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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.
A. Drain Line Flow Control and Fitting Assembly Information
Drain Line Flow Control Order
Drain Line Fitting
¾"
V3162-007
¾"
V3162-010
¾"
V3162-013
¾"
V3162-017
¾"
V3162-022
¾"
V3162-027
¾"
V3162-032
¾"
V3162-042
¾"
V3162-053
¾"
V3162-065
¾"
V3162-075
¾"
V3162-090
¾"
V3162-100
1"
V3190-090
1"
V3190-100
1"
V3190-110
1"
V3190-130
1"
V3190-150
1"
V3190-170
1"
V3190-200
1"
V3190-250
1. The drain line flow control and fitting are located on top of the control valve and replaceable without the use of special tools.
2. 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).
3. 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.
PWSRTA Twin Alternating Series Softeners
Number on Drain Line Flow Control
No.
Backwash Flow Rate
007
010
013
017
022
027
032
042
053
065
075
090
100
090
100
110
130
150
170
200
250
37
Backwash Flow Rate
(gpm)
0.7
1.0
1.3
1.7
2.2
2.7
3.2
4.2
5.3
6.5
7.5
9.0
10.0
9.0
10.0
11
13
15
17
20
25
(lpm)
2.6
3.8
4.9
6.4
8.3
10.2
12.1
15.9
20.1
24.6
28.4
34.1
37.9
34.1
37.9
41.6
49.2
56.8
64.3
75.7
94.6
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