Danfoss | 148B5664
148B5664
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The 148B5664 is a stop check valve produced by Danfoss within the SCA Check and Stop Valves series for hydraulic automation where a single component must provide both isolation and automatic backflow prevention. Its stainless steel connections resist corrosion in chemically aggressive fluids. A nominal size of 40 mm permits direct welding to medium-diameter lines, and the ends are supplied for butt-weld assembly to create a seamless joint that tolerates vibration. Tube dimensions conform to EN 10220, letting installers match common stock without modification. An angleway pattern diverts flow through ninety degrees, simplifying compact skid layouts. The valve lifts from the seat when differential pressure exceeds 0.04 bar to maintain tight shutoff below this threshold. Internal cavity volume is 8.931 L, leaving space for media expansion without excessive pressure loss.
The design sustains working pressures up to 52 bar so it can be mounted on high-pressure supply manifolds. It operates within a temperature window from −60 °C to 150 °C, covering cold-storage brines and hot-oil flushes with one part number. When fully open, the flow capacity is rated at Cv 34.8 gallons per minute, which corresponds to Kv 30 m³/h for metric calculations. These coefficients allow engineers to anticipate pressure drop and select appropriate pump heads. Smooth internal passages support the stated capacity by minimizing turbulence. The assembly weighs 3.488 kg, keeping manual handling straightforward during installation or service.
Technical Specifications
Connection Material
Stainless Steel
Connection Size
40 mm
Connection Standard
EN 10220
Connection Type
Butt Weld
Flow Coefficient Cv
34.8 gal/min
Flow Coefficient Kv
30 m3/h
Flow Path
Angleway
Max Working Pressure
52 bar
Min Opening Diff Pressure
0.04 bar
Net Weight
3.488 kg
Temperature Max
150 °C
Temperature Min
-60 °C
Valve Function
Stop Check Valve
Volume
8.931 L
1620 Old Apex Road
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