This Onda S.p.A. S09 H-20 brazed plate heat exchanger is a new-in-box, 20-plate single-circuit unit built for refrigeration and HVAC heat transfer duty. Constructed with 316L stainless steel plates copper-brazed for corrosion resistance and thermal efficiency, it carries a 653 PSI design rating on both sides and handles all common refrigerants except ammonia, including R410A, R404A, R134a, and R22. The compact body (approximately 13 in long by 3 in wide by 3 in deep, 6 lb) suits tight equipment packages, condensing units, heat pumps, chillers, and water-to-refrigerant applications rated at roughly 1.5 tons. Connections follow the standard Onda S09 single-circuit layout (config AA, four ports F1-F2-W1-W2): refrigerant inlet F1 at 5/8 in solder, refrigerant outlet F2 at 3/4 in solder, and secondary-fluid ports W1/W2 at 1/2 in gas thread. Buyers should confirm port type against the physical unit before brazing, as Onda builds special-connection variants. The unit is cULus Listed (file SA32759), manufactured under PED and ISO 9001, and ships new in box with protective port caps in place. OEM code X009020AA20003, serial R2200755-019, built 2022. 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. S09 H-20 Brazed Plate Heat Exchanger Manufacturer: Onda S.p.A. (Mussolente, Italy) Model: S09 H-20 (S09 family, High Pressure, 20 plates) OEM Code: X009020AA20003 Serial Number: R2200755-019 Built: 2022 Construction: - Plate material: 316L stainless steel - Brazing material: Copper (Cu) - Configuration: Single circuit, 20 plates - Connection config AA: four ports F1-F2-W1-W2 Performance: - Design pressure: 653 PSI (per UL nameplate) - Temperature range: -320 F to 435 F (per nameplate) - Channel volume: 0.13 / 0.14 Gal - Refrigerants: All except ammonia (R410A, R404A, R134a, R22, HCFC/HFC) - Approximate capacity: 1.5 tons (application-dependent; Onda rates by application software) Connections (standard S09 config, confirm against physical unit before brazing): - F1 refrigerant inlet: S18 solder, 18 mm (approx 5/8 in OD) - F2 refrigerant outlet: S20 solder, 20 mm (approx 3/4 in OD) - W1/W2 secondary fluid: C22 conical male gas thread, 22 mm (approx 1/2 in GAS) Certifications: - cULus Listed, file SA32759 - PED 2014/68/EU - ISO 9001 Dimensions: approx 13 in L x 3 in W x 3 in H, 6 lb Condition: New in box, protective port caps in place