Line Blind Valves – Cam-Set, Cam-Slide & Stacey
SchuF Fetterolf designs and manufactures a fast, easy to use and safety conscious Line Blind Valve range. They are often refered to as spectacle blinds, figure of eights, or blinding systems.
Line Blind Valve - Cam-Set, Photo: ©SchuF
Industry Using Line Blinding Systems
Their primary use is to completely close off the downstream portion of a pipeline in a safe way. They are frequently found in the Petrochemical, Steel, Pulp and Paper, Maritime and Oil & Refinery industries. They are often refered to as spectacle blinds, figures of eight, spectacle plates or paddle blinds.
Line Blind Valve Applications
Positive pipeline close/off is vital in many piping systems to assure safety of personnel working on downstream equipment, particularly when flammable, toxic liquids or gases could seep past a closure. When visible proof of shut/off is necessary, a line blind is mandatory to comply with plant safety regulations. Available in three variants as Cam-Set, Cam-Slide or Stacey Line Blind Valves.
|Cam-Set Side View||Cam-Set Closed|
SchuF Line Blinds, Photo:©SchuF
Key Characteristics of the SchuF Cam-Set
- Absolute positive Shut-Off
- No spreading of pipe required
- Seal unaffected by piping misalignment
- Simple, one man, spectacle changing from one side of the line
- 316 SST as standard, other materials upon request
- Special anti corrosive coatings such as epoxy, polyurethane and Sermetel ceramic are available if required
Spectacle Blind Valve Sizing
The Fetterolf Cam-Set Line Blind Valve is available in sizes ranging from 1 to 48 inch (larger on request) and can be supplied in 150, 300 and 600 ASME ratings. Other sizes and pressure ratings are available on request.
Cam-Set Line Blind installed in a refinery and offshore on a FPSO
Materials used in Line Blind Valves
Line Blinds are available in carbon steel, stainless steel (316 SST) as standard. Others materials are application and request dependant.
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