Automatic constant pressure differential valve + electric control valve performance

Automatic constant pressure differential valve + electric control valve is air-conditioning water system to address a very good balance method, the pressure when the system changes, constant pressure valve can be worse by changing the flow passage of its own area so that both ends of the electric control valve pressure remains unchanged, so that the valve has a CV value, thus ensuring the electrical control valve has been running at the optimal conditions, the change really only with water temperature has nothing to do with the pressure to ensure that access to air conditioning the amount of water in the box at any one time are the amount of water you need. Plexus of the performance of the system better, easier to maintain.

     The end of the system with automatic constant pressure differential valve + electric control valve eliminated after the use of hierarchical control in the balance valve, so that system performance can be better, easier to maintain.

First, automatic constant pressure differential valve + electric variable flow control valve is air-conditioning water system an important guarantee for water balance in the system of proportional integral balance the use of automatic control valve to bring you many benefits.

     1. Since the system does not require testing, so save a lot of trouble, saving a great deal of time and shorten the completion date;

     2. Just because they are not the use of valves and control valves for the stratified, so the more you save the pipe, insulation materials and installation costs and time involved;

     3. So that water systems are in balance at all times, so whether or equipment installed in stages in stages of construction will not affect the balance of the water system.

     4. Even if the work was put into operation late or because of changes in certain uses in certain areas and need to change the water system design, it will not affect the other regions of the water system design, but also in other regions will not affect the balance of the water system

     5. Since the whole system is in dynamic equilibrium state, so refrigeration units and pumps will be running the state the most energy-efficient, saving a large amount of operation and maintenance costs.

     6. As a result of the flow balance system is automatic, so that more convenient installation and maintenance, and eliminate human error may undermine the balance.

Second, the proportion of self-balancing valve with integral static comparative balance valve

     Static balance valve is a precise man-made set of cut-off valve opening, he had man-made adjustments to address local resistance to air-conditioning water system piping part of the water balance problems. Debug early in the system, the system all the valves are in a certain opening, commissioning personnel based on the mathematical model of the original one by one for each opening to a static balance valve settings (set up after the valve opening for a certain value ), but the water system of different distribution of the resistance curve is not the same as absolute, but can not be measured. Therefore, the static balance valve only vague, qualitative control of water flow. Of a variable flow water system for air-conditioning, air-conditioning box for each water change is random, the entire pipeline system pressure is unpredictable, the opening control valve is a random change. Therefore, we from the formula:

     G (flow) = CV * A (through-flow area of the valve) * △ P (the differential pressure valve at both ends)

     Can be drawn: as a result of static balance valve opening after a good tune for a certain value. Therefore, the valves at both ends of the pressure changes, is bound to lead to the adoption of a static balance valve of the flow changes. Therefore, a variable flow system when the system changes in static pressure balance valve disorders can not solve water problems. System will result in over-current and under-flow. valve ball valve gate valve check valve globe valve butterfly valve
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