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Product Name:DIN BELLOW SEAL GLOBE VALVE
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Leakage from the valve gland is often a problem for environment protection & sometime it is quite dangerous if such leakage is from a hazardous fluid or gas. KOS bellow seal valves are designed with a bellow cartridge which welded to the valve bonnet and stem, so that when the stem up & down movement makes the bellows expands & compress. Therefore there is no sliding or rotating seals through which process fluid can leak.
Design Standard:
Design and Manufacture: EN 13709
Face to Face Dimension: EN558-1
Flange Connection Dimension: EN1092-1
BW Connection Dimension: EN 12627
Test and Inspection: EN12266
Products Range:
Size:            DN50 ~ 600 PN 16/25/40; DN50 ~ 400 PN 64/110;
Rating:          PN 16 ~ 110
Body Materials: Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel
Bellow Materials: SS304, SS316L, SS321, Inconel, Hastelloy C276
Trim:            Per API 600
Operation:       Handwheel, Gear, Motorized, Pneumatic
Design Feature:
Application:
Zero stem emission
Graphite stem packing secondary seal
Welded seat ring or integral body seating surface
8,000 cycles bellow without failure
Non-rising stem
Refinery
Petrochemical
Solar energy power plant
Hot oil, steam supply
General Industry