Automatic pressure maintenance units SPL/SPL-S maintain the set operating pressure in the system, carry out compensation of thermal expansion, deaeration and replenishment of coolant losses. They are designed for closed systems of heating and cooling supply with large volumes of heat carrier and high static pressure, where installation of expansion tanks is not a sufficiently effective solution of the pressure maintenance issue.
AUPD SPL are manufactured in accordance with GOST 31839-2012, GOST IEC 60204-1-2002, GOST 30804.6.2-2013. They meet the requirements of SP 41-101-95 and SP 60.13330.2020.
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