Product introduction:
T669y-400c pneumatic high-pressure multi-stage regulating valve can basically solve the problem existing in the control valve pressure differential medium when the short life. Import and export pipeline is angular, with two or four buck structure, can effectively avoid cavitation and noise reduction, is suitable for the control of fluid pressure differential.
Features: the fine small pneumatic actuator and multistage high pressure valve. The valve body is an integral forging, connection form for angle. The body without flange, pipeline flange directly through bolts on the valve body, valve using the pressure balance type structure.
The working principle of ■:
T669y-400c pneumatic high-pressure multi-stage regulating valve can continuously adjust the valve has five kinds of structure in the high differential pressure range: multistage plunger, multi-stage sleeve, plunger, multilevel and multistage sleeve sleeve type multistage throttle, medium gradually reduced pressure, each drop are cavitation in the vapor pressure above, low noise, the non - regulated balance type structure, single seat, conical sealing, good sealing performance, can achieve zero leakage sleeve structure is porous cage, holes in strict accordance with the desired regulation of special arrangement, the spool and sleeve valve seat adjust the fit clearance between the appropriate adjustment process, the leakage current is less accurate, regulator valve. A good guide, adjust the balance, no vibration, self-cleaning ability seat welding hard alloy, coating hard alloy surface of the valve core, abrasion erosion resistance level pressure and throttle use spray technology, greatly improving the service life of the valve, and expanded the range, improve the adjustment precision, it is a patent product.
Used for boiler feed water side as feed starting or low load operation regulation water recirculation by-pass adjustment (minimum flow valve), water pressure bypass control, spray desuperheating adjustment, other high differential pressure to adjust, hydrophobic.
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