Electro hydraulic knife gate valve

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PZ273H series Electro hydraulic knife gate valve Is a gate opening and closing parts, RAM direction …

A brief introduction:
PZ273H series Electro hydraulic knife gate valve Is a gate opening and closing parts, RAM direction of motion perpendicular to the direction of the fluid, the manual knife gate valve can be fully open and fully closed, can not be adjusted and the throttle. There are two gate sealing surface, the most common mode of gate valve sealing surface to form two wedge, the wedge angle varies with the valve parameters, usually 50, wedge type knife gate valve can be made into a whole, called the rigid gate; can also be made to produce micro deformation of ram, in order to improve its process of the deviation, make up the sealing surface angle in the process, the gate is called the flexible knife gate valve is closed, the sealing surface can only rely on media pressure to seal, that media pressure will depend on the sealing surface of the ram pressure to the other side of the seat to ensure the sealing surface of the seal, which is self sealing. Most of the knife gate valve is sealed by force, that the valve is closed, to rely on external pressure to force the gate to the seat, to ensure the sealing surface of the seal of the valve in the pipe shall be installed horizontally.
Two, measurement principle:
PZ273H series Electro hydraulic knife gate valve Has the advantages of simple and compact structure, reasonable design, light material saving, reliable sealing, flexible operation, small volume, smooth channel, small flow resistance, light weight, easy installation, easy disassembly and other advantages, can be in 1.0MPa-2.5MPa working pressure, working temperature of -29-650 DEG C under normal use. The knife type gate valve gate with the shear function, can scrape the surface of the adhesive seal material, automatically remove debris, stainless steel gate to prevent corrosion caused by seal leakage, entering the country from 80s. In less than twenty years, its use range from ordinary field to expand to a wider range of industries. From mine coal preparation plant, gangue, slag. To the development of the city's sewage treatment, industrial pipeline development from the general to food, health, medicine and other professional pipeline system. Thin knife gate valve with its small volume, small flow resistance, light weight, easy to install and remove and so thoroughly solve the difficult problem of flow resistance of ordinary plate gate valve, ball valve, gate valve, globe valve, regulating valve, butterfly valve and other valves, heavy weight, difficult installation and large area. After the emergence of knife gate valve, cut off a large number of generic valves and valves have been replaced.
Three, main features:
1. should be checked before installation the valve cavity and the sealing surface and other parts, there is dirt or sand does not allow attachment.
2. all bolts evenly tightened requirements.
3. check the packing requirements of pressed parts, both to ensure the tightness of packing, but also to ensure the gate open and flexible.
4. the user before installing the valve, the valve must be proof model, connect the flow of medium size and attention to ensure consistency with the requirements of the valve.
5. the user to install the valve, valve driver must reserve the necessary space.
Wiring 6. drive circuit diagram shall be carried out.
7. knife type valve must be regularly maintained, not free to collision and extrusion, so as not to affect the seal.
Fourth, the scope of application:
Mining, iron and steel industry for coal slurry, filter slag slurry.
Purification device for waste water, mud, dirt and water with suspended solids clarification.
Paper industry -- for any concentration of pulp, feed water mixture.
The sugar industry for beet washing, syrup, juice, juice etc..
The food industry: used for washing and washing equipment, grain conveying equipment, mash etc..
Power plant ash - ash slurry is used.
Fifth, standard specification:
Design and manufacturing standards:
The structure of standard length: GB/T 12221-2005
Flange standard: GB/T 9113
Pressure temperature rating: GB/T 12224-2005
Test standards: GB/T 13927-2008
Six, Electro hydraulic knife gate valve Electro hydraulic knife gate valve electric hydraulic resistance electric hydraulic valve knife gate slurry performance parameters:
Nominal pressure PN
Shell test 1.5 Mpa
The sealing test of 1.1 Mpa
The working temperature is not higher than 80 DEG PTFE seal rubber seal is not higher than 180 DEG C = 425
Applicable medium syrup, pulp, sewage, slurry, coal ash, slag and water mixture
Seven, hydraulic knife gate valve electrohydraulc knife gate valve electric hydraulic resistance knife gate valves electric hydraulic valve parts material slurry:
Carbon steel, stainless steel body, upper cover
The valve plate of stainless steel
Stainless steel stem
Ring rubber, PTFE, stainless steel, hard alloy sealing
Eight, the main external and connecting dimensions (mm)

Nine, ordering:
1, please carefully before ordering the understanding of the product - PZ273H electro hydraulic knife gate valve, clearly marked specifications, types and materials, pressure, quantity.
2, the occasion is very important when using more complex or the environment when you try to provide design drawings and detailed parameters by Zhongwei control of our experts audit checks for you.
3, order the PZ273H electro hydraulic knife gate valve, please fill out the order with the unit, receiving unit, the name of the payment unit, address (including the provincial, city, District, street, and No.), telephone, bank account, and representative.
4, the company's products are all order cash on delivery or delivery.
Ten, inspection (unloading) notice:
1, carefully controlled products and the order (PZ273H electro hydraulic knife gate valve) is the same, and there is no breakage of packing box.
2, choose suitable methods and tools, to prevent deformation or damage of the product; our company attaches great importance to the service, in order to achieve customer satisfaction product standards we have with the customer side by side, share experiences, information, commitment, goal, in cooperation between the development of excellent products. Whether you ask the product design principle, technology, price, schedule, transportation routes and any other problem, have specific customer service staff to answer your questions.