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Trench 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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Ductile iron 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.

◆ Product overview

Z85X groove dark rod elastic seat seal gate valve is a kind of soft seal gate valve is the introduction of foreign technology production of new gate valve products, with traditional valves do not have a variety of advantages, a wide range of applications. It has the advantages of light switch, reliable sealing, good elastic memory and long service life. The groove gate valve is light in weight, the body is made of ductile iron, the weight is about 20%-30% less than the traditional gate valve, and the installation and maintenance are convenient. It is widely used in tap water, sewage, construction, petroleum, chemical industry, food, medicine, textile, electric power, shipbuilding, metallurgy, energy system and other fluid pipelines as regulating and intercepting devices.

◆ Main technical specifications

Nominal diameter Nominal pressure (MPa) Sealing test (MPa) Shell test pressure (Mpa) Medium temperature Applicable media
DN50~DN300 1.0/1.6 1.1/1.76 1.5/2.4 0~70 ℃ Clean water, sewage and raw water

 

◆ Material of main parts

Name Valve body Spool valve core rubber Bonnet Stem snap ring Gland Bracket Sealing ring Handwheel Bolt
Material ductile iron ductile iron EPDM或NBR ductile iron 20Cr13 Bronze ductile iron ductile iron NBR ductile iron 8.8 galvanized

 

◆ Main outline connection dimension

Nominal diameter (mm) 50 65 80 100 125 150 200 250 300
D 57 60 76 89 108 114 133/140 159/165 219 273 325
A 14.5 14.5 14.5 16 16 16 19 19 19
B 9.5 9.5 9.5 9.5 9.5 9.5 13 13 13
C 2.2 2.2 2.2 2.2 2.2 2.2 2.5 2.5 3.3
L 145 180 180 180 200 240 275 325 355
H 325 455 455 455 - 500 620 750 880
D0 180 200 200 200 - 240 320 320 400

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