Positive gear gate valve applies to nominal pressure PN10.0 ~ 25.0Mpa, operating temperature - 29~600 degrees of petroleum, chemical, thermal power plants and other working conditions on the pipeline, cut off?or?switch on the media. Applicable medium: water, oil, steam and so on. The operating modes are manual, gear drive, electric, etc..
Z441H, Z441Y, Z440H, Z440Y positive gear gate valve structure features:
1., in line with the requirements of advanced standards at home and abroad, reliable sealing, good performance and beautiful appearance.
2. gate and valve seat sealing surface of iron based alloy surfacing?or?Stellite cobalt based alloy surfacing and wear resistant and heat resistant, corrosion resistant, anti abrasion performance and long service life.
3.. The stem is hardened and nitrided and has good corrosion resistance and scratch resistance.
4., wedge type elastic gate structure, large and medium diameter rolling bearings, small friction, easy to open and close.
5. can use a variety of piping flange standards and flange sealing surface type, to meet the needs of various engineering and user requirements.
Order note:
If there is no selected model, please provide detailed parameters, such as medium, temperature, pressure, caliber, material and so on. Our technicians will?select?for you
Two. Provided that the selected model is available according to the selected model
Three, non standard products need to provide samples?or?confirmed by drawings
Note: the information is for reference only,?or?incomplete, so please feel sorry for the inconvenience. The company can choose according to different requirements and parameters. The company has a variety of sizes, pressure, different materials, connections, drive mode, to meet the different needs of various types of gate valve. Please contact 021-6651 8677?or?consult online.
1 in line with the requirements of domestic and foreign advanced standards, sealing reliability, excellent performance, beautiful appearance.
Iron based alloy surfacing?or?Stellite 2 gate and valve seat sealing surface (Stellite) cobalt based alloy welding and become, abrasion resistance, corrosion resistance, high temperature, good anti abrasion performance, long service life.
3 stem after tempering and surface nitriding treatment, have good corrosion resistance and scratch resistance.
4 wedge elastic wedge structure, medium and large diameter set rolling bearings, friction is small, open and close easily.
5 can be used with standard pipe flanges and flange sealing surface, to meet the needs of various projects and user requirements.
Design and manufacturing: GB12234
Structure length: GB12221
Pressure temperature rating: GB/T74 HG20604 GB9131
Connecting flange: GB9113 HG20593-20635 JG/T79
Experiment and test: JB/T9092 GB13927
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