Pentair FLECK 2850 SXT - Description; Technical Specifications

Installer manual Fleck 2850 SXT - Description
Ref. MKT-IM-030 / C - 12.05.2020 15 / 104
3 Description
3.1 Technical specifications
Design specifications/ratings
Valve body Brass
Rubber components EP or EPDM
Weight (valve with controller) 4.6 kg (max)
Recommended operating pressure 1.8 - 8.6 bar
Maximum inlet pressure 8.6 bar
Hydrostatic test pressure 20 bar
Water temperature std 1 - 43°C
Water temperature for HW volumetric 1 - 65°C
Water temperature for HW time clock 1 - 82°C
Ambient temperature 5 -40°C
Regeneration flow DF
Bypass of raw water during
regeneration:
Standard Yes
NBP version No
Flow rates (3.5 bar inlet - valve only - top mount)
Continuous service flow (Δp=1bar) 11.6 m
3
/h
Peak service flow (Δp=1.8bar) 15.0 m
3
/h
Cv* 13.2gpm
Kv* 11.4m
3
/h
Maximum backwash flow
(Δp=1.8bar)
11.1 m
3
/h
*Cv: Flow rate in gpm across the valve at a pressure drop of 1 psi at 60°F.
*Kv: Flow rate in m
3
/h across the valve at a pressure drop of 1 bar at 16°C.
Valve connections
Tank top mounted adapter 4” – 8 UN
Inlet/Outlet 1½" BSP female
Riser tube 50 mm [DN40]
Drain line 1" NPT
Brine line (1600/1650) ⅜"
Brine line (1700/1710) ½”