Title:Cast steel gate valve Add time:5-29-2012
1. Design of disc: NPS>2, usually wedge flexible gate, NPS<2 are of wedge solid gate.
2. Body and bonnet connection: usually, 150lb-900lb are of bolted bonnet, 1500lb-2500lb are of pressure seal design.
3. Gasket of cover flange: usually,150lb & 300lb: stainless steel + flexible graphite combined gasket; 300lb & 600lb: stainless + flexible graphite wounded gasket; 600lb & 900lb: ring joint gasket; 1500lb-2500lb:pressure seal design.
4. Actuation: usually, handwheel & bevel gear operation.
5. Back seating design.
If need more information, please visit the website of Jingdong: http://www.jdbv.com
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