Our Forged Bellow Seal Gate Valves are zero emission and maintenance free. An uninterrupted metallic barrier is positioned between the piping and the environment. The components that during valve operation are subject to relative movements are welded onto the extremities of a metallic bellows that absorbs and compensates the shiftings. Hence these valves are suitable for any fluid and are recommended when zero emission characteristics are required to protect the environment and the health of the workers from pollutive leaks, to prevent expensive wastes due to loss of energy and fluid, and to eliminate the not negligible cost of replacement of the packing. In conclusion, the valves are particularly suitable for dangerous, inflammable, lethal and explosive media.
Rating ASME B16.34
Class 800
• Size 1/2″ to 2″
•Standard Ends:
1.S.W. to ASME B16.11
2.B.W. to ASME B16.25
3.B.W. to DIN 3239
4.Screwed Ends NPT or BSP
•Standard Material Schedule:
1.Body and Bonnet of ASTM A105, Trim of Stellite Gr.6
2.Body and Bonnet of ASTM A182 F11, Trim of Stellite Gr.6
3.Body and Bonnet of ASTM A182 F316, Trim of Stellite Gr.6
4.Seat and Disk Stellite Gr. 6 hardened, for all Material Schedules
•OS & Y rising non-rotating Stem
• Screwed and sealwelded Bonnet
• Integral Backseat
• Backup Packing to API 602 / BS 5352
• Large Corrosion Allowance
•Actuator available
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