GRAPHILOR® Graphite Rupture Discs,ACCESSORIES

+ VACUUM SUPPORTS (Not Available with Series 6)

Membrane (Series 1) and Single Piece (Series3) discs with burst ratings of 20 psig or less that could operate under vacuum conditions require supports to prevent implosion of the disc. Discs operating above 20 psig are self-supporting and do not require additional support for vacuum service. Vacuum supports are supplied in two types:

The above supports are cemented to the single piece discs at the factory and cannot be added in the field if required at a later date. In the case of membrane type discs, vacuum supports can be added in the field at a later date since the holder is designed to accommodate them as a seperate item.

+ HIGH TEMPERATURES

For applications where disc exposure is in excess of 300°F, the use of an insulating spacer is recommended.

+ ARMORING

A steel armor ring can be provided on the outer circumference of single piece discs and is generally used for higher pressure applications. A disc with burst ratings greater than those listed in the table below, must be armored. Both carbon steel and stainless steel material is available for armoring.

Size Disc	Burst Rating
1" thru 3"	150 psig
4" thru 6"	100 psig
8" thru 10"	75 psig
12" thru 24"	50 psig

+ FLUOROPOLYMER COATING

Temperature fused coating on the process side or both sides of single piece or membrane discs is available for additional corrosion protection, as well as providing a non-stick surface to assist in preventing chemicals from adhering to discs and altering the burst pressure.

+ TFE SHIELD (Series 6 Discs)

If single piece discs are to be used in a highly corrosive service, particularly in the presence of oxidizing chemicals such as sodium hypochlorite, sulfur trioxide, sodium chlorate, then a TFE Shield or Series 6 Disc should be specified.