• ZQDF Model Series Solenoid Valve
  • Copper thread connecting body
  • Copper flange
  • Stainless steel thread
  • Stainless steel flanges
• ZCZ Model (Pilot piston) solenoid valve
• Copper body Thread
• Copper flange
• Stainless steel thread
• Stainless steel flanges
• ZSW Model Copper patch direct-acting solenoid valve body
  • Copper body Thread
  • Stainless steel threaded flange body
• DF Model (Patch Pilot) solenoid valve
  • Copper body Thread
  • Rail flange
• ZCT Model Solenoid Valve
• AB, AG series multi-applications
• plastic solenoid valve
  • XJD Plastic flooded Series Solenoid Valve
  • XFD Series waterproof plastic solenoid valve
• Filter(GLT)

Common Faults and eliminate the control valve

Regulating valve and control valve maintenance of normal operation of a large number of relations. Valve failure varied, but there's one fault may have different reasons. First, the implementation of the main faults 1. Pneumatic, Hydraulic Pneumatic implementing agencies implementing agency of the films
① patch, the patch is the most important element, The gas supply system in normal circumstances, if the executing agency does not move, it should think whether membrane rupture, Does not installed. When the contact surface of the metal surface cusp, Burr and other defects will bring patch punctured and drained, and the patch must not leak. In addition, the patch used for too long a time, will affect the use of materials aging.
② pneumatic piston, hydraulic piston driving force of the implementing agencies, piston damage, wear is absolutely impermissible.
③ Needling (liquid) governing the importation of pressure towards the implementation of this is the pathway and therefore frequently check whether or not a solid, leak.
④ suit to examine putting any bending deformation, shedding. Putting firmly connected with the valve stem, a good position to be adjusted so that we can ensure that sufficient itinerary and the closure of the valve.
⑤ spring spring to check for any faults. Manufacturing, processing, improper heat treatment will make spring fracture. Some of the spring in excessive loads, may also fracture.
2. ① body electric motor can check motor rotation, easily overheated, and whether there are adequate torque load. Second, to check whether there are any servo amplifier output can adjust.
③ slowdown in the factory sector slowdown in the same sector. Therefore, in order to -- in his drive shaft parts, gears, worm gear and whether the damage is excessive wear.
④ torque controller based on specific structural inspection of the reasons for its failure. Second, the valve to the main faults
① regular check valve by valve wall corrosion and wear. especially for medium and high corrosion worse, the role of the air valve under the worst conditions. must ensure that its strength is and decay, wear resistance.
② spool because spool cutting fluid regulation and played the role of the closure components, washed by the media. corrosion, the worst particle collisions in the high-pressure differential, easier circumstances cavitation damage. Therefore it is necessary to check whether all parts of the damage, wear, corrosion, it should be repaired or replaced.
③ Seat Contact seat is the key to ensuring the valve closes, it is subject to corruption by grinding the situation is more serious. But because of the permeability so that the fixed seat often surface corrosion and loose threads, it is particularly necessary to examine the site.
④ check valve and spool valve, push-rod connecting any loosening, it produced the deformation, cracks and corrosion.
⑤ Teflon or other filler filler check whether the aging increase of more than 5 percentage points, metamorphic, packing it tightly compressed.
⑥ gaskets and O-ring can crack such a large part of aging.