Bonnet with vacuum packing chamber structure (see chart 1), when the vacuum pump via suction port for to vacuum, then make the system from the atmosphere, suitable for power plant turbine condenser and vacuum negative pressure system, vacuum sealing function isolation. Vacuum isolation gate valve disc adopts parallel type double ram structure or wedge structure of single ram.
USES:
NK series vacuum isolation valve is applicable to pressure or less 10.0 MPA, working temperature of 425 degrees or less (carbon steel), 550 - degree or less (alloy), the working medium is water, steam or air piping, as actuator, is especially suitable for power plant turbine condenser and vacuum negative pressure system, the ultra vacuum insulated sealing function.
Structure features:
1, cover with vacuum packing chamber structure (see chart 1), when the vacuum pump via suction port for to vacuum, then make the system from the atmosphere, suitable for power plant turbine condenser and vacuum negative pressure system, the vacuum insulated sealing function.
2, vacuum isolation gate valve disc adopts parallel type structure of double ram or wedge type single ram structure, reliable sealing, light open and close, maintenance is convenient.
3, NK series vacuum isolation valve performance test according to JB/T6446-91 standard (vacuum valve technology conditions), to detect the vacuum isolating valve leakage rate and general ability.
4, NK series vacuum isolation valve connection flange, welding, manual and electric drive mode.
Keywords:butterfly valve ,knife gate valve,ball valve,globe valve,slurry gate valve
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