General Technical Data

Size 4

ROSS - Double Valves with Pneumatic

Sizes 8, 12, 30

Double Valves with Pneumatic L-G Monitor, Ports 1:2 to 2 ROSS CONTROLS FLUTECH THAILAND Size 8 Size 12 Size 30
Pilot Solenoids Two, rated for continuous duty. Standard voltages: 100-110 volts 50 Hz.; 100-120 volts 60 Hz.; 24, 110 volts DC. Other voltages available.
Power Consumption 
Size 4- Each solenoid, 30 VA inrush, 16 VA holding on 50 or 60 Hz.; 11 watts on DC. Sizes 8,12,30- Each solenoid, 87 V A inrush, 30 V A holding on 50 or 60 Hz; 14 watts on DC.
Electrical Connections 
Size 4 uses cord-grip connectors at solenoids. Order connectors separately on Crossflow Size 4; terminal strip on Sizes 8, 12, and 30.
Ambient Temperature
40° to 120°F (4° to 50°C
Media Temperature 
40° to 175°F (4° to 80°C)
Flow Media
Filtered air. 5 micron recommended.
Inlet Pressure 
Size 4 – 30 to 100 psig (2 to 7 bar). Sizes 8,12,30- 30 to 125 psig (2 to 8.5 bar).
L-G Reset Pressure 
Size 4 – Remote pneumatic reset models require a pressure of at least 30 psig (2 bar). Manual reset models use internal valve pressure. Sizes 8,12,30- 60 psig (4 bar) minimum.
Inlet Port 
Models are available with the inlet port on either the right or the left side of the valve body (size 4 only).

Size 4

Port Size Average Cv Monitor Reset Dimensions inches (mm) Weight lb. (kg.) Valve Model Numbers Size
In-Out Out-Exh. A B C Right Inlet Left Inlet
G 3/8 3.0 6.00 Manual 7.4 (188)
6.3 (160)
7.4 (188) 8.3 (3.7) 4
G 3/8 3.0 6.00 Remote 7.4 (188) 6.3 (160) 7.4 (188) 8.3 (3.7) 4
G 1/2 3.0 8.00 Manual 7.4 (188) 6.3 (160) 7.4 (188) 8.3 (3.7) 4
G 1/2 3.0 8.00 Remote 7.4 (188) 6.3 (160) 7.4 (188) 8.3 (3.7) 4
G 3/4 3.0 9.00 Manual 7.4 (188) 6.3 (160) 7.4 (188) 8.3 (3.7) 4
G 3/4 3.0 9.00 Remote 7.4 (188) 6.3 (160) 7.4 (188) 8.3 (3.7) 4
Series 35 SERPAR® Crossflow Double Valves – L-G Monitor Size 4 Flu-Tech Thailand Ross Controls

Sizes 8, 12, and 30

Port Size Average Cv Dimensions inches (mm) Weight lb. (kg.) Valve Model Numbers Size
In-Out Out-Exh. A B C with Overrides without Overrides