Overview of Flange Gate Valve in Forged Steel
Forged steel gate valve integral flange end valve has three kinds of bonnet design, the first is bolt type bonnet, through concave and convex surface connection, adopt stainless steel belt and flexible graphite winding gasket, also can use ring connection according to demand, the second is welding type bonnet, after welding through thread seal, also can use rigid welding directly according to demand, the third is self-sealing bonnet, connect with self-sealing bonnet through thread.
The integral flange end valve structure design can be used in gate valve, stop valve, check valve and rotary check valve.
Design & Strdand
Design:API 602,BS5352,ANSI B16.34.
Test Strdand:API 598
Face to Face :ANSI/ASME B16.10
Flanged End:ANSI/ASME B16.5
1. Check the valve cavity and sealing surface before installation, do not allow dirt or sand attachment ;
2. Bolts in each connection should be tightened evenly ;
3. Check packing position to ensure sealing and opening flexibility ;
4. Gate valves must be maintained regularly and must not collide and squeeze at will so as not to affect the sealing.