ARAMIDE (KEVLAR® ) PACKINGS

ARAMIDE (KEVLAR® ) PACKINGS

Construction

: High strength organic aramide (aromatic polyamide) synthetic yarn impregnated with PTFE & lubricated with a special high temperature lubricant.

Technical Parameters:

Temperature

: -240oC to +260oC

pH Range

: 2-12

Pressure

: 250 Kg/Cm2

Velocity

: 12 Meters / Second

Water

Acidic Gas

Concentrated Alkalis

 

Mineral Oil & Grease

Steam

Volatile Hydrocarbon

 

Solvents

Paint Varnish

 

Hydrogen

 

Neutral Solutions

Amines & Nitrates

Bitumen

Oxygen

 

Concentrated Acids

 

Synthetic oils

Abrasive media

Recommended Limited Recommendable

INSTALLATIONS INSTRUCTIONS FOR PACKINGS

1When rings are to be formed from continuous length of packing, spirally wrap the packing around a rod of diameter equivalent to the valve spindle. Cut the required number of rings to fill the packing space, with a sharp knife to obtain good butt joints.
2 Remove all old packing carefully.
3 Clean properly all the surfaces that will be in constant contact with the packing and if possible apply lubricant. Check gland and neck bushes and spindle or shaft surface for wear and repair if necessary.
4 Place the first ring around the spindle or shaft by opening to an “s” configuration to ensure that the ring is not damaged.
5 First partially enter both ends of the first ring simultaneously into the stuffing box and then insert the remaining part of the rings. After that firmly push it to the bottom of the stuffing box.Assist with split sleeve
6 Similarly insert other rings and ensure that the joints are at 900. N.B: rings must be fitted individually and not as a set

FOR PUMPS APPLICATIONS

1When all the rings have been fitted to fill the stuffing box, fit the gland follower and tighten the gland nuts to level the gland spigot. Tighten up to finger tightness only, then turn nut by one or two thread, loose it back & again tighten up to finger tightness again. (when storage is anticipated the gland should be left slack.) DO NOT OVERTIGHTEN.
2Run pump up to operating speed for 10 to 15 minutes. If there is no leakage, stop pump, and loosen gland further. Repeat until leakage occurs. The controlled leakage, essential for lubrications purpose, can then be obtained by running the pump and evenly tightening the gland nut in increments of two threads until approximately one drop every few seconds is obtained. Approximately 15 minutes should be left between successive adjustments.

FOR VALVES

1When all the rings have been fitted to fill the stuffing box, fit the gland follower and tighten the gland nuts to level the gland spigot. Tighten evenly until spindle has been tightly gripped then ease off the gland nuts so that the spindle will just turn. The system pressure can now be introduced.
2After a few hours service it is advisable to check the gland adjustment for any looseness that may have taken place due to initial setting in.
  • The high strength of the yarn and its abrasion resistance make it ideal for use with abrasive sand, slurry, gritty media, sludge & sewerage handling equipments.
  • It is used in pulp and paper, chemical, petrochemicals, pharmaceuticals, sugar, food industries power plants, etc.
  • Also used as anti extrusion rings in combination with other softer packing.