Danfoss SCA-X 20 angleway stop/check valve, 20 mm (3/4 in) butt weld ASME B 36.10M Schedule 80, 52 bar, steel
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Product Description
Danfoss SCA-X 20 stop/check valve for the SVL Flexline industrial-refrigeration range, code 148B5309. The SCA-X combines a spring-loaded check (non-return) function with a hand-operated stop function: the guided cone permits flow in one direction only and closes against back-flow toward pumps, compressors and vessels, while the spindle under the vented cap allows the line to be shut off manually for service. This SKU is the angleway body in cold-resistant steel with 20 mm (3/4 in) butt-weld connections to ASME B 36.10M Schedule 80. Flow coefficient Kv 10 m3/h (Cv 11.6 gal/min); minimum opening differential pressure 0.04 bar (0.62 psi); flow direction marked by an embossed 1-way arrow. Internal backseating lets the spindle seal be replaced while the valve is under pressure. 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
- Type
- SCA-X 20 (SVL Flexline stop/check valve) Code number: 148B5309 Series: SCA-X (SVL Flexline) Function: Combined check (non-return) and hand-operated stop valve Nominal size: 20 mm (3/4 in) Flow direction: Angleway Connection: Butt weld (ASME B 36.10M Schedule 80) Housing material: Steel (cold-resistant) Kv value: 10 m3/h (Cv 11.6 gal/min) minimum opening differential pressure: 0.04 bar (0.62 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 groups: 1, 2 Approvals: CE Compliance: EU RoHS, China RoHS Net weight: 1.85 kg EAN: 5702428472654 Product group: Check valves Approval: LLC CDC EURO-TYSK CE mark: Yes China RoHS compliance: Yes Colour Paint: Reddish brown Connection Code: (2002:S80:20) Connection material: Steel Connection standard: ASME B 36.10M SCHEDULE 80 Cv value [gal/min]: 11.6 gal/min Direction: Angleway Equipment: Cap EU RoHS compliance: Yes Fluid Group: 1 Inlet connection size [in]: 3/4 in Inlet connection size [mm]: 20 mm Inlet connection type: Butt weld Kv value [m³/h]: 10 m³/h Max. Working Pressure [bar]: 52 bar Max. Working Pressure [psig]: 754 psig MinODP [bar]: 0.04 bar MinODP [psi]: 0.62 psi Outlet connection size [in]: 3/4 in Outlet connection size [mm]: 20 mm Outlet connection type: Butt weld PED category: Art. 4, par. 3 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 Valve version: Standard version
Standards & Compliance
- Size / Series
- 20 mm
- Material
- Steel
- Pressure Rating
- 52 bar
- Temperature Range
- -60 to 150 C
- HS Code
- 8481.30
Compatibility & Fitment
Danfoss SVL Flexline SCA-X stop/check valve. Select by nominal size (20 mm / 3/4 in), flow body (angleway) and connection standard (ASME B 36.10M Schedule 80 butt weld). EN 10220 and ASME B 36.10M weld-end preparations are not interchangeable — confirm the mating pipe schedule before ordering. The SCA-X adds a hand stop to the check function; where check-only is required, use the CHV-X of the same size. Mount with the embossed arrow in the direction of intended flow.
Product Documentation
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Technical guides
- Cross-Referencing Danfoss Refrigeration Components by IMPA and OEM Code
- Danfoss Product Code Decoder — 003Z, 013G, 017B, 023U, 027L, 032F, 060G, 060H, 065B, 065Z, 068Z, 084H, 132F, 148B Series (Complete Reference)
- Danfoss Maneurop MTZ Reciprocating Compressors — Model Range, Voltage Codes and Replacement Guide
Catalogue entry last verified: 2026-08-30. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy 148B5309?
- 148B5309 can be ordered from cballast.com as a Danfoss catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
- What is the manufacturer part number for this Danfoss product?
- The manufacturer part number is 148B5309.
- What is the HS code for 148B5309?
- The customs tariff (HS) code for 148B5309 is 8481.30.
- Who manufactures 148B5309?
- 148B5309 is a Danfoss product in the HVAC & Refrigeration range.
- Is a datasheet available for 148B5309?
- Yes — the 148B5309 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 148B5309?
- The minimum order quantity is 1.
- Is 148B5309 available?
- Yes — 148B5309 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).