Safe, Fast, and Convenient Blinding product lines connected to reactors, vessels or tanks is a business critical procedure in most chemical, petrochemical, tank storage, refinery or pharmaceutical plants. No Spreading of Pipe Required Visible Position Indicator Fast acting line blinds ensure the safety of personnel engaged in maintenance and operations. They provide 100% positive isolation and when used in tandem with isolation valves provide the highest level of plant and personnel safety. Fast, One-Person Operation Minimum Maintenance Available in CS, SST, and most Alloys Product Choice The...

Swinging Types Sliding Types Cam-Set® with Counterweight - 81FC-* High Temperature Cam-Slide® - 81HS Cam-Set® with Strainer - 81FC-* Cam-Slide® with Rupture Disc - 81CS-* Stacey® Line Spreading Blind - 81FS * to indicate model varia

The Cam-Slide® is a sliding type line blind where the blinding plate travel is linear, compared to the swinging motion of the Cam-Set®. The Cam design allows for quick and smooth position changing. The Cam-Slide® features a multi-bolt design allowing for convenient operation with more compact face to face dimensions. The additional body bolts make this style ideal for higher pressure applications. Adaptable Design The rectangular body of the Cam-Slide® along with the linear plate movement make the design more adaptable for different variations. Apart from its standard design the Cam-Slide® also...

Standard Cam-Slide® Cutout Spectacle Plate Seal Carrier Position Stop Cams Position Indicator Actuator Stem Body Body Stud / Nuts Part Description Carbon Steel or Stainless Steel Spectacle Plate Stainless Steel Seal Carrier Stainless Steel Stainless Steel Actuation Stem Carbon Steel Body Studs FKM (Viton), FFKM, EPDM, Buna-N, NBR, PTFE etc Other materials and seal rings are available upon request Options Hand Wheel Extensions Locking Device Limit Switches Drain/Vent ports Spectacle Plate Covers to Protect Seals Compact Design (integral tapped end flange) Rain/Dust Shield Torque Limiter

Operation of Standard Cam-Slide® Depressurize and drain line before use Turn hand wheel counterclockwise to unclamp spectacle plate. Indicator will be in unclamped position (below) Slide spectacle plate from thru to blinded position 3 Turn hand wheel clockwise to clamp spectacle plate and seal line blind. Indicator will be in clamped position (below) Cam Mechanism Principle The Cam product line consists of line blinds that DO NOT require spreading of the pipeline in order to change spectacle plate position. A special cam mechanism enables this. The cams are made from two separate components with...

Fire Safe Cam-Slide® Fire safe designs are often a mandatory requirement in the oil, gas, chemical, and petrochemical industries. These designs are meant to limit the amount of potential damage done in the event of a fire. For critical medium or enhanced fire security an internal bellows can be added to eliminate internal seals. Standards such as API 607 exist to ensure designs meet these stringent leakage amounts. Fire Safe Dual Seal Design Elastomer Primary Secondary Graphite Pipe Seal Face Seal The fire safe design functions in exactly the same way as the standard Cam-Slide®. It can be operated...

The Non Drip Cam-Slide® is the ideal blinding solution where pollution is strictly prohibited. Fast, Safe, & Clean This is achieved by either adding an enclosure underneath the body of the line blind (Non Drip Cam-Slide®) or by enclosing the sides of the blind body (in the Half or Full Plate Design). Reduced face to face dimensions Direction Indicator for open/closed (thru/blind) No drips during blinding process Vertical plate movement reduces space required between pipelines 3 Designs to choose from Absolute positive shutoff Actuated Non Drip Cam-Slide® Position Indicator for clamped/unclamped...

High Temperature Cam-Slide® Model 81HS The High Temperature Cam-Slide® is a fast acting line blind designed to withstand critical service applications with temperatures up to 1500°F (815°C) in non-oxidizing environments. This design includes a bellows, spiral wound gaskets or engineered graphite seal rings. No line spreading is required, and the seals can be replaced quickly and conveniently. The body and internal moving parts are reinforced to account for temperature related creep stress, metal fatigue and deflection. Load Modeling for Safety Finite Element Analysis for stress and deflection...

Custom Designs With over 50 years of line blind design and manufacturing experience, Fetterolf has a dedicated team that can work on customized designs to enable special face to face dimensions or new uses for the Cam-Slide®. Additional functions include time consuming tasks such as changing a rupture disc, strainer, or even an orifice plate (illustrated below). Given its adaptable design, the Cam-Slide® has an infinite number of variations and possibilities. Cam-Slide® with Rupture Disc Cam-Slide® with Orifice Plate Standard Cam-Slide® Cam-Slide® with Strainer Compact Cam-Slide® (integral tapped...

Common Installation Orientations The recommended installation for horizontal pipelines. The spectacle plate rests on a set of guide rollers for smooth horizontal plate movement A vertically actuated plate may be preferred where space is limited on either side of the pipeline. An actuator with handwheel can be provided for easy vertical actuation of the spectacle plate. Guide rollers and spacers center the plate and allow smooth plate movement when installed in vertical pipelines. The seal side body should always be on the top side in this configuration.

Options As a valve and safety device, the Cam-Slide® has a large variety of options that can be added. The most common are listed below. In addition to these, the Cam-Slide® can be made in almost any material, including Hastelloy®, Titanium, and most alloys. Cam-Slides® can be jacketed or have special coatings for offshore or other severe service applications. The most common options are shown below. Drain / Vent Ports Lockout Device Limit Switches Drain ports (with valve) or vents can be added on one or both sides to drain the line blind and/or line prior to switching, to minimize potential...