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...

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

Safe Blinding The Cam-Set® is a swing type line blind where the blinding plate travel is radial, compared to the sliding motion of the Cam-Slide®. It has a 3 bolt design allowing the spectacle plate to pivot about the center bolt. The Cam design allows for quick and smooth position changing. Cost Effective Fast Plate Movement Easy Maintenance In the 40 years since we invented the swinging type line blind we have delivered many types of variants to meet the changing market needs. We have designed the Cam-Set to act as an orifice plate, strainer, as well as integrating it into both proprietary...

Standard Cam-Set® Section View Spectacle Plate Body Stud / Nuts Seal Carrier Actuator Stem Part Description Standard Material Carbon Steel or Stainless Steel Spectacle Plate Stainless Steel Seal Carrier Stainless Steel Stainless Steel Actuation Stem Carbon Steel Stainless Steel or Monel Body Studs FFKM, EPDM, Buna-N, NBR, PTFE, Options Hastelloy®, Titanium or most alloys Other materials and seal rings are available upon request

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 inclined planes, one stationary and one rotating. The rotating cam has an arm attached which, once engaged by turning the handwheel and stem, moves the two cams apart or together as required. This creates sufficient space for the spectacle plate to move or to be locked in place. Operation Open Cam is clamped and line blind is in open (Thru) position....

Designs for Diverse Applications With over 50 years of line blind design and manufacturing experience, Fetterolf has a dedicated team that can work on customized designs to enable a variety of specialized uses for the Cam-Set®. Additional functions include time consuming tasks such as changing a strainer, orifice plate (illustrated below) or rupture disc. Cam-Set® with Counterweight Cam-Set® with Chainwheel For sizes over 12” the spectacle plate can become heavy and difficult to move. The addition of a counterweight makes this an easy one person operation for sizes up to 48”. Operating a line...

Common Installation Orientations Horizontal Pipeline Installation Vertical Pipeline Installation Counter Weight Horizontal Pipeline Recommended for sizes 14” and above Roller Support Vertical Pipeline Recommended for sizes 14” and above

Options As a valve and safety device, the Cam-Set® has a large variety of options that can be added. The most common are listed below. In addition to these, the Cam-Set® can be made in almost any material, including Hastelloy®, Titanium, and most alloys. Cam-Sets® 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 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 spills. The line blind...

Standard Cam-Set® Dimension Table D G CAM-SET® DIMENSION TABLE (ASME 150#) in mm SIZE (ASME) Above dimensions are indicative only For other pressure classes and special designs, please contact [email protected]

Fire Safe Cam-Set® 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 Testing Fetterolf line blinds are designed and tested in accordance with API 607. The tests require a 30 minute burn period while pressurized, after which the line blind is...

Engineering Standards, Design Verification, and Certification All line blinds are designed, constructed and tested per the latest standards. We operate under an ISO 9001:2015 quality system to ensure all products are designed and manufactured to the highest quality. The Cam-Set® incorporates many material and construction safety features. They are built to meet or exceed ASME B16.5 standards. The thickness of the Cam-Slide® spectacle plate is equal to or greater than that required by API 590 (ASME B16.48). Engineering Standards ASME Standard Valves- Flanged, Threaded & Welding End Steel Line...

Application Examples Steel Mills With the advent of stricter regulations in the British steel industry, fast acting line blinds became a de facto requirement. Fetterolf provided over 1,000 blinds to steel mills during this period- one of which is shown right (18”-150#) on a blast furnace line. This size is equipped with a counterweight which enables it to be changed in under 60 seconds, no bolts need to be removed, no crane or lifting equipment is required and the unit can be locked in place for safety reasons. Petrochemical Fetterolf Provides line blinds for chemical and petrochemical environments....