Stainless Steel Knife Gate Valve
Overview
Knife gate valve, also called knife gate valve, knife gate valve, is suitable for pipes with suspended particles, fiber materials such as pulp, sewage, coal slurry, ash cement mixture and other media. It relies on a blade-shaped gate that can cut fiber materials. Cut off these media. There is actually no cavity in the valve body. The gate rises and falls in the side guide groove, and is pressed tightly against the valve seat by the lugs at the bottom. If higher medium sealing is required, an O-shaped sealing valve seat can be used to achieve this. Two-way sealing. According to the driving mode, it is divided into manual knife gate valve, pneumatic knife gate valve and electric knife gate valve. Knife gate valve is light and flexible in operation, small in size, smooth in channel, small in flow resistance, light in weight, easy to install and easy to disassemble. Its nominal size is DN50~DN800, and it can operate normally under the working pressure of 0.6MPa~1.6MPa and the operating temperature ≤100℃. Work. The gate plate of the knife gate valve has a shearing function, which can scrape off the adhesive on the sealing surface and automatically remove debris. Stainless steel gate prevents seal leakage caused by corrosion.
Function: Mainly used for emptying and discharging the medium in the pipeline.
Applicable media: dust, sewage pulp, sewage, coal slurry, ash, slag-water mixture, etc.
Application: Mainly used for coal preparation, gangue discharge, and slag discharge in mining power plants, and can also be used for sewage treatment.
Features: This valve has the advantages of simple and compact structure, reasonable design, light material saving, reliable sealing, light and flexible operation, small size, smooth channel, small flow resistance, light weight, easy installation and easy disassembly, etc.
Technical parameters
Product name PZ73H, PZ73X, PZ73Y knife gate valve
Product model PZ73H, PZ73X, PZ73Y
Connection method: wafer type
Structural method: rising stem wedge type
Valve body material cast steel, carbon steel, stainless steel
Nominal pressure: 0.6MPa, 1.0MPa, 1.6MPa, 2.5MPa, 150LB
Nominal diameter: DN50mm~DN2000mm NPS 2"~80"
Applicable temperature: -38℃~1100℃ (the specific temperature range depends on the material of the sealing material and the properties of the medium)
Connecting flange: ANSI B16.5, GB/T9113, JB/T79, HG, SH, JIS, DIN, NF, BS
Main material: C.I, WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8, CF8M, CF3, CF3M, 2Cr25Ni20
Sealing form: metal seal, soft seal
Leakage amount: Metal seal: Class D (liquid 0.1×DNmm3/s); Soft seal: Class A (zero leakage)
Matching accessories: mounting flange
parts material
maintenance
1. The handwheel, handle and transmission mechanism are not allowed to be used for lifting, and collision is strictly prohibited.
2. The knife gate valve should be installed vertically (that is, the valve stem is in a vertical position and the handwheel is at the top).
3. The gate valve with a bypass valve should open the bypass valve before opening (to balance the pressure difference between the inlet and outlet and reduce the opening force).
4. Gate valves with transmission mechanisms should be installed according to the product instruction manual.
5. If the valve is frequently used on and off, lubricate it at least once a month.
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