Vacuum gate valve

Application

Vacuum gate valve is engineered for fluid shutoff and isolation with atmosphere. It is used to prevent air ingress into pipeline of steam turbine vacuum system in thermal power plant. Thus, vacuum inside condenser is maintained.

Specification

Pressure: PN1.6～PN10MPa
Temperature: ≤540℃
Standard: GB/T12234
Connection: flange or butt weld.
operation: manual or motorized.

Material

Body: WCB, ZG1Cr5Mo, ZG1Cr18Ni9Ti
Bonnet: WCB, ZG1Cr5Mo, ZG1Cr18Ni9Ti
Disc: WCB+Stellite12, ZG1Cr5Mo+ Stellite12, ZG1Cr18Ni9Ti+ ZG1Cr18Ni9Ti
Seat: Stellite6
Stem: 2Cr13, 4Cr9Si2, 1Cr18NiTi
Packing: expanded graphite, PTFE.

Features

• Packing box sealed by 0.6～1.6MPa water. Low friction, excellent air tightness.
• Reasonable sealing structure with extended service life.
• Parallel slide gate with resilient seal. Easy open & close, reliable performance.
• Compact structure, easy maintenance.
• Valve stem treated by thermal refining and nitriding process. Good resistance to erosion.