Drain line flow control and fitting assembly – Watts W100T Twin Alternating Series User Manual
Page 36
36 W100T Twin Alternating Series Softeners
Drain Line Flow Control and Fitting Assembly
The drain line flow control assembly includes a drain line flow control and a fitting. The drain line flow control allows proper media bed
expansion by regulating the flow rate to the drain. The drain line flow control is a flexible washer-like part with an orifice and a precision molded
contour. The flow rates are within ± 10% over the pressure range of 20 psi to 125 psi (1.4 bar to 8.6 bar). See table for flow rate information.
The drain line flow control and fitting are located on top of the control valve and replaceable without the use of special tools.
The drain line flow control can be installed in the standard ¾” drain line elbow, which accommodates 5/8” polytube or ¾” NPT drain line
connections. The optional nut and polytube insert for the ¾” drain line elbow is designed for use with flexible polytube only. The ¾” drain line
elbow can be rotated 180 degrees so the outlet can be orientated to the nearest drain. The same retainer is used for all drain line flow controls
for the ¾” fitting. Drain line flow controls designed for the 3/4” fitting are available for flow rates ranging from 0.7 to 10 gpm (2.6 to 37.9 lpm).
An optional 1” straight drain line fitting is available to accommodate drain line flow rates ranging from 9 to 25 gpm (34.1 to 94.6 lpm). This fitting
is straight but still connects to the control valve using the same locking clip. The drain line flow control is located between two fitted parts (i.e.
the fitting acts as the retainer). The nut is unscrewed to access the drain line flow control.
A. Drain Line Flow Control and Fitting Assembly Information
Drain Line Fitting
Drain Line Flow Control Order
No.
Number on Drain Line Flow Control
Backwash Flow Rate
(gpm)
Backwash Flow Rate
(lpm)
¾”
V3162-007
007
0.7
2.6
¾”
V3162-010
010
1.0
3.8
¾”
V3162-013
013
1.3
4.9
¾”
V3162-017
017
1.7
6.4
¾”
V3162-022
022
2.2
8.3
¾”
V3162-027
027
2.7
10.2
¾”
V3162-032
032
3.2
12.1
¾”
V3162-042
042
4.2
15.9
¾”
V3162-053
053
5.3
20.1
¾”
V3162-065
065
6.5
24.6
¾”
V3162-075
075
7.5
28.4
¾”
V3162-090
090
9.0
34.1
¾”
V3162-100
100
10.0
37.9
1”
V3190-090
090
9.0
34.1
1”
V3190-100
100
10.0
37.9
1”
V3190-110
110
11
41.6
1”
V3190-130
130
13
49.2
1”
V3190-150
150
15
56.8
1”
V3190-170
170
17
64.3
1”
V3190-200
200
20
75.7
1”
V3190-250
250
25
94.6