• The lift type wedge of the YFL extended stem knife gate valve can scrape the adhered medium on the seal face automatically;
• The blade type disc of the YFL large size knife gate valve is helpful to cut off the medium and discharge the residue so that the knife gate valve can be operated without blocking;
• Short face to face, light weight, small installation space needed, easy to install and dismantle;
• Rising stem and non-rising stem available;
• Soft seal, metal seal, single direction seal, bidirectional seal are available;
• Handwheel, bevel gear, pneumatic, electric, sprocket wheel, electric-hydraulic operated available.

Product range:

• Size: DN50～DN2000 2’’～80’’
• Pressure rating: PN10 PN16 150lbs
• End connection: Wafer
• Body materials: WCB CF8 CF8M etc.
• Wedge materials: 304 316 etc.
• Operation: handwheel gear electric pneumatic

Technical standards:

• Design: MSS SP-81
• Face to Face: MSS SP-81
• Flanged ends: ASME B16.5
• Test and inspection: MSS SP-81