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Datasheet generated 2026-10-09
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Danfoss CHV-X SS 25 straightway check valve, 25 mm (1 in) butt weld EN 10220, stainless steel, 52 bar (code 148B5680)

Danfoss · HVAC & Refrigeration · Check Valves · Denmark · danfoss.com
Part Number
148B5680  ·  HS 8481.30
Danfoss CHV-X SS 25 straightway check valve, 25 mm (1 in) butt weld EN 10220, stainless steel, 52 bar (code 148B5680)

Danfoss CHV-X SS 25 check (non-return) valve, store code 148B5680, straightway stainless steel body. The CHV-X is a spring-loaded check valve in the Danfoss SVL Flexline range that prevents reverse flow of refrigerant in liquid, suction and hot-gas lines; opening differential pressure 0.04 bar. Applicable to R717 (ammonia), R744 (CO2) and fluorinated refrigerants and their oils. Nominal size 25 mm (1 in), butt weld connections to EN 10220; flow coefficient Kv 16 m3/h (Cv 18.6 gal/min). Stainless steel housing. Maximum working pressure 52 bar g (754 psig); media temperature -60 to 150 C (-76 to 302 F). Conformity assessment PED 2014/68/EU Article 4, paragraph 3 (sound engineering practice). Specifications per Danfoss store code 148B5680. EAN 5702428890656.

Technical Specifications

TypeCHV-X SS 25 check valve (SVL Flexline)
Code number148B5680
Nominal size25 mm (1 in)
Flow direction bodyStraightway
Connectionbutt weld both ends, EN 10220
Flowone-way check (reverse-flow prevention)
Flow coefficient Kv16 m3/h (Cv 18.6 gal/min)
Housing materialstainless steel
Net weight1.28 kg
Maximum working pressure52 bar g (754 psig)
Media temperature range-60 to 150 C (-76 to 302 F)
Applicable mediaR717 (ammonia), R744 (CO2), HFC/HCFC refrigerants and oils
Conformity assessmentPED 2014/68/EU Art. 4, par. 3
ApprovalsCE
EAN5702428890656
Product groupCheck valves
ApprovalCE
CE markYes
China RoHS complianceYes
Colour PaintReddish brown
Connection Code(2501:D26:25)
Connection materialStainless steel
Connection size [in]1 in
Connection size [mm]25 mm
Connection standardEN 10220
Connection typeButt weld
Cv value [gal/min]18.6 gal/min
DirectionStraightway
EU RoHS complianceYes
Flow direction indicatorEmbossed 1-way arrow
Fluid Group1
Kv value [m³/h]16 m³/h
Max. Working Pressure [bar]52 bar
Max. Working Pressure [psig]754 psig
MinODP [bar]0.04 bar
MinODP [psi]0.62 psi
PED categoryArt. 4, par. 3
REACH Candidate List substancesNo
RefrigerantsR134a
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

MaterialStainless steel
Pressure rating52 bar
Temperature range-60 to 150 C
Primary standardEN 10220
Standard size25 mm
MOQ1

Compatibility

Danfoss SVL Flexline CHV-X SS 25. Select by flow direction (straightway), connection (butt weld EN 10220) and top. EN 10220 and ASME weld-end preparations are not interchangeable — confirm the mating pipe schedule/OD before ordering. Shares the SVL Flexline platform with SVA-S/SVA-L shut-off, REG-SA/REG-SB regulating, SCA-X/CHV-X check valves and FIA strainers of the same nominal size.

Standards

Approvals

Attached Documents