Design Features Summary

1.	Bi-directional inline bubble tight seal independent of line pressure.
2.	Multiple external bubble tight seals independent of line pressure.
3.	Direct mechanical three point adjustment independent of line pressure.
4.	Independent travel stops.
5.	Full encapsulation and retention of all leading edges of PTFE sleeve and top seal components.
6.	Full lip at port openings protects PTFE sleeve.
7.	Contoured waterway assures minimum flow turbulence characteristic.
8.	No body cavities to entrap flow media.
9.	Positive flow direction indication.
10.	Drilled and tapped flange mounting pads independent of cover and top seal assembly.

 

Other Features

Bi-directional flow.

Quarter turn operation

Nonlubricated

Self-cleaning on each operation.

Two way and multiport configurations

Special service and jacketed designs available.

All casting components traceable to mill test certificates.

Investment cast on all materials for sizes 1/2" - 10" (Class 150)

Investment cast on all materials for sizes 1/2" - 6" (Class 300)

Investment cast on all materials for sizes 1/2" - 6" (Class 600)

All castings meet level 1 casting specifications

Design Features

FluoroSeal®, Nonlubricated, Sleeved Plug Valves possess the state - of - the - art in PTFE fluorocarbon seated designs. With little or no maintenance and trouble free operation, a high integrity bubble tight seal is provided both inline and to atmosphere. The specific design features contributing to the superiority of this product are described, as a function of their individual purpose and engineering precautions taken to assure maximum service life.

PTFE fluorocarbon, utilized in the Fluoroseal sleeve and top seal components, is universally corrosion resistant being inert to all but a few rarely encountered chemicals. It is thermoplastic that can be used at a continuous service temperature of 400º F (204ºC) and much higher temperatures can be satisfactorily sustained for shorter periods. Having a very low coefficient of friction it is self-lubricating negating the need for any other lubrication. Since PTFE is susceptible to deformation as it is put under load and to cold flow, as it becomes more pliable at elevated temperatures, precaution must be taken to control this activity to the advantage of the intended purpose of the valve.

The Fluoroseal internal body configuration has been designed to totally contain all of the leading edges of the PTFE sleeve at the top, at the bottom and around the entire port opening adjacent to the waterway. Any tendency the sleeve has to grow is accommodated by relief areas, designed for this purpose, positioned at 90 degrees to the body port openings. The port defining metal lips protects the PTFE sleeve from erosion and any possibility of sleeve rotation within the body.

The waterway in the body has been designed with a contour providing a flow path that assures a minimum flow turbulence characteristic. The critical sealing areas circumferentially around the top and bottom of the sleeve and around the body port openings are maintained by means of an adjustable tapered plug compressing the PTFE sleeve over raised ribs.

The PTFE top seal components are similarly contained and protected from damage. A counter bore is provided at the top of the metal body to encapsulate the outside diameter of the formed PTFE diaphragm in conjunction with the formed metal diaphragm and to protect it from rupturing by regulating the amount of compression at this point. The inside diameter of the formed PTFE diaphragm, adjacent to the plug stem, is also contained by means of a unique lip design of the formed metal diaphragm preventing extrusion and maintaining the stem seal throughout variable service conditions. This unique formed metal diaphragm also provides a positive electrical ground between the plug and body eliminating the need for an extra component to fulfill this function as in the case of other valve manufacturers' designs.

Three point external adjusting bolts in the cover assures equilibrium to the compression of the stem and inline seals by imparting a balanced force through a metal thrust washer located under the cover above the formed metal diaphragm. This mechanism provides a multiple seal to atmosphere and a double (downstream & upstream) bi-directional inline seal.

Independent wrench stops are cast on the cover to limit the stroke at the open and close positions without endangering the integrity of the seal adjustment as in other manufacturers' designs. Parallel flats are machined on the sides of the plug stem providing positive indication of the direction of flow at all time, independent of other position indicators.

All major pressure containing components, body, plug and cover, of Fluoroseal valves, are fully traceable to mill test certificates assuring material authenticity. Quality levels are maintained through continual inspection and manufacturing surveillance of these and all other components. A concerted effort is made to conform to all regulatory authority requirements as where and when invoked, in keeping with Fluoroseal's pledge of quality first.