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Trench Ram 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:

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

Z81X groove (clamp) connection valve is the introduction of similar foreign advanced products and design and manufacture of a series of new connection valve. It has the advantages of fast installation, simple, safe, reliable, not restricted by the installation site, convenient for the maintenance of pipelines and valves, vibration isolation and sound insulation, and within a certain angle range, it can overcome the imitation difference caused by the connection of different shafts of the pipeline, and solve the temperature difference. Advantages such as thermal expansion and contraction. It is widely used in water supply and drainage, fire protection, air conditioning, gas, petroleum, chemical industry, water treatment, municipal administration, shipbuilding and other pipeline projects as a control fluid.

◆ 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 145 160 170 180 200 240 275 325 355
H 325 380 425 455 - 500 620 750 880
D0 180 180 200 200 - 240 320 320 400

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