• The YFL parallel double disc slab gate valve has sealing structure consisting of two parallel discs and wedge tightening device to replace the traditional wedge type gate valve sealing structure;
• The components of YFL parallel double disc slab gate valve sealing mechanism are separated to make sure the sealing performance when deformation caused by temperature, and the disc won’t get stuck duo to expanding caused by high temperature;
• In high temperature and high pressure working condition, the disc of inlet side is designed with pressure self relief which can avoid abnormal pressure increasing in cavity caused by temperature change to ensure safe operation.

Product range:

• Size: DN25～DN1100 1’’ ～44’’
• Pressure rating: PN16～PN420 150lbs～2500lbs
• End connection: Flanged RF BW
• Body materials: WCB LCB CF8 CF8M etc.
• Seat materials: A105+PTFE LCB+PTFE F304+PTFE F316+PTFE
• Operation: handwheel gear electric pneumatic

Technical standards:

• Design: API 6D
• Face to Face: API 6D
• Flanged ends: ASME B16.5
• Test and inspection: API 598