This Onda S.p.A. S82 H-128 brazed plate heat exchanger is a new-in-box, 128-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 21 in long by 5 in wide by 13 in deep (64 lb), it suits larger condensing units, heat pumps, chillers, and water-to-refrigerant applications around 6.9 tons. Connections follow the standard Onda S82 single-circuit layout (config AA, four ports F1-F2-W1-W2): refrigerant inlet F1 at 7/8 in solder, refrigerant outlet F2 at 1-3/8 in solder, and secondary-fluid ports W1/W2 at 1-1/2 in gas thread. Confirm port type against the physical unit before brazing, as Onda builds special-connection variants. The unit is UL Listed (file SA32759), built under PED and ISO 9001, and ships new in box. OEM code X082128AA20001, serial R2110598-002, 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. S82 H-128 Brazed Plate Heat Exchanger Manufacturer: Onda S.p.A. (Mussolente, Italy) Model: S82 H-128 (S82 family, High Pressure, 128 plates) OEM Code: X082128AA20001 Serial Number: R2110598-002 Built: 2021 Construction: - Plate material: 316L stainless steel - Brazing material: Copper (Cu) - Configuration: Single circuit, 128 plates, config AA (F1-F2-W1-W2) Performance: - Design pressure: 653 PSI (per UL nameplate) - Temperature range: -320 F to 435 F - Channel volume: 2.03 / 2.06 Gal - Refrigerants: All except ammonia (R410A, R404A, R134a, R22, HCFC/HFC) - Approximate capacity: 6.9 tons (application-dependent) Connections (standard S82 config, confirm against physical unit before brazing): - F1 refrigerant inlet: S22 solder, 22 mm (approx 7/8 in OD) - F2 refrigerant outlet: S35 solder, 35 mm (approx 1-3/8 in OD) - W1/W2 secondary fluid: C42 conical male gas thread, 42 mm (approx 1-1/2 in GAS) Certifications: UL Listed file SA32759, PED 2014/68/EU, ISO 9001 Dimensions: approx 21 in L x 5 in W x 13 in H, 64 lb Condition: New in box