Packing passes emissions tests with ease
A
James Walker and Co product story
Edited by the Engineeringtalk editorial team
Feb 21, 2008
Supagraf Premier compression packing has beaten TA-Luft VDI 2440 emission control requirements by a significant margin.
Supagraf Premier, James Walker's world-leading compression packing, has beaten TA-Luft VDI 2440 emission control requirements by a significant margin to gain an outstanding rating in independent tests carried out at the Amtec laboratory in Germany.
Recorded gas emission levels in tests at 240 and 400C, respectively, would not fill a golf ball or tennis ball in a year.
The tests on a set of 56mm OD Supagraf Premier rings were undertaken for Ruhr Oel - a 50/50 joint venture of Deutsche BP and Petroleos de Venezuela - which owns the Schloven and Horst refineries at Gelsenkirchen, plus the Munchsmunster petrochemical plant.
It needed to know the sealing efficiency of graphite valve packings from several suppliers in order to comply with the European Union's IPPC pollution prevention and control directive.
Targets of the investigation were to confirm TA-Luft leakage rates less than 10e-4mbar.litre/(sm) at sealing system temperatures below 250C, and less than 10e-2mbar.litre/(sm) above 250C.
The test cycle involved 1000 vertical valve stem movements of 40mm - without live-loading on the packing - while sealing helium at 25bar for 24 hours.
Leakage measurements after 24 hours at 240C showed 7.0 x 10e-6mbar.litre/(sm).
"You can visualise this as less gas than will fill a golf ball in a year, measured at ambient pressure", explains James Walker Business Development Manager Brian Milford.
"It also demonstrates that Supagraf Premier very easily surpasses TA-Luft requirements for a high grade valve packing".
After 24 hours at 400C, the leakage rate was 2.3 x 10e-5mbar.litre/(sm).
Says Milford: "This rate is exceptionally better than TA-Luft requirements for duties above 250C.
A year of emissions at this level would not even fill a tennis ball".
Supagraf Premier has a 10 year record of beating fugitive emission control specifications.
In 1997 it was subjected to over 12,000 valve operating cycles with methane at 40bar and kept emission levels below 500ppm.
In 1999, it came top of its class in comparative tests run by the Materials Technology Centre of Akzo Nobel.
Leakage rates were between six and 100 times less than competitor's brands - and it lasted 12 times longer than the next best valve packing.
Since then it has twice been certified to TA-Luft requirements - by different customers - and third-party verified for emission control by CETIM to Shell SPE 77/321 Class A specification.
Not what you're looking for? Search the site.
Contact James Walker and Co
Tel +44 1270 536000
Other James Walker and Co stories
-
Gland packing passes emissions testing
Supagraf Premier gland packing can be used with both live-loaded and unloaded valve stem sealing systems to help meet IPPC environmental requirements. -
Valve stem packing tops third-party tests
Third-party tests on Supagraf Premier valve stem packing have shown it to be a technically superior fugitive emissions control product. -
James Walker publishes rotary sealing guide
James Walker has released a two-part rotary sealing guide, focusing on Walkersele high-efficiency radial lip seals. -
Hydrosele success at Italian pumped storage plant
James Walker's Hydrosele has proved its sealing efficiency by running maintenance free for over two years at ENEL's Entracque pumped-storage hydroelectric scheme in Italy. -
Sealing system controls fugitive emissions
Six cartridge seals with floating glands, custom-designed by James Walker, have now operated problem-free for over 12 years at a major UK refinery.
