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Features
(1) API flange stainless steel bellow sealed globe valve features simpler structure and easier maintenance when compared with gate valve.
(2) There is not much abrasion or scratch because the disc and valve sealing face don’t make relative sliding.
(3) Medium passway is not smooth, which makes hydraulic resistance large resulting in large power consumption.
(4) The disc stroke is short when bellow sealed stop valves start or stop. Thereby, its height is a bit lower than that of gate valve, while the structure length is longer.
(5) The valve stem axis of API flange stainless steel bellow sealed globe valve is vertical to valve seat sealing face.
(6) When the nominal pressure of medium flow direction is less than 16MPa, medium flows up from lower disc. When the pressure is more than 20MPa, medium flows down from upper disc, strengthening sealing performance. When in operation, medium flow direction is one way and can not be changed.
Parameters
Main Parts of API Flange Stainless Steel Bellow Sealed Globe Valve | ||||||
Body Cover Disc | Stem | Sealing Face | Sealing Shim | Packing | Working Temperature | Suitable Medium |
WCB | 2Cr13 | 13Cr STL With Body Material PTFE Nylon | Enhanced Flexible 1Cr13/Flexible Graphite SFB-2 08Soft Steel F304 F316 F304L F316L | Flexible Graphite Enhanced Flexible Graphite SFB/260 SFP/260 PTFE | ≤ 425 | Water Steam Petroleum Products |
WC1 | 38Cr Moal 25Cr 2Mov | ≤ 450 | ||||
WC6 | ≤ 540 | |||||
WC9 | ≤ 570 | |||||
C5 C12 | ≤ 540 | |||||
CF8 | F304 | ≤ 600 | Nitric Acid Acetic Acid | |||
CF3 | F316 | |||||
CF8M | F304L | |||||
CF3M | F316L | |||||
Structure Diagram
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