This Onda S.p.A. S12 H-118 brazed plate heat exchanger is a new-in-box, 118-plate single-circuit unit for refrigeration and HVAC heat transfer. It uses 316L stainless steel plates copper-brazed for corrosion resistance and thermal efficiency, carries a 653 PSI design rating on both sides, and handles all common refrigerants except ammonia, including R410A, R404A, R134a, and R22. At roughly 12 in long by 5 in wide by 12 in deep (33 lb), it suits larger condensing units, heat pumps, chillers, and water-to-refrigerant applications around 8.4 tons. Connections follow the standard Onda S12 single-circuit layout (config AA, four ports F1-F2-W1-W2): refrigerant inlet F1 at 7/8 in solder, refrigerant outlet F2 at 1-1/8 in solder, and secondary-fluid ports W1/W2 at 1 in gas thread. Confirm port type against the physical unit before brazing, as Onda builds special-connection variants. The unit is UL Listed (file SA32755), built under PED and ISO 9001, and ships new in box. OEM code X012118AA20002, serial R2117791-008, built 2021. King Surplus offers this as a high-confidence item backed by a 100 percent 14-day money-back guarantee less shipping. Surplus pricing well below new distributor list makes this an efficient replacement or spare for refrigeration technicians, OEM builders, and maintenance operations.

FACTORY SPECIFICATIONS - Onda S.p.A. S12 H-118 Brazed Plate Heat Exchanger Manufacturer: Onda S.p.A. (Mussolente, Italy) Model: S12 H-118 (S12 family, High Pressure, 118 plates) OEM Code: X012118AA20002 Serial Number: R2117791-008 Built: 2021 Construction: - Plate material: 316L stainless steel - Brazing material: Copper (Cu) - Configuration: Single circuit, 118 plates, config AA (F1-F2-W1-W2) Performance: - Design pressure: 653 PSI (per UL nameplate) - Temperature range: -320 F to 435 F - Channel volume: 1.08 / 1.10 Gal - Refrigerants: All except ammonia (R410A, R404A, R134a, R22, HCFC/HFC) - Approximate capacity: 8.4 tons (application-dependent) Connections (standard S12 config, confirm against physical unit before brazing): - F1 refrigerant inlet: S22 solder, 22 mm (approx 7/8 in OD) - F2 refrigerant outlet: S28 solder, 28 mm (approx 1-1/8 in OD) - W1/W2 secondary fluid: C32 conical male gas thread, 32 mm (approx 1 in GAS) Certifications: UL Listed file SA32755, PED 2014/68/EU, ISO 9001 Dimensions: approx 12 in L x 5 in W x 12 in H, 33 lb Condition: New in box