Product Description

DPR

• Type SPR … Di rec t operated, 2-way valves, designed for
maintaining suitable compressor suction pressure in
refrigeration or air conditioning units.
Fitted in suction line after the evaporator to prevent
compressor overload.
• Type DPR … Fitted in by-pass line between compressor discharge
and suction line in refrigeration or air conditioning
units. (Quantity order only.)
Senses excessive compressor discharge pressure and
releases it through the bypass line to the low pressure
side to protect the compressor from overloading.
Reduces frequency of cut-in and cut-out of high
pressure switch to keep the compressor operating.
A typical advantage is in the heating cycle of heat
pump systems during spring or autumn, or at the
time when filter is clogged with foreign materials.