thread (NPT) N/A Chlorinated Polyvinyl Chloride (CPVC) N/A Fluorocarbon (FKM)
GYW150V-PP N/A 1-1/2 Inch (in) National Pipe Thread (NPT) Polypropylene (PP) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 1-1/2 in N/A National Pipe Thread (NPT) N/A Polypropylene (PP) N/A Fluorocarbon (FKM)
GYW200V-PP N/A 2 Inch (in) National Pipe Thread (NPT) Polypropylene (PP) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 2 in N/A National Pipe Thread (NPT) N/A Polypropylene (PP) N/A Fluorocarbon (FKM)
GYW300V-PP N/A 3 Inch (in) National Pipe Thread (NPT) Polypropylene (PP) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 3 in N/A National Pipe Thread (NPT) N/A Polypropylene (PP) N/A Fluorocarbon (FKM)
GYWX400V-PP N/A 4 Inch (in) National Pipe Thread (NPT) Polypropylene (PP) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 4 in N/A National Pipe Thread (NPT) N/A Polypropylene (PP) N/A Fluorocarbon (FKM)
GYWX600V-PP N/A 6 Inch (in) National Pipe Thread (NPT) Polypropylene (PP) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 6 in N/A National Pipe Thread (NPT) N/A Polypropylene (PP) N/A Fluorocarbon (FKM)
GYWX800V-PP N/A 8 Inch (in) National Pipe Thread (NPT) Polypropylene (PP) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 8 in N/A National Pipe Thread (NPT) N/A Polypropylene (PP) N/A Fluorocarbon (FKM)
GYW150V-TF N/A 1-1/2 Inch (in) National Pipe Thread (NPT) Polytetrafluoroethylene (PTFE) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 1-1/2 in N/A National Pipe Thread (NPT) N/A Polytetrafluoroethylene (PTFE) N/A Fluorocarbon (FKM)
GYW200V-TF N/A 2 Inch (in) National Pipe Thread (NPT) Polytetrafluoroethylene (PTFE) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 2 in N/A National Pipe Thread (NPT) N/A Polytetrafluoroethylene (PTFE) N/A Fluorocarbon (FKM)
GYW300V-TF N/A 3 Inch (in) National Pipe Thread (NPT) Polytetrafluoroethylene (PTFE) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 3 in N/A National Pipe Thread (NPT) N/A Polytetrafluoroethylene (PTFE) N/A Fluorocarbon (FKM)
GYWX400V-TF N/A 4 Inch (in) National Pipe Thread (NPT) Polytetrafluoroethylene (PTFE) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 4 in N/A National Pipe Thread (NPT) N/A Polytetrafluoroethylene (PTFE) N/A Fluorocarbon (FKM)
GYWX600V-TF N/A 6 Inch (in) National Pipe Thread (NPT) Polytetrafluoroethylene (PTFE) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 6 in N/A National Pipe Thread (NPT) N/A Polytetrafluoroethylene (PTFE) N/A Fluorocarbon (FKM)
GYWX800V-TF N/A 8 Inch (in) National Pipe Thread (NPT) Polytetrafluoroethylene (PTFE) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 8 in N/A National Pipe Thread (NPT) N/A Polytetrafluoroethylene (PTFE) N/A Fluorocarbon (FKM)
GYW150V-PF N/A 1-1/2 Inch (in) National Pipe Thread (NPT) Polyvinylidene Fluoride (PVDF) Wafer Style Sight Glass with Fluorocarbon (FKM) Seal N/A 1-1/2 in N/A National Pipe Thread (NPT) N/A Polyvinylidene Fluoride (PVDF) N/A Fluorocarbon (FKM)
Unit of Measure
1 2