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1. The wedge has two sealing faces. The two sealing surface of the most commonly used gate valve forms a wedge, whose angle varies with valve parameters, usually 5°.
2. The sealing principle of the wedge gate valve depends on the close connection of two sealing surfaces of the wedge and two sealing surfaces of the guide slot of the valve body when they are wedged.
3. The valve body and the bonnet may be connected by bolts, pressure self-tight or welding.
4. The wedge is solid.
Design standard: API 602, BS 5352
The length of the structure: as per manufacturer's standard
Flange connecting end: ASME B16.5
Butt welding connecting end: ASME B16.25
Wall thickness: API 602, ASME B16.34
Inspection and test: API 602
Pressure and temperature rating: ASME B16.34
Product scope: NPS 1/2 Inch - NPS 3 Inch, Class 150 - 2500 LB
Main body material: ASTM A105, ASTM A182 LF2, ASTM A182 F11, ASTM A182 F22, ASTM A182 F51, ASTM A182 F91, ASTM A182 F304, ASTM A182 F316, ASTM A182 F304L, ASTM A182 F316L, etc.
Drive device: handle, bevel gear, electric, pneumatic, etc.