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Item # SLD40, Buckaroos Sliding Saddles
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  • The engineer’s solution to hanger support on moving pipes.
  • Top saddle moves with the pipe during pipe movement at startup or beyond.
  • Fast and easy to install.
  • Very low material cost versus roller hangers.
  • Made from heavy gauge carbon steel (18, 16, 14 and 12 gauge).
  • Protects people and objects below from Saddles falling to the ground.
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    Specifications  · "Sliding" Feature  · Recommended Support  · Safety  · Value Engineering  · Allowable Linear Movement

    Specifications

    Saddle O.D.
    		4.0 in

    Bottom Length
    		8 in

    Upper Length
    		12 in

    Gauge
    		18


    "Sliding" Feature
    The PTFE creates a very low coefficient of friction (µ) between the upper and lower saddles. Hence, the upper saddle is allowed to slide easily across the lower saddle as the pipe moves. Sliding Saddles are ideal for any system that experiences thermal growth such as hot water, chilled water, steam, ammonia refrigeration, medical gas or dual-temperature.


    Recommended Support
    Buckaroos recommends installing Sliding Saddles in combination with a rigid insulation material as opposed to wood block supports. For operating temperatures of -290°F to 250°F a rigid, phenolic foam is best. From 250°F to 1200°F, calcium silicate should be specified.

    The traditional method of insulating at hanger locations with an insulation saddle and a supporting wood block is not effective when linear movement takes place in the system. As the pipe moves, the focus of where the weight of the pipe rests may change. The hanger may lose its centered position and relocate closer to either edge of the saddle. When this occurs, the wood block is no longer supporting the weight and the fiberglass insulation is crushed. The area loses its insulation properties, the vapor barrier may be penetrated, and the saddle sometimes falls to the ground, creating a safety hazard. A combination of rigid insulation inserts and Sliding Saddles will provide even weight distribution with or without linear movement.


    Safety
    As previously noted, traditional methods of insulating at hanger locations can provide an opportunity for the saddles to fall from the hanger and affect the safety of anyone below the pipe. Galvanized sheet metal falling from above can be compared to a knife or blade. Properly supported Sliding Saddles eliminate this hazard. The upper saddle will be able to move linearly without the fear of anything falling out of place.


    Value Engineering
    Sliding Saddles are the ideal value engineering solution to costly, roller-style hangers, which have a tendency to rust. A combination of Sliding Saddles, rigid insulation and clevis hangers is economical and significantly more efficient. Each Sliding Saddle is labeled with a Sliding Saddle Sticker for easy recognition on the job site.


    Allowable Linear Movement
    The Sliding Saddle allows for up to 4 inches of linear movement. With the theory that the hanger position will remain stable, the insulation insert and plain saddle must rest on the Short-Rib Saddle such that there is space available in the direction that movement is desired. The upper saddle shall not move past the end of the lower saddle at any time. If the product is being used on a static system, the product should be installed in a centered position over the hanger. The design engineer is responsible for determining the positioning of the saddles based on the desired linear movement allowance. Sliding Saddles are not meant to take the place of pipe guides. Custom sizes are available on a made-to order basis for movement greater than 4 inches.


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    Buckaroos Sliding Saddles Brochure
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