PTFE + GRAPHITE & ARAMIDE COMBINATION PACKING

PTFE + GRAPHITE & ARAMIDE COMBINATION PACKING

Construction

: High quality combination of Pure PTFE-Graphite blended Yarn with Pure Aramid yarn at the 4 corners.This packing is a low friction & excellent wear resistant packing.

Technical Parameters :

Temperature

:-240oC to +260oC

pH Range

: 0-12

Pressure

: 200 Kg/Cm2

Velocity

: 20 Meters / Second

Applications

  • With good sliding properties and thermal conductivity, this packing can be used in high pressure pumps with sliding velocity.
  • Aramide yarn corners prevent gap extrusion in high pressure & high temperature applications.
  • It is widely used in pistons pumps, mixers, stirrers, reactors, paper mill & other applications involving abrasive media.

RUBBER CORE PTFE-GRAPHITE WITH ARAMID PACKINGS

  • This packing can be made available with silicon / rubber solid or hollow core.
  • A specially developed packing for use on rotating equipments with excessive shaft deviation.
  • It also reduces shaft / sleeve wear.
  • The center of silicon core / cord gives it strong restoration properties and exerts back-pressure, resulting in total sealing.
  • This packing is suitable for pumps, reactors, mixers, agitators, etc.
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.