Danfoss SFA 15 safety relief valve, G 1/2 in x 3/4 in, set pressure 20 bar (290 psig), Danfoss pressure certificate

Danfoss SFA 15 angle-way safety relief valve, code 148F3220, set pressure 20 bar (290 psig). The SFA 15 is a standard, direct-loaded, back-pressure-dependent safety relief valve specially designed to protect pressure vessels and other refrigeration components against excessive pressure. The spring housing is closed tightly to avoid refrigerant leakage. On a rise in pressure above the set pressure the valve initially starts to open slightly; it is fully open before the pressure is 10% above the set pressure and fully closed before the pressure is 10% below the set pressure. Inlet connection 15 mm (G 1/2 in) outside pipe thread to ISO 228/1, outlet 20 mm (3/4 in); inlet flow diameter (do) 13 mm (0.512 in), flow area (A0) 133 mm2 (0.206 in2), de-rated certified discharge coefficient (Kdr) 0.73, effective discharge area 97 mm2 (0.150 in2). Housing is special steel approved for low-temperature operation; spindle, cone and seat are stainless steel, and the cone gasket is a special chloroprene (neoprene) compound. Applicable for the refrigerants HCFC, HFC, R717 (ammonia) and R744 (CO2) within a temperature range of -50 to 100 C (-58 to 212 F); below -30 C full tightness is only guaranteed when the refrigerant pressure is equal to or lower than 0.5 x set pressure. The set pressure is adjusted and sealed at the Danfoss factory; supplied with a Danfoss pressure certificate. PED 2014/68/EU conformity assessment category IV, fluid group I, 13 mm nominal bore. Specifications per Danfoss store code 148F3220.

Type

SFA 15 standard back-pressure-dependent safety relief valve

Code number

148F3220

Series

SFA (refrigeration safety relief valve)

Set pressure

20 bar g (290 psig)

Pressure-setting range (family)

10 to 40 bar g (145 to 580 psig)

Direction

Angle-way

Inlet connection

15 mm (G 1/2 in) outside pipe thread, ISO 228/1

Outlet connection

20 mm (3/4 in)

Inlet flow diameter (do)

13 mm (0.512 in)

Flow area (A0)

133 mm2 (0.206 in2)

De-rated certified discharge coefficient (Kdr)

0.73

Effective discharge area (A0 x Kdr)

97 mm2 (0.150 in2)

Opening characteristic

fully open before +10% of set pressure; fully closed before -10% of set pressure

Housing material

special steel approved for low-temperature operation

Spindle, cone and seat material

stainless steel

Cone gasket

special chloroprene (neoprene) compound

Media temperature range

-50 to 100 C (-58 to 212 F)

Low-temperature note

below -30 C full tightness only guaranteed when refrigerant pressure <= 0.5 x set pressure

Applicable media

HCFC, HFC, R717 (ammonia), R744 (CO2)

Conformity assessment

PED 2014/68/EU, category IV, fluid group I

Classification (per OEM datasheet)

DNV, CRN, BV, EAC (contact Danfoss for current list)

Pressure certificate

Danfoss pressure certificate supplied with each valve

Approvals

CE, EAC

Net weight

1.926 kg

Gross weight

1.966 kg

EAN

5702428194068

Size / Series

G 1/2 in inlet x 3/4 in outlet

Material

Special low-temperature steel housing; stainless steel spindle, cone and seat

Thread Standard

ISO 228/1

Pressure Rating

20 bar (290 psig) set pressure

Temperature Range

-50 to 100 C

HS Code

8481.40