Year1
- 品牌：
- 西门子
- 型号：
- DLRV
- 规格：
- DN25~DN250
瀹嬩綋< )
The controller has adjustment functions, precise control, multi-loop control, and diverse functions, and can be expanded according to different requirements.
The actuators include mechanical and electro-hydraulic types, with sensitive adjustment, large shut-off force, adjustable flow characteristics (linear or equal percentage), and with power-off protection function.
The valve body is a flow regulating valve with good linearity, large adjustable ratio, tight sealing, high temperature resistance, and anti-cavitation.
The flexible combination of controller functions can also achieve fluid flow, pressure, differential, temperature, enthalpy and air quality control.
Used for automatic control of the pressure difference bypass of the main water supply and return pipes of the circulation system, which is another typical application of electric regulating valves.
瀹嬩綋< )
瀹嬩綋< ) Domestic hot water system
瀹嬩綋< ) Air conditioning water/air system
瀹嬩綋< ) Thermal temperature control for production process
瀹嬩綋< )
瀹嬩綋< ) Through calculus calculation, the temperature change trend can be predicted in advance and the temperature can be controlled accurately.
瀹嬩綋< ) The current temperature value can be read by the controller and the working status of the valve can be observed.
瀹嬩綋< ) Expandable functions, such as temperature compensation, remote setting, day and night and winter and summer conversion, maximum priority, cascade control, over-temperature alarm, remote communication, central monitoring, etc., energy saving and safety.
瀹嬩狋< ) Households can choose the circuit breaker protection function according to their requirements, and the valve will automatically close when there is a power outage.
瀹嬩綋< ) Achieve various intelligent energy-saving operation modes, unattended and cost-effective.
瀹嬩綋< )
瀹嬩綋< ) When used for steam flow control, it generally refers to saturated steam with % dryness. If it is superheated steam, the flow rate changes due to changes in the steam adiabatic index and fluid viscosity coefficient, and generally needs to be recalculated and checked.
瀹嬩綋< ) The medium flow rate has a square root relationship with the pressure difference before and after the valve. Excessive pressure difference not only generates noise, but also causes cavitation on the valve body, affecting its service life. In some cases, the sealing may not be tight, and in severe cases, it may explode, causing casualties and other major accidents.
瀹嬩綋< ) Excellent temperature adjustment curve is the guarantee for achieving temperature control effect. In addition to the special requirements of fast heating systems, try to ensure that the valve has equal percentage or parabolic characteristics.
瀹嬩綋< ) Equal percentage R (／)
瀹嬩狋< ) Parabolic type: [+ (root sign R)／]
瀹嬩狋< ) Electric thermostatic valve It cannot be used as a stop valve for a long time. When shutting down, please close
瀹嬩狋< ) The two-way valve must not be used as a three-way valve by removing the blind plate of the valve base.
瀹嬩狋< ) When using equipment produced by a third party to match Siemens products, attention should be paid to complying with safety requirements.
瀹嬩綋< ) The temperature control valve cannot be used in a direct water supply system and must be circulated. If it is an instant heat exchanger, a heat storage tank must be added.
瀹嬩綋< ) When using domestic hot water, please distinguish between hourly hot water and scheduled hot water supply.
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