Disassembly and cleaning of the gate valve
(1) Preparation-Ruitong Valve
① Select the wrench, screw, pry bar, processing bar, top wire, and other tools according to the required specifications of the valve.
② Prepare the appropriate amount of cotton yarn, detergent, valve end gasket, packing, lubricant, etc., according to the valve specifications.
(2) Operation steps - Ruitong valve
① Operate the valve to the fully open position.
② Cut off the gate valve before and after the control valve is removed, and empty the remaining medium in the pipe.
③ Use a wrench to disassemble the gate valve and pipe connection flange bolts, tether the appropriate part of the gate valve with a sling, and lift the gate valve with the appropriate equipment.
④ Disassemble the middle flange, check and clean the valve cavity, gate plate, stem head, and middle flange gasket.
⑤ There is a broken middle flange gasket that needs to be replaced again, and a layer of grease is applied to both sides of the gasket before installation.
⑥ After cleaning, set the stem into the gate, align the gate guiding groove with the valve body guiding tendon, install the valve body, turn the handwheel so that the two middle flanges are close together in alignment, install the bolt, and tighten the nut diagonally.
⑦ Commissioning is completed, according to the valve corresponding test procedures for pressure testing.
⑧ Pack up tools and clean up the site.
(3) Technical requirements - Ruitong Valve
① Disassembly, collision gate, and seat sealing surface are strictly prohibited, and pay attention to the direction of the installation surface of the gate, which can be marked before dismantling.
② All parts should be thoroughly cleaned.
③ Each part should be installed as far as possible to ensure that the original state and adjusted to a reasonable position.
