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Datasheet generated 2026-10-08
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Danfoss CHV-X 80 straightway check valve, 80 mm (3 in) butt weld, 52 bar, steel (code 148B6596)

Danfoss · HVAC & Refrigeration · Check Valves · Denmark · danfoss.com
Part Number
148B6596  ·  HS 8481.30
Danfoss CHV-X 80 straightway check valve, 80 mm (3 in) butt weld, 52 bar, steel (code 148B6596)

Danfoss CHV-X 80 check (non-return) valve for the SVL Flexline industrial-refrigeration range, code 148B6596. The CHV-X permits refrigerant flow in one direction only and closes to prevent back-flow toward pumps, compressors and vessels. The cold-resistant steel housing carries a spring-loaded, guided cone with a V-port profile that throttles below roughly 25% lift to suppress valve chatter and noise. This SKU is the straightway body with 80 mm (3 in) butt-weld connections to ASME B 36.10M Schedule 40. Flow coefficient Kv 81 m3/h (Cv 94 gal/min); minimum opening differential pressure 0.04 bar (0.58 psi); flow direction marked by an embossed 1-way arrow. Maximum working pressure 52 bar (754 psig); media temperature range -60 to 150 C (-76 to 302 F). For HCFC, non-flammable HFC, R717 (ammonia) and R744 (CO2) systems. Built on the SVL Flexline modular platform and serviceable with SVL Flexline spare parts.

Technical Specifications

TypeCHV-X 80 (SVL Flexline check valve) Code number: 148B6596 Series: CHV-X (SVL Flexline) Function: Check (non-return) valve Nominal size: 80 mm (3 in) Flow direction: Straightway Connection: Butt weld (ASME B 36.10M Schedule 40) Housing material: Steel (cold-resistant) Kv value: 81 m3/h (Cv 94 gal/min) minimum opening differential pressure: 0.04 bar (0.58 psi) Flow direction indicator: Embossed 1-way arrow Maximum working pressure: 52 bar (754 psig) Media temperature range: -60 to 150 C (-76 to 302 F) Applicable media: HCFC, HFC, R717 (ammonia)
R744 (CO2) Fluid groups1, 2 Approvals: CE
PED Category II ComplianceEU RoHS
China RoHS Net weight11.2 kg EAN: 5702428989312 Product group: Check valves Approval: CE CE mark: Yes China RoHS compliance: Yes Colour Paint: Reddish brown Connection Code: (2002:S40:80) Connection material: Steel Connection size [in]: 3 in Connection size [mm]: 80 mm Connection standard: ASME B 36.10M SCHEDULE 40 Connection type: Butt weld Cv value [gal/min]: 94 gal/min Direction: Straightway EU RoHS compliance: Yes Fluid Group: 1 Inlet connection size [mm]: 80 mm Inlet connection type: Butt weld Kv value [m³/h]: 81 m³/h Max. Working Pressure [bar]: 52 bar Max. Working Pressure [psig]: 754 psig MinODP [bar]: 0.04 bar MinODP [psi]: 0.58 psi PED category: II REACH Candidate List substances: No Refrigerants: R134a Temperature range [°C] [max]: 150 °C Temperature range [°C] [min]: -60 °C Temperature range [°F] [max]: 302 °F Temperature range [°F] [min]: -76 °F

Properties

MaterialSteel
Pressure rating52 bar
Temperature range-60 to 150 C
Standard size80 mm
MOQ1

Compatibility

Danfoss SVL Flexline CHV-X check valve. Select by nominal size (80 mm / 3 in), flow body (straightway) and connection standard (ASME B 36.10M Schedule 40 butt weld). EN 10220 and ASME B 36.10M Schedule 40 weld-end preparations are not interchangeable — confirm the mating pipe schedule before ordering. The CHV-X is check-only; where an integral hand shut-off is also required, use the SCA-X stop/check valve of the same size. Mount with the embossed arrow in the direction of intended flow.

Approvals

Attached Documents