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PRESSURE REGULATING VALVESHigh Volume OEM Item (Type DPR) Type SPR & DPRGENERAL DESCRIPTION•Type SPR …Direct 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.Type DPRType SPR–DSPECIFICATIONS (Type SPR)OperationSpecificationsStandard modelSet pressure range wide modelMax. Working Pressure2.5MPa {25kgf/cm2}Airtight Test Pressure3MPa {30kgf/cm2}Fulid Temp. to 100°CPressure AdjustmentIncrease 1604 to 05: Approx. 0.08MPa {0.82kgf/cm2} /rotation1905 to 07: Approx. 0.05MPa {0.51kgf/cm2} /rotation3011 to 13: Approx. 0.03MPa {0.31kgf/cm2} /rotationIncrease 1604 to 05: Approx. 0.13MPa {1.3kgf/cm2} /rotation 1905 to 07: Approx. 0.07MPa {0.7kgf/cm2} /rotation 3011 to 13: Approx. 0.04MPa {0.4kgf/cm2} /rotationTYPE NUMBER SELECTIONType SPR – Standard model・Nominal capacity is based on condensing temp. 38˚C, evaporating temp. −10˚C, pressure drop across the valve 0.049 MPa {0.5kgf/cm2}, and Set Pressure R134a…0.2MPa {2kgf/cm2}, R22,R407C…0.4MPa {4kgf/cm2}, R404A...0.5MPa {5kgf/cm2}.Catalog No. FluidPort Size (mm)Nominal Capacity (U.S.R.T.) {kW}ConnectionWt. (kg)CT38°C ⊿P0.049MPa {0.5kgf/cm2} ET−10°CTypeModelR22 R134a R404AR407CCopper Tube (O.D.)StyleSPR–1604BFluorinated Refrigerants151.4 {4.9}0.9 {3.2}1.1 {3.9}1.3 {4.7}1/2"Flare0.31605B5/8"1905B203.0 {10.5}1.8 {6.3}2.5 {8.8}3.1 {10.9}0.51906B3/4"1604D151.4 {4.9}0.9 {3.2}1.1 {3.9}1.3 {4.7}1/2"Solder0.21605D5/8"1905D203.0 {10.5}1.8 {6.3}2.5 {8.8}3.1 {10.9}0.41906D3/4"1907D7/8"3011D295.0 {17.6}2.7 {9.5}4.5 {15.8}5.4 {19.1}1–1/8"1.33013D1–3/8"・Nominal capacity is based on condensing temp. 38˚C, evaporating temp. −10˚C, pressure drop across the valve 0.049 MPa {0.5kgf/cm2}, and Set Pressure 0.5MPa {5kgf/cm2}.Catalog No. FluidPort Size (mm)Nominal Capacity (U.S.R.T.) {kW}ConnectionWt. (kg)CT38°C ⊿P0.049MPa {0.5kgf/cm2} ET−10°CTypeModelR404ACopper Tube (O.D.)StyleSPR–1604BW Fluorinated Refrogerants151.08 {3.8}1/2"Flare0.31605BW5/8"1905BW202.1 {7.4}0.51906BW3/4"1604DW151.08 {3.8}1/2"Solder0.21605DW5/8"1905DW202.1 {7.4}0.41906DW3/4"1907DW7/8"3011DW294.04 {14.2}1–1/8"1.33013DW1–3/8"Type SPR – Set pressure range wide modelHigh Volume OEM ItemType SPR–B

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