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Catalogue / BITZER / W4PA

BITZER · Open-drive compressors

W4PA

Refrigeration equipment BITZER W4PA

Technical data

Open Drive Reciprocating Compressors / // ".2" / // for NH₃

Model: W4PA
Family: Open-drive reciprocating compressors

Before confirming, check the nameplate and serial number.

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Availability and delivery

IF NOT AVAILABLE FROM STOCK7 weeks

Confirm availability when requesting your quotation.

Information dated 15/09/2026Check availability →

Enquiry forReplacementNew installation

Attach existing compressor nameplateAttach nameplate photoJPG/PNG · up to 1 MB

BITZER

Request complete compressor

Electrical supply to be confirmed from the nameplate.

€7,120.87EUR · excluding VAT · AACORE price

Need a spare part?

Quantity

Exploded drawing and spare parts

Included equipment

Oil charge ∙ Details see Application Range Refrigeration Oil Recips · KC68 (mineral oil) for NH₃
Oil heater · heater sleeve
Water-cooled cylinder heads · for fresh water

Options for this equipment

Oil charge ∙ Details see Application Range Refrigeration Oil Recips · SHC226E (PAO) for NH₃Coupling housing for B3 / B5 IEC motors · GK4430Coupling housing for B3 / B5 IEC motors · GK4440Coupling · pilot drilled KK411 bore for shaft D38 bore for shaft D42Coupling · pilot drilled KK411 bore for shaft D38 bore for shaft D42Coupling · pilot drilled KK411 bore for shaft D38 bore for shaft D42Coupling · pilot drilled KK415 bore for shaft D28 bore for shaft D38Coupling · pilot drilled KK415 bore for shaft D28 bore for shaft D38Coupling · pilot drilled KK415 bore for shaft D28 bore for shaft D38Coupling · bore for shaft D38 KK420 bore for shaft D42 bore for shaft D48Coupling · bore for shaft D38 KK420 bore for shaft D42 bore for shaft D48Coupling · bore for shaft D38 KK420 bore for shaft D42 bore for shaft D48Coupling · pilot drilled KK425 bore for shaft D42Coupling · pilot drilled KK425 bore for shaft D42Compressor flywheel / pulleyDifferential oil pressure switch Delta-PII · 115 .. 230 V-1-50/60 HzDifferential oil pressure switch MP55A · 230/115 V-1-50/60 HzDifferential oil pressure switch Delta-PIIA · 115 .. 230 V-1-50/60 HzOil heater · 100 W, 230 VOil heater · 100 W, 115 VOil heater · 100 W, 24 VOil heater · 100 W, 400 VCapacity regulator CR (1x) - cylinder head mounted - control valve enclosed · coil for 230 V-1-50/60 HzCapacity regulator CR (1x) - cylinder head mounted - control valve enclosed · coil for 115 V-1-50/60 HzCapacity regulator CR (1x) - cylinder head mounted - control valve enclosed · coil for 24 V-1-50/60 HzCapacity regulator CR (1x) - cylinder head mounted - control valve enclosed · coil for 24 V-DCCapacity regulator CR (1x) - cylinder head prepared · without control valveStart unloader - cylinder head with PTC sensor mounted - control valve enclosed - switching device SE-B2 included ∙ see position Discharge gas temperature sensor and switching device · coil for 230 V-1-50/60 HzStart unloader - cylinder head with PTC sensor mounted - control valve enclosed - switching device SE-B2 included ∙ see position Discharge gas temperature sensor and switching device · coil for 115 V-1-50/60 HzStart unloader - cylinder head with PTC sensor mounted - control valve enclosed - switching device SE-B2 included ∙ see position Discharge gas temperature sensor and switching device · coil for 24 V-1-50/60 HzStart unloader - cylinder head with PTC sensor mounted - control valve enclosed - switching device SE-B2 included ∙ see position Discharge gas temperature sensor and switching device · coil for 24 V-DCStart unloader - cylinder head prepared · ∙ without control valve ∙ without PTC sensor ∙ without switching deviceDischarge gas temperature sensor and switching device ∙ included in start unloader with control valve · PTC 140 and SE-B2, 230 V-50/60 HzDischarge gas temperature sensor and switching device ∙ included in start unloader with control valve · PTC 140 and SE-B2, 115 V-50/60 HzDischarge gas temperature sensor and switching device ∙ included in start unloader with control valve · PTC 140 and SE-B2, 24 V-50/60 HzDischarge gas temperature sensor and switching device ∙ included in start unloader with control valve · PTC 140 and SE-B2, 24 V-DCDischarge gas temperature sensor · PTC 140 ∙ without SE-B2 deviceOil service valve · not applicable with oil and gas equalizing fittingsWater-cooled cylinder heads · ∙ coated ∙ for seawaterConversion kit for marine applicationWarranty Extension per year · details see Warranty Extension

AACORESUPPLY

BITZER · DORIN · FRASCOLD · BOCK

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