The pneumatic knife gate valve is mainly composed of left and right valve bodies, U-shaped sealing rings, gate plates, steel nuts, valve stems, brackets, cylinders, etc. The opening and closing of the valve is completed by the action of the cylinder.
Structural features of PZ673X pneumatic knife gate valve:
(1) It adopts a wafer-type structure, which is small in size and light in weight.
(2) The completely open channel can prevent the medium from depositing in the valve.
(3) The newly developed U-shaped sealing ring can ensure the good sealing performance of the valve.
(4) The outer seal of the gate is realized by the elastic sealing strip embedded in the valve body, and can be adjusted by means of screws and pressing plates.
(5) The flow resistance is small.
(6) Convenient installation and maintenance.
PZ673X pneumatic knife gate valve executive standard
Design standard JB/T869l-1998 MSS SP-81
Flange standard GB/T9113.1-2000
Structure length GB/T1-5188.2-94
Test and pressure GB/T13927-2000
Fourth, PZ673X pneumatic knife gate valve actuator technical parameters
Part name Material name Material grade
Round nut high quality carbon steel 25
Handwheel gray cast steel HT200
Bearing gland high quality carbon steel 35
Stem nut aluminum bronze ZCuA19Mn2, ZCuA19Fe4Ni4Mn2
Aluminum brass ZCuZn25A16Fe3Mn3
Bearing 51110
Stem stainless steel 304, 316, 2Cr13
Bracket: carbon steel, stainless steel WCB, CF8, etc.
Ram stainless steel 304, 316, 304L, 316L, 2Cr13
Bolt and nut high quality carbon steel 35
Packing gland carbon steel WCB
Filling Flexible Graphite Packing Asbestos Root Reinforced PTFE Fiber Packing
Valve body carbon steel, stainless steel WCB, CF8 (304), CF3 (304L), CF8M (316), CF3M (316L), sealing seat overlay welding alloy or stainless steel