James Walker Supagraf - Long-Term Sealing Plus Fugitive Emission Control System
A long-term, high integrity sealing solution for control valves. Supagraf Control is an innovative compression packing that provides long-term, high integrity sealing for control valves. Its very low friction enhances the control accuracy of valves. This is a `best available technique` product for reducing industry`s VOC fugitive emissions in line with the European Union`s IPPC Directive. It is manufactured in exfoliated graphite, reinforced in a novel way with a non-metallic structure to provide additional strength and resistance to pressure and extrusion. An advanced lubricant system is incorporated to prevent the pick-up of graphite on valve stems.
- High integrity gland sealing for control valve stems: to well below 50 ppm fugitive emission level
- Long-term adjustment-free operation: over 100,000 stem strokes with emission levels below 50 ppmV
- Very low coefficient of friction for smooth and accurate valve action
- Reduced friction requirement to save on power consumption and enable smaller actuators to be used
- Designed for emission control - to better than 50 ppmV leak tightness - on control valves in systems handling fluid media such as hydrocarbon liquid fuels, gases including CO2, lubricating oils, and hazardous process chemicals
- It is a long-term replacement for the PTFE V-type packings that can be readily damaged by ingress of dirt and other foreign particles to the gland area
- Control valves
- HPI/CPI
- Oil & Gas
- Valves
Valve stem duties:
- Maximum operating temperature: Up to +350°C (+662°F)
- Minimum operating temperature: -200°C (-328°F)
- Maximum system pressure (standard): 25 MPa/250 bar (3626 psi) - contact us for advice on use at higher pressures
Compatible with media in the range of pH 1-14 excluding strong oxidising agents. The product has low volatile content.
- All popular square sections from 3 mm (1/8") upwards in boxes containing 8 m (26` 3") in coil form or on spools as detailed in the product datasheet
- Also supplied as split preformed rings and sets
- Non-standard square or rectangular sections made to order
- Please refer to the product datasheet for spool ordering information
- TA Luft/VDI 2440
- ISO 15848-1 Class BH, CC3