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AHSTCO

PORTABLE HYDRAULIC ACTUATOR

What It does

AHSTCO has developed a revolutionary portable actuator to cycle valves without gearbox by fixing it on the stem of the valves. The custom-made base plate is designed & fabricated at our workshop and is fixed on the valve that will be hydraulically operated to fully close or open the valve.

Imagine a valve for which the gearbox is damaged or a situation in which the valve becomes very hard to operate and your team wanted to cycle the valve. This innovative service we have developed, for such valves is our portable hydraulic powered actuator that can be used to cycle the valve. During inspection, our team will take measurement and fabricate a base plate.

how Does it Work?

  • The base plate will be fixed on the valve after removing the gearbox of the valve.
  • The key will be fixed onto the stem of the valve that will facilitate the hydraulic pistons to operate the valve.
  • The hydraulic pistons will be then fixed on the base plate attachment and aligned with the key.
  • The pistons will be connected via high-pressure hose to the hydraulic hand pump.
  • The calculation for maximum applicable pressure will be submitted to client and our technician depending on the size, type and class of the valve.
  • Before starting the procedure, the technician will follow Internal cleaning and chemical cleaning of valve using Sealweld Valve Cleaner Plus and Sealweld Odyssey Solvent.
  • After that, the technician will gradually apply pressure (for smooth torque increase transition) and at the same time constantly monitor the pressure applied via the pistons on the valve until the valve gradually starts to operate.
  • Once the valve starts operating normally, attempt to stroke the valve 2-3 times and later apply Sealweld Equa-Lube 80 for thorough Lubrication.
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