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Electric two-way 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

VB7000 proportional integral electric control valve can adjust the flow of steam or hot and cold water, widely used in central air conditioning, heating, water treatment, industrial processing industry and other systems of fluid control.

◆ Material of main parts

1. Valve body and valve seat: ductile iron H200
2. Disc: brass
3. Stem: stainless steel

◆Technical parameters

Medium: hot cold water, 50% ethylene glycol, steam
Medium temperature: 2-120 ℃
Nominal pressure: PN1600KPa
Flow characteristics: equal percentage or linear
Leakage: 0.05% of Kv value



◆Product features

1, the actuator selection of all cast aluminum bracket and shell, small size, light weight;
2, the use of permanent magnet synchronous motor, and with hysteresis clutch mechanism, with reliable self-protection function;
3, suitable for a variety of control signals: incremental (floating point), voltage (0~10V), current (4 ~ 20mA);
4, with 0~10V or 4 ~ 20mA feedback signal (optional);
5. The transmission gear adopts metal gear, which greatly improves the service life of the driver; 6. Low power consumption, large output force and low noise;
6. Low power consumption, large output force and low noise;
7. The valve body has cast copper and cast iron materials to choose from to suit the requirements of different working media and temperature;
8. The valve body has two kinds of threaded connection and flange connection, which is easy to install;
9. The structure of the valve body includes two-way valve (single seat), two-way balancing valve (balanced), three-way conflux and three-way diverter valve.







◆ Main outline connection dimension

Model DN
(Mm)
Main dimensions (mm) Travel
(Mm)
Execution process △Pmax Closing differential pressure
Two-way Tee L H H1 D K C N-d (KPa)
VB7200-50 VB7300-50 50 230 450 145 165 125 20 4-18 45 500 500
VB7200-65 VB7300-65 65 290 468 150 185 145 20 4-18 45 400 400
VB7200-80 VB7300-80 80 310 475 185 200 160 20 8-18 45 300 300
VB7200-100 VB7300-100 100 350 475 205 220 180 22 8-18 45 300 300
VB7200-125 VB7300-125 125 400 504 230 250 210 22 8-18 45 200 200
VB7200-150 VB7300-150 150 410 532 280 285 240 24 8-22 45 100 100
VB7200-200 VB7300-200 200 520 550 280 340 245 30 12-22 45 100 100

 

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