Stainless steel knife type valve

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PZ73H series Stainless steel knife type valve Due to the use of knife type gate has a good shearing,…

A, product introduction:
PZ73H series Stainless steel knife type valve Due to the use of knife type gate has a good shearing, the most suitable fluid in the slurry, powder granules, fibers and other difficult to control, widely used in papermaking, petrochemical, mining, drainage, food and other industries. Knife type valve with a variety of seat options, and can be controlled according to site requirements, equipped with electric or pneumatic actuators, valve automation.
Second, working principle:
PZ73H series Stainless steel knife type valve As a kind of gate valve, gate valve working principle with some similar, are on the gate of the lift to complete the opening and closing of the valve. Ram direction of motion perpendicular to the direction of the fluid, by the blade shaped gate can cutting fiber material to cut off the media. The PZ73H series stainless steel knife type gate valve does not actually exist in the chamber, the gate side of the guide groove and the lifting lug bottom pressed on the seat, to achieve high medium sealing, can choose O shaped sealing seat bi-directional seal.
Three, structural characteristics:
1, PZ73H series Stainless steel knife type valve Is the gate opening and closing parts, RAM direction of motion perpendicular to the direction of the fluid, valve can only be fully open and fully closed, can not be adjusted and the throttle.
2, 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; gate can be made to produce micro deformation, to improve in the process, make up the sealing surface angle deviations arising during processing, the gate is called the flexible gate.
3, 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.
Four, Stainless steel knife type valve Technical parameters:
PZ73H knife gate valve (quincunx);
Design and manufacture: JB/T8691-1998;
Length: GB/T15188.2-94;
Flange: GB/T9113.1-2000 JB/T79-94;
Test and inspection: GB/T13927-92;
Valve cover: carbon steel, stainless steel;
Ram: stainless steel;
Valve shaft: 301 stainless iron, stainless steel;
Seal ring: rubber, PTFE, stainless steel, hard alloy;
Nominal pressure: 0.6MPa, 1.0MPa, 1.6MPa, 2.5MPa, 150Lb;
The casing seal test: 1.1XPN test: 1.5XPN;
Nominal diameter: DN50 ~ 1000mmNPS2 ~ 40 "";
Working temperature: rubber seal 80 PTFE seal is less than or equal to 180 DEG C, C, C = 425 seal;
Suitable temperature: -38 ~ 650 + C (specific temperature range as the sealing material and the properties of the media set);
Flange: ANSIB16.5, GB / T9113, JB / T79, HG, SH, JIS, DIN, NF, BS;
Main material: WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8, CF8M, CF3, CF3M;
Seal type: hard seal, soft seal;
Leakage: Seal: D (liquid level 0.1 * DNmm3 / s): a soft seal (zero leakage);
Accessories: mounting flange;
Suitable medium: syrup, pulp, sewage, coal ash, slag and water mixture medium etc..
Five, Stainless steel knife type valve Installation notes:
1, the installation must be inspected before 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;
6 wire drive device shall be carried out according to a circuit diagram;
7, knife type valve must be regularly maintained, not free to collision and extrusion, so as not to affect the seal.
Six, standard specification:

Seven, the main performance specifications:

Eight, main parts material:

Ordering instructions:
1, before ordering please carefully understand the products - stainless steel 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 knife type 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.
The inspection (unloading) notice:
1, carefully controlled and ordered the product (stainless steel knife type 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.