Articles by product category
- Consultancy and Services (903)
- Machine Building (4,517)
-
Engineering Design Software (6,179)
- Engineering Design Software (12)
- 2D CAD software (200)
- 3D CAD software (1,157)
- FEA and structural analysis software (369)
- Fluid, thermal, noise, vibration software (334)
- Simulation, modelling, validation software (914)
- Rendering, visualisation, styling software (196)
- Materials design and moulding design software (151)
- Process, instrumentation, automation software (258)
- Electrical design software (164)
- Publishing and documentation software (229)
- Maths, charting, statistics, QA software (317)
- Data, document management software (310)
- CAM, CNC, production management software (568)
- File conversion software, data capture (351)
- PLM and collaboration software (649)
-
Drives, Motors and Controls (3,361)
- Drives, Motors and Controls (1)
- Precision Motors and Gears (411)
- Industrial Drives/Controls (1,276)
- Linear Drives and Motors (114)
- Industrial Motors (497)
- Stepper and Servo Drives, Motors, Controls (1,060)
- Small Mechanical Components, Joining, Tools (1,975)
-
Control and Instrumentation (5,028)
- Plantwide control (1,324)
- Plant- and Machine-Wide Communications (1,174)
- Smaller-Sized PLCs (387)
- CNC and Motion Controllers (184)
- Mid-range and Large PLCs (201)
- Power Supplies, Uninterruptible Power (562)
- HMIs/Operator Interfaces (294)
- Logic Controllers, Timers and Relays (96)
- Cabling, Conduit, Signal Conditioning (806)
-
Monitoring, Measurement and Quality (5,459)
- Monitoring, Measurement and Quality (1)
- Data acquisition Software and Communications (494)
- Data Acquisition Hardware and PC I/O Boards (472)
- Electrical and Electronic Testing, PAT Equipment (630)
- Form/co-ordinate, optical, vision instruments (703)
- Gauges, Indicators and Instruments (440)
- Data loggers (422)
- Materials testing equipment (421)
- Telecomms/network test equipment, software etc (154)
- Testing and Calibration Services and Information (500)
- Testing, analysing and monitoring equipment (1,222)
-
Electrical and Electronic Equipment Design (4,160)
- Batteries, chargers and circuit protection (555)
- Connectors, Terminals, Busbars, Slip Rings (679)
- Enclosures and Equipment Cooling Fans (709)
- Knobs, Handles and Enclosure Hardware (420)
- PCs and Embedded Systems (798)
- Electrical and Electronic Subassemblies (369)
- Electrical and Electronic Components (630)
-
Materials and Processing (2,963)
- Materials and Processing (5)
- Materials and components (2,215)
- Rapid Prototyping (458)
- Materials processing and testing (285)
-
Engineering Industry News, Resources (6,093)
- Engineering Industry News, Resources (4)
- Engineering Business News, Views (388)
- Engineering Exhibitions, Events (562)
- Engineering Conferences (425)
- Engineering Seminars (400)
- Engineering Industry Developments, Awards (633)
- Engineering Guides, Newsletters (349)
- Engineering Recruitment, Employment (219)
- Engineering Training Courses (433)
- Engineering Education, Resources, Standards (838)
- Engineering Industry Reports, Surveys (597)
- Electronic Resources for Engineers (278)
- Health and Safety Legislation (402)
- Health and Safety Strategy, Risk Assessment (113)
- Health and Safety Consultancy, Software (175)
- Health and Safety Events, Training, News (277)
-
Powertrain Design (3,598)
- Powertrain Design (2)
- Bearings (939)
- Chains and belts (326)
- Gears, brakes, couplings and engines (1,441)
- Hydraulic Components (471)
- Lubricants (418)
-
Capital Equipment (3,387)
- Capital Equipment (1)
- Manufacturing Machinery and Plant Equipment (468)
- Production line blowers and fans (62)
- Compressors and Air Treatment (510)
- Electronics Manufacturing, Tools, Instruments (192)
- Electrical hardware (131)
- Machinery and Production Equipment (1,093)
- Robotics, Handling and Storage (930)
-
Sensors (7,080)
- Sensors (8)
- Accelerometers and Vibration Sensors (427)
- Loadcells, Force Sensors, Torque Sensors (699)
- Pressure sensors (621)
- Flowmeters and Flow Sensors (618)
- Level Sensors and Leak Detectors (527)
- Linear Position Sensors (399)
- Rotary Position, Tilt and Angular Sensors (546)
- Proximity Sensors (700)
- Gas, Chemical, Radiation, Magnetic Sensors (284)
- Humidity and Environmental Sensors (152)
- Temperature sensors (612)
- Vision and Colour Sensors (1,384)
- Barcode Sensors (103)
- Valves, Pumps, Process Hardware (3,623)
