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Product Name:DIN-EN Bellow Sealed Gate 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 1984, DIN 3352
Face to Face Dimension: EN558-1, DIN3202
Flange Connection Dimension: EN1092, DIN2544 PN25, DIN2545 PN40, DIN2546 PN64
BW Connection Dimension: EN 12627
Test and Inspection: EN12266, ISO5208
Products Range:
Size:            DN50 ~ 1200 PN 16/25/40; DN50 ~ 600 PN 64/110/150;
Rating:          ANSI 150lb ~ 600lb; PN 16 ~ 150
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:
Zero stem emission
Flexible wedge
Graphite stem packing secondary seal
Threaded or welded seat ring
5,000 cycles bellow without failure
Solar energy power plant
Hot oil, steam supply
General Industry