17
Specifications
255 Valve with 960 Control
Hydrostatic Test Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 psi (20.69 bar)
Working Pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 to 127 psi (1.38 to 8.76 bar), 100 psi max in Canada
Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 to 132 VAC 60 Hz
Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
o
to 120
o
F (1
o
to 18
o
C)
Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 to 100% condensing allowed
Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wall mount with plug options, rated for indoor use only
Water Flows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Accurate over range of 0.5 to 23 gpm (1.9 to 87 L/pm)
Pressure Tank Thread . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1/2 inch - 8 male
Brine Line Thread . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/4-inch NPT male
Distributor Tube Diameter Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13/16-inch (20.6-mm) OD
Distributor Tube Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1/4-inch (31.8-mm) higher than top of mineral tank
Standard Manifold Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3/4-inch NPT inlet-outlet, 3/8-inch NPT drain
Optional Manifold Connections. . . .1-inch NPT inlet-outlet, 1/2-inch NPT drain; 3/4-inch BSPT inlet-outlet, 3/8-inch
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BSPT drain; 1-inch BSPT inlet-outlet, 1/2-inch BSPT drain
Optional Bypass Valve. . . . . . . . .3/4-inch (19.1-mm) or 1-inch (25.4-mm) copper tailpiece, 1/2-inch NPT male drain
Valve Module, Tank Adapter, Optional Bypass Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reinforced Noryl
Inlet-Outlet Manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Brass or reinforced Noryl
Rubber Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Compounded for cold water service
Injector Size “A” White . . . . . . . . . . . . . Nozzle 0.042-inch (1.1-mm) diameter, Throat 0.089-inch (2.3-mm) diameter
Injector Size “B” Blue . . . . . . . . . . . . . . Nozzle 0.052-inch (1.3-mm) diameter, Throat 0.099-inch (2.5-mm) diameter
Injector Size “C” Red. . . . . . . . . . . . . . . Nozzle 0.059-inch (1.5-mm) diameter, Throat 0.099-inch (2.5-mm) diameter
Backwash Controllers Available for
6-, 7-, 8-, 9-, 10-, 12- inch (15.2-, 17.8-, 20.3-, 22.9-,
25.4-, 30.5-cm) dia. mineral tanks
All are sized to flow 4.5 gpm/sq ft (183 L/min/m
2
) of bed area.
255 Valve with 960 Timer
Inlet
Outlet
Drain
13-11/16 inch (347 mm)
6-3/8 inch (162 mm)
7-5/16 inch (185 mm)
1-1/4 inch (32 mm)
7
-15/16 i
n
ch (201 mm
)
4-1/16 inch (103 mm)
4-5/8 inch (117 mm)
1-1/2-inch (38 mm)
1-1/2-inch (38 mm)
1 inch (25 mm)
