DEMA® MODEL 481-2
DUAL METERING KNOB WITH SOLENOID VALVES
INSTALLATION INSTRUCTIONS
I-767
Pg. 3 of 3
Rev. B-29542
Coil (Specify Voltage -- 24 VAC Or 12 VAC)
DESCRIPTION
Top Plug Screw
Check Valve Ball
Check Valve O-Ring
Check Valve Spring
Check Valve Core (Specify Model No.)
Water Nozzles (Part Of C Series Injectors)
Backup Washer (Part Of C Series Injectors)
NOTE: METERING BLOCK ASSEMBLY TURNED 90° FOR VIEWING
Dual Metering Knob Assy.
DESCRIPTION
Metering Screw (1 Req'd For 481-2)
Metering Tip (Specify Size)
(2 Req'd For 481-2-2) (None Req'd For 481-2T)
Plunger Assembly (EPDM Diaphragm & Spring)
Plunger Assembly (Viton Diaphragm & Spring)
Enclosing Tube Assembly
PART N0.
N0.
5
8
10
9
7
6
2
3
4
1
Metering Knob Screw
Hose Barb
O-Ring
Dual Metering Knob
Enclosing Tube Screw
100-25
41-2-14
41-2-15
41-7-14
66-11
481-2
23-7-2
100-24
100-15
23481-1
BODY
203C 203B
204C 204B
206C 206B
PART N0.
N0.
16
24-23
19
21
22
20
18
17
24-62
X23482
24-34-
25-29
13
14
15
11
12
41-14-1
24-24P
24-25
41-9C-1
15285
Core O-Ring
Repair Kit
Nameplate
17
15
18
16
21
ONLY ITEMS ABOVE THIS LINE ARE PART OF THE 481-2
22
14
6
2
3
1
19
20
8
7
5
10
9
4