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Product List for Valve Applications

PILOTGRAPH 4000 & 4003 PACKING

Long sealing life for high temperature high pressure valves
Available as standard grade - Pilotgraph 4000 or nuclear grade - Pilotgraph 4003
Inclusion of a corrosion inhibitor ensures stainless steel valve stems do not suffer pitting
Manufactured from highest quality pure graphite with minimal impurities
Contains Inconel wire reinforcement to minimise extrusion and provide high pressure capability
High thermal conductivity and low friction properties ensure increased service life
Easy to cut and install so can be used to replace moulded rings resulting in greatly reduced stock and cost

Description
Pilotgraph 4000
Manufactured from very pure expanded graphite containing minimal amounts of trace elements such as sulphur and chloride, then reinforcement with Inconel wire. This ensures that the packing has high thermal conductivity, very low friction and rapid heat dissipation, factors that ensure a long seal life. The inclusion of a corrosion inhibitor ensures that when the packing is used on valves with stainless steel stems, pitting does not occur in environments prone to galvanic corrosion.

Pilotgraph 4003
To meet the requirements of the nuclear industry, Pilotgraph 4003 is manufactured from an expanded graphite which contains less than 300 ppm of sulphur and less than 50 ppm of chloride. The construction and all the operating parameters are the same as Pilotgraph 4000.

Pilotgraph 4000 and 4003 are excellent packing for use on valves, reciprocating pumps and static applications on steam (saturated and superheated), hot oils, hydrocarbons and solvents in refineries, petro chemical, power generation and metal processing industries.

Operating Parameters

Valve applications

Temperature range: Inert gas conditions -200 to 1000oC (-330 to 1830oF)
Steam –200 to 650oC (-330 to 1200oF)
Oxidising environment –200 to 450oC (-330 to 840oF)
Maximum pressure: 350 bar (5080 psi) For higher pressures, please contact Beldam Crossley

Reciprocating applications

Speed: 2 m/s (390 fpm)
Temperature range: -200 to 450oC (-330 to 840oF)
Maximum pressure: 200 bar (3900 psi)

Chemical Compatibilities
For the pH range 0-14, the packing is chemically inert and suitable for steam. It should not be installed in strong oxidising environments such as hot concentrated nitric acid, highly concentrated sulphuric acid and molten alkali metals.

Sizes Available
All square sections from 3mm (1/8”) to 25mm (1”) are generally available from stock in differing lengths depending on the cross section. Larger and rectangular sections can also be manufactured to order. Pilotgraph 4000 and 4003 packing can also be supplied in preformed or die formed rings.

Download Pilotgraph 4000 Product Datasheet

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