Line Blind Valves
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Line Blind Valves Cam-Set ®, Cam-Slide ®, Cam-Goggle ® & Stacey ™

Safety First Plant and personnel safety is a central theme for socially responsible and safety conscious companies. Following a series of fatal accidents across the globe, regulation now mandates certain minimum technical precautions in many industries. As a result the ability to isolate lines and ensure absolute downstream flow shut-off is essential. Traditional Approach Traditional line blinding methods such as inserting metal plates with a gasket between flanges assure safety, but are time consuming to open or close. Larger size blinds require numerous people or expensive equipment such...

The Modern Alternative – The Cam-Set ® & Cam-Slide ® Modern line blind systems such as the SchuF Fetterolf Cam-Set or Cam-Slide change the installation of the blind into a one man operation taking only minutes to complete. Downstream safety is assured. In all sizes, the Cam-Set/Slide makes line blinding convenient, fast and safe. Cam-Set / Slide ® – Key Features ■ Absolute positive shut-off ■ Fast change ■ One man operation ■ No flange or line spreading ■ No special equipment required Convenient, Fast, Safe ■ Conforms / exceeds ASME B16.5 and API 590 ■ Unique safety features The Cam-Slide...

Operation How the Cam-Set ® and Cam-Slide ® work The internal cam system is actuated via a single screw (or hand wheel) which is perpendicular to the axis of the pipe. When the screw is rotated a movable inclined plane slides against a fixed inclined plane, moving the seal carrier away from the spectacle plate, thus freeing it to be moved to a new position. The working of the Cam mechanism is illustrated below with drawings of a Cam-Set. The Cam-Slide operates in exactly the same way with the exception that the spectacle plate slides from left to right or vice versa rather than swinging. 1)...

Cam Product Range The Cam product range includes the Cam-Set, Cam-Slide and Cam-Goggle valves. They all use the unique and proven Cam mechanism. Cam-Set ® – Swinging Line Blind Valve – Model 81 FC The Cam-Set (Model 81 FC) is a swing type of quick acting line blind. It has a three bolt design and a triangular body. It is appropriate for applications that require fast blinding turnaround and that do not exceed 1500# pressure class. It can be made as a standard design up to 48”(DN 1200). Cam-Slide ® Variants The Cam-Slide is also available as a non spill line blind (Model 81 BS), in a compact...

Cam-Set ® and Cam-Slide ® Options The Cam-Set/Slide comes with many options to match almost every requirement or operating environment. This includes a wide variety of seals and seal materials. All seals in a Cam-Set/Slide line blind can be replaced without removing the line blind from the piping system. Line blinding using the Cam-Set/Slide ® can be achieved by one man on one side of the pipeline, without the necessity of multiple spreader bolts or a crane. The sealing rings themselves are protected within the body of the blind, but can also be placed in the spectacle plate should regular...

Drawing and Dimension Table for Cam-Set ® Body Bolt Spacer Sealing Actuator Actuator Lever Actuator Screw Assembly Seal Ring Seal Ring Seal Ring Seal Carrier Spectacle Plate Assembly Grease Fitting Flange 150 ASME Standard Hand Wheel Body Bolts Body Pipe Cam-Set front view Description Body Flange Cam-Set side view All dimensions above are in mm for ASME class 150 # unless otherwise stated. Alternative Cam-Set models are available on request.

Drawing and Dimension Table for Cam-Slide ® Description Body Body Pipe Body Bolts Body Bolt Spacer Sealing Actuator Actuator Lever Seal Ring Seal Ring Seal Carrier Spectacle Plate Assembly Grease Fitting Flange 150 ASME Standard Cam-Slide side view Seal Ring Cam-Slide front view Actuator Screw Assembly All dimensions above are in mm for ASME class 150 # unless otherwise stated. Alternative Cam-Slide models are available on request.

Cam-Goggle ® Valve Goggle valves are very similar to line blind valves. They are generally used in Gas Blast Furnace or very low pressure applications (less than 1 bar), often have enclosures and can be made up to 120” (DN 3000). Open and Closed Models There are two types of Cam-Goggle valve available – open and enclosed types. The open type is for all intents and purposes no different than a line blind valve with the exception that it may be specified according to operating conditions rather than to ASME pressure class. This is an important factor, particularly for large size valves where...

Cam-Slide ® Overview Operation Spectacle plate movement is achieved in two simple steps - the first hand wheel operates the internal cam mechanism. The hand wheel releases the pressure on the seal tight internal o-ring which in turn enables the second gear actuated hand wheel to move the spectacle plate from the closed to the open position. For illustrative purposes the right hand enclosure or tank is shown without the front plate wall and the spectacle plate is coloured yellow. 48"Cam-Goggle Valve in the open position The tank enclosures are mounted on a rail beam and rollers which enables...

Cam-Set ®, Cam-Slide ®, Cam-Goggle ® Specifications Description Pressure class Cam-Goggle to DN 2500 (100”) Cam-Slide to ASME 2500# Body material Carbon steel 316 stainless steel; others on request Spectacle Plate Stainless steel Duplex, Hastelloy, Alloy 20, Inconel, Nickel, Monel & Titanium Carbon steel Carbon steel 316 stainless steel; others on request Viton, Buna-N Aflas, Teflon, Nordel, Chemraz, Kalrez and others depending on application Up to 800 ° C / 1472 ° F with special design Cam-Slide Pipe Connection Drain/Purge Connection Line drain, purge or sampling valve combinations are...

Stacey ™ Line Blind System The Stacey is a modern line spreading line blind system. It has a number of advantages over conventional blind plates such as ease of use, one to two man operation, absolute shut off, and is relatively quick to use. In this respect the Stacey can be changed in five to ten minutes depending on size and can break any crust build-up in or on the blind. and a wide range of materials. The multiple bolts expand the list of possible sealing materials for service temperatures from cryogenic to elevated. They are a viable alternative to the Cam-Set when flexibility and...