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Manual knife gate valve

A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category.

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Classification:

Cast steel valve series

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Description


A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category. The valve may be operated manually or with a hand wheel, handle or pedal, and may also be controlled to vary the pressure, temperature and flow rate of the fluid medium. The valve can perform continuous or repeated operations on these changes, such as safety valves installed in hot water systems or steam boilers. In more complex control systems, automatic control valves are used as required by external inputs (I. e., to adjust the changing set point of the flow through the pipeline). The automatic control valve does not need to be manually operated according to its input and setting, so that the valve can accurately control the various requirements of the fluid medium. Valves can also be divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum steel valves, chromium molybdenum vanadium steel valves, dual phase steel valves, plastic valves, non-standard customized valve materials, etc.

◆ Material of main parts

Valve body, upper cover Carbon steel, stainless steel
Ram Stainless Steel
Stem Stainless Steel
Sealing ring Rubber, PTFE, stainless steel, carbide

 

◆Technical parameters

Nominal pressure PN10
Shell test 1.5XPN
Sealing test 1.1XPN
Working temperature Rubber ≤ 80 ℃ PTFE seal ≤ 180 ℃ Hard seal ≤ 425 ℃
Applicable media Syrup, pulp, sewage, coal slurry, slag water mixture

 

◆ Main outline connection dimension

Nominal pressure PN DN(mm) L D D1 D2 H N-M D0
PZ73X-1.0  PZ73F-1.0  PZ73H-1.0  PZ73Y-1.0
PN1.0MPa 50 48 165 125 102 285 4-M16 180
65 50 185 145 122 298 8-M16 180
80 51 200 160 138 315 8-M16 220
100 51 220 180 158 365 8-M16 220
125 57 250 210 188 400 8-M16 230
150 57 285 240 212 470 8-M20 280
200 70 340 295 268 540 8-M20 360
250 70 395 350 320 630 12-M20 360
300 76 445 400 370 780 12-M20 400
350 76 505 460 430 885 16-M20 400
400 89 565 515 482 990 16-M24 400
450 89 615 565 532 1100 20-M24 530
500 114 670 620 585 1200 20-M24 530
600 114 780 725 685 1450 20-M27 600
700 117 895 840 800 1700 24-M27 600

Note: The flange size in this table is in accordance with GB/T9113-2010, and the structure length is in accordance with GB/T 12221-2005.

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