The DIN Cast Steel Bellow Seal Gate Valve is a high-performance isolation valve engineered for "zero-leakage" service. It combines the traditional wedge-gate mechanism with a flexible metal bellow that forms a permanent hermetic seal around the stem.
Key Advantages
Safety: It eliminates fugitive emissions, protecting personnel and the environment from toxic or flammable leaks.
Efficiency: Prevents energy loss in steam systems and oxidation in thermal oil applications.
Durability: The bellow typically offers a high cycle life, reducing the need for frequent packing adjustments.
Technical Attribute Table: DIN Bellow Seal Gate Valve
1,Design Standard,DIN 3352 / EN 1984
2,Face-to-Face,DIN 3202 F4 (Short) or F5 (Long)
3,Pressure Rating,"PN16, PN25, PN40"
4,Body Material,Cast Steel (GP240GH / 1.0619 / WCB)
5,Bellow Material,"SS316L, SS316Ti, or Inconel"
6,Stem Material,Stainless Steel (X20Cr13 / SS316)
7,Wedge Design,Flexible Wedge (Metal-to-Metal Seated)
8,Seat Material,Stellite No. 6 or 13Cr Overlay
9,Nominal Diameter,DN50 to DN400
10,Flange Dimensions,DIN EN 1092-1
11,Secondary Seal,Emergency Graphite Packing
12,Bonnet Design,Bolted Bonnet with Bellow Chamber
13,Stem Type,Rising Stem / OS&Y
14,Temperature Range,−29℃ to +425℃
15,Bellow Cycle Life,"Standardized to 2,000+ or 5,000+ cycles"
16,Shell Test,1.5× PN Rating
17,Seat Test,1.1× PN Rating
18,Leakage Class,EN 12266-1 Rate A (Bubble Tight)
19,Operation,Handwheel or Bevel Gear
20,Common Media,"Thermal Oil, Chlorine, Hydrogen, Steam"
Contact: Jorge Yang
Phone: +86-13588258503
E-mail: sales@fluvalve.com
Whatsapp:+86-13588258503
Add: Room 331, South Building,Building 1, No.3 Jinpeng Street, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province
