autotrol 278 series

HOME  | VALVES & GAUGES | AUTOTROL VALVES | 278 SERIES

autotrol 278 series

Flow Rates (valve olny)
Service @15 psi (1.03 bar) drop5.7 m3/h
Backwash @ 25psi (1.72) bar drop4.5 m3/h
ServiceCv = 6.50 (Kv = 5.6)
BackwashCv = 4.00 (Kv = 3.5)
Regeneration Operation
Controller Configuration700 series electronic controller
Regeneration Configuration5-cycle regeneration sequence
Softener regeneration sequence (278 series)Backwash, draw, slow rinse, fast rinse, refill, service (times programmable by installer)
Valve Connections / Dimensions
Tank Thread2-1/2 inches - 8 male
Inlet / Outlet1 3/4 inches - 12 UNC-2A male
Drain line3/4 inch NPT male
Brine line3/8 inch NPT male
Distributer tube diameter1050 inches (27mm)
Distributer tube length1 1/2 inches above top of tank
Design Specifications / Ratings
Valve bodyGlass filled Noryl - NSF listed material
Rubber compoundsCompounded for cold water - NSF listed materials
Valve materials certificationNSF/ANSI 44 rated component for material safety
weight (valve with control)5.34 lbs (2.42kg)
Recommended operating pressure20-120 psi (1.38 - 8.27 bar)
Canada20-100 psi (1.38 - 6.89 bar)
Hydrostatic test pressure300 psi (20.69 bar)
Water temperature35º - 100 ºF (2º - 38ºC)
Ambiant temperature35º - 120 ºF (2º - 48.9ºC)

Need Help?

IWE stock a complete range of valves and spares, most of which are available to buy online. If you can’t the part you require please call us on

01629 363311

we are more than happy to help.