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PNPN16,PN25 Optional
Flange standardISO 7005,JB/T 4700-200 and ANSI B16.5
Leakage rate0.02% of KVs value
Allow mediaWater valve(2℃~90℃)Chilled water, cooling water, antifreeze water, refrigerant
Allowable working pressure1.6MPa. 2.5MPa
Trip20mm(≤DN65)、40mm(≥DN80)
Body materialCast iron
SpoolStainless steel
Valve stemStainless steel
Sealing surfacePTEF
Sealing structureV-shaped sealing ring + stainless steel spring self compensation
Product overview
The dynamic balance electric control valve adopts a new design concept and is widely used in the automatic control of central air conditioning and heating system. In practical engineering, when the pipeline water pressure fluctuates, the product can dynamically balance the system pressure change, so that the flow characteristic curve of the valve is consistent with the ideal flow characteristic curve without design deviation. The special design of the dynamic balance electric control valve ensures that its regulation is only controlled by the control signal and is not affected by the system pressure fluctuation. When it corresponds to a fixed opening, its flow is unique and constant. Therefore, the heat / cooling capacity transmitted by the dynamic balance electric control valve at any regulation position is stable. It is especially suitable for variable flow systems with large system load changes, It has the remarkable characteristics of anti pressure interference, stable working state, high regulation accuracy and energy saving.
Product features
The closing pressure difference of the valve is high and the leakage is very small;
The valve body is made of cast steel, the surface is treated with rust prevention, and the appearance is exquisite;
The direct stroke adjustable driver is adopted, and the accurate output of flow is: equal percentage curve or equal linear curve (the dial switch on the driver can be set freely);
The dynamic balance part adopts the bellows balance design scheme, which can easily realize the dynamic balance function in the case of large pressure fluctuation in front of the valve;
Driver control signal: 0(2)-10VDC,0(4)-20mA(the dial switch on the driver can be set freely); Feedback signal of driver valve position: 0(2)-10VDC, 0(4)-20mA(freely set by the dial switch on the driver).