美标闸阀如何拆装清洗？ -ag旗舰厅首页

remove the gate valve and clean it
(1) preparation work - rivia valve
1. select the wrench, screw screw, crowbar, processing bar, top wire and other tools according to the required specifications of the valve.
prepare the proper amount of cotton yarn and detergent, and prepare the valve face seal, packing and lubricating oil according to the valve specifications.
(2) operation step - rivia valve
operate valve to full open position
remove the control valve before and after the gate valve and release the remaining media in the tube.
use a wrench to remove the flange bolt connected with the pipe, and the appropriate part of the gate valve with a sling, and the gate valve is hoisted with the appropriate equipment.
open the middle flange, inspect, clean the valve cavity, gate, stem head, middle flange gasket.
in the case of the broken middle flange gasket needs to be replaced, and a layer of butter is daubed on both sides of the sealing pad before installation.
6. after cleaning, the valve rod sets into ram, the ram guide groove and valve body, muscle, into the body, turn the handwheel, make the two flange close to suit the, in the load bolts, diagonal fastening nut.
after commissioning, pressure test shall be conducted according to the corresponding test procedure of valve.
clean the scene with tools and tools.
(3) technical requirements - rivia valve
when disassembling, the collision gate and seat sealing surface are strictly prohibited, and the direction of mounting surface of the gate can be marked before being removed.
all parts should be thoroughly cleaned.
each part shall be loaded in as much as possible and adjusted to a reasonable position.