Special Features & Benefits
Fugitive Emissions - Complies to ISO 15848-1: 2006 Class AH leakage
SIL3 Safety Integrity Level for Automated Valves
The bellows lifecycle is designed as per MSS SP-117
Metal bellows seal the moving stem and increase durability of packed stem seal valves
Bellow provide a barrier between the stem at its point of entry through the pressure boundary and the process fluid within the valve, to eliminate stem leakage
An anti-rotation device is provided in the bonnet to ensure bellow does not get twisted during assembly and disassembly or by vibration
Bellow-sealed valves are usually leak tested using a mass spectrometer to detect leakage rates below 1x10E-06 std.cc/sec.
Bellow-sealed bonnets are backed up with a standard stem packing set and a leakage monitoring port between the bellows and the packing in order to prevent catastrophic release of hazardous fluid in the event of a bellows leak. -
Special Features & Benefits
Fugitive Emissions - Complies to ISO 15848-1: 2006 Class AH leakage
SIL3 Safety Integrity Level for Automated Valves
The bellows lifecycle is designed as per MSS SP-117
Metal bellows seal the moving stem and increase durability of packed stem seal valves
Bellow provide a barrier between the stem at its point of entry through the pressure boundary and the process fluid within the valve, to eliminate stem leakage
An anti-rotation device is provided in the bonnet to ensure bellow does not get twisted during assembly and disassembly or by vibration
Bellow-sealed valves are usually leak tested using a mass spectrometer to detect leakage rates below 1x10E-06 std.cc/sec.
Bellow-sealed bonnets are backed up with a standard stem packing set and a leakage monitoring port between the bellows and the packing in order to prevent catastrophic release of hazardous fluid in the event of a bellows leak. -
Check Valves- Pressure-Seal mechanism utilizes line pressure to enhance seal; ensures sealing integrity at higher operating pressures. Customised deposition process in F91/ C12A valves to avoid delamination of hardfaced surfaces Live loading of bonnet bolts for F91/ C12A valves
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Features Size 2" to 72" (50 mm to 1800 mm) ASME Class Class 150 to 2500 Design Standard API 600, API 603, ASME B 16.34 Special Features & Benefit Gate Valve design complies to API 600, Edition 13 Offered with API 600 monogram Fugitive Emissions - Complies to API 624 and ISO 15848-1 (<50 ppm / Class AH leakage levels, optional) Gate Valves tested to API 624 at Yarmouth Research Lab, Maine, USA Body gasket leakage <100 ppm observed on eight sizes tested as per API 624 Annexure A Fire Safe - By design and tested to API 607/ ISO 10497 CE Marking - Meets requirements of Pressure Equipment Directive 2014/68/EU, Annexure III, Module H PED Module B1 Design Examination Certificate (certified by DNV) available Atex - Meets requirements of Atex Directive 94/9/EC (ATEX), category 2 non-electrical equipment SIL 3 Safety Integrity Level for Automated Valves Gate valves successfully tested to Shell Design Validation Test Procedure 77/300 and witnessed by Shell Inspectors Robust stem-wedge design connection successfully tested as per API RP 591 Annex B Hardfaced body guides and wedge slots (sizes >24”) Inconel overlay/ cladded options offered -
Special Features & Benefits Gate Valve design complies to API 600, Edition 13 Offered with API 600 monogram Fugitive Emissions - Complies to API 624 and ISO 15848-1 (<50 ppm / Class AH leakage levels, optional) Gate Valves tested to API 624 at Yarmouth Research Lab, Maine, USA Body gasket leakage <100 ppm observed on eight sizes tested as per API 624 Annexure A Fire Safe - By design and tested to API 607/ ISO 10497 CE Marking - Meets requirements of Pressure Equipment Directive 2014/68/EU, Annexure III, Module H PED Module B1 Design Examination Certificate (certified by DNV) available ATEX - Meets requirements of ATEX Directive 94/9/EC (ATEX), category 2 non-electrical equipment SIL 3 Safety Integrity Level certificatation is available Gate valves successfully tested to Shell Design Validation Test Procedure 77/300 and witnessed by Shell Inspectors Robust stem-wedge design connection successfully tested as per API RP 591 Annex B Hardfaced body guides and wedge slots (sizes >24”) Inconel overlay/ cladded options offered -
Globe Valves- Pressure-Seal mechanism utilizes line pressure to enhance seal; ensures sealing integrity at higher operating pressures.
- In-situ hardfaced seat design for all sizes
- Higher hardfacing thickness (3 mm) to ensure consistent hot hardness
- Body-guided Disc offered in all sizes/classes to provide disc stability and avoids vibration of the disc-disc nut assembly. Disc guides hardfaced for longer life