Frequently Asked Questions
A slide plate is a component that can be fabricated from a variety of materials including PTFE, 25% glass filled, graphite, Bronzphite®, Marinite®, and stainless steel. The purpose of slide plates is to produce a low-coefficient of friction between a stationary support element and the moving pipe support component to reduce the forces generated as a result of pipe deflections during operation.
Graphite Slide Plates
A bearing plate is also referred to as a slide plate. It is a component that can be fabricated from a variety of materials including graphite, PTFE, 25% glass filled, stainless steel, and bronzphite. The purpose of slide plates is to produce a low-coefficient of friction between a stationary support element and the moving pipe support component to reduce the forces generated as a result of pipe deflections during operation.
PTFE, 25% Glass Filled Slide Plates
The PTFE is generally used as a slide plate either affixed to the supporting steel or the bottom of the pipe saddle. This PTFE component acts to provide a low coefficient of friction between the saddle and the supporting steel.
Stainless Steel Slide Plates Affixed to Bottom of Pipe Saddle
The coefficient of friction of the glass filled slide plates is 0.06 for loads greater than 500 psi static.
25% Glass Filled Glass Slide Plate
The coefficient of friction of polish stainless steel slide plate is 0.1.
Stainless Steel Slide Plate
The reason for the use of slide plates is to reduce thecoefficient of friction between two surfaces. So to use an unpolished steelsurface, defeats the purpose of reducing the coefficient of friction.
Glass Filled Slide Plate
In general yes. The lip dimension on the slide plate is intended to isolate the PTFE pad from the outer edge of the base plate. This helps to dissipate the heat generated during the welding procedure, however, it is also recommended that a “skip” weld procedure be followed to insure that high temperatures are not seen at the PTFE pad.
PTFE, 25% Glass Filled Slide Plates Bonded to Stainless Steel Backing Plates
Yes, but it is standard forthe upper slide plate to be larger and the lower plate to be smaller which helps to keep them clean.
Yes. We do recommend stainless steel slide plates over the galvanized material for it's longevity for the offshore application.
Spectacle Blinds
You would need to use the insulation type slide plate, ie: marinite, to insulate from the heat with PTFE on top of the structureto absorb the impact load if you have any steam hammers.
Slide Plate Assemblies with 2 3/4″ Marinite Blocks
We have only seen this in applications when the upper slide plate is the same size as the lower slide plate. We recommend that the upper slide plate is larger than the lower plate in order to avoid this occurrence. As long as this bottom slide plate is not exposed, this problem is usually a non-issue.
PTFE, 25% Glass Filled Slide Plates
The PTFE standard assembly is a PTFE to PTFE and10 gauge backing plate combination which as a whole is 7/16″ thick. Some customers require the 11/32″ application of PTFE and this thickness can only be achieved when you utilize a stainless steel upper slide plate element.
Orifice Plates
We would recommend that you use the PTFE, 25% Glass Filled, slide plate if it is within the recommended temperature range(up to 400 degrees)
PTFE, 25% Glass Filled Slide Plates Bonded to Stainless Steel Backing Plates
Expansion rate between the slide plate and backing plate is not taken into account because the area of the slide plate is generally not large enough to experience any of these effects.
PTFE, 25% Glass Filled Slide Plates/p>
Consider the bottom surface is always covered bythe top slide plate and is really never exposed to the elements. The life span should not be a consideration unless they are mechanically damaged
PTFE Slide Plate Installed in the Field
PTFE slide plate material can be used in bothcombinations.
PTFE, 25% Glass Filled, Slide Plates
Graphite material is recommended for temperatures higher than 400 degrees F for slide plates.
Graphite Slide Plates