Valve operation maintenance purposes, to ensure that the valve in a perennial neat, well-oiled, the valve member is complete, the normal operation of the state.
First, a cleaning of the valve
The trapezoidal thread on the surface of the valve stem and stem nut, stem nut bracket sliding parts and gear, worm and other components, easy to stick to plot a lot of dust. Oil spill as well as medium stains stolen goods, the valve will wear and corrosion. Therefore kept external to the valve, and the active parts of the cleaning, protect valves paint complete, it is obviously very important. Dust valve suitable for brush whisk and compressed air purge; trapezoidal thread and teeth of stolen goods suitable for rag scrub; suitable for steam purge valve oil and medium stains, even with copper wire brush to wash until processing surface, with the surface showing metallic luster paint qualities of the paint surface showing so far. Traps should be the person responsible, the class checked at least once regularly open the flush valve and the sparse flow valve end plugs flush, or periodic disassembly flush plug valves, in order to avoid the stolen goods.
Second, the lubrication of the valve
Valves trapezoidal thread, the sliding portions of the stem nut and the bracket, the bearing parts, the gear and the worm wheel, the engagement portion of the worm and the other with the activities of parts, requires good lubrication condition, to reduce the friction between avoid mutual wear. Some parts specifically with oil cup or glib, if damaged or lost in the operation should repair fully serviced, oil to dredge.
The lubricating parts should be the specific situation on a regular basis refueling. Frequently turned on, the high temperature of the valve is adapted to the interval of one week to one month refueling time, not often open, the temperature is not high valve fuel cycle may be longer. Lubricant oil, butter, molybdenum disulfide and graphite. The temperature valve is not suitable for used motor oil, butter, they will melt due to heat loss, while suitable for injection of molybdenum disulfide and Moca graphite powders. Exposed requiring lubrication, such as trapezoidal screw threads, gears and other parts, the use of butter and other fats, easy to dust, while the use of molybdenum disulfide and graphite powder lubrication is not easy to dust, the lubricating effect is better than butter. Graphite powder is not easy to direct smear, can be a little oil or water blending said the use of high and strong. copyright dedecms
Oiling sealed plug valves should be in accordance with the specified time oiling, or easy to wear and leakage.
Third, the maintenance of the valve
Valves, valve parts should run a complete, intact. The flange bracket Bolts indispensable, the thread should be intact allowed loosening. Hand wheel fastening nuts, such as loose should be tightened to prevent wear and tear the joints or lost the hand wheel and nameplate. The handwheel if lost not allowed to use the adjustable wrench instead should be fully serviced. The packing gland does not allow to skew or object pretension gap. Vulnerable to rain, snow, dust, sand and dirt contamination of the environment, pneumatic control valve stem to install the protective cover. The valve on the ruler should maintain complete, accurate and clear. Valve seals, caps, pneumatic accessories should be complete and intact. Insulation jacket should be no dents, cracks.
Not allowed to beat in the run valve station or supporting heavy loads, especially non-metallic valves and cast iron valves, but also to prohibit. Stainless steel multi-stage centrifugal pumps
CDL / CDLF non-self-priming multistage centrifugal pump installation standard motor, the motor shaft through the pump head with a shaft linked directly connected with the pump shaft, rod bolts pressure cylinders, flow passage components are fixed on the pump head and out of the water segment between the pump inlet and outlet of the pump bottom at the same; This pump can be configured according to the needs of intelligent protector to pump dry, phase loss, overload effective protection.
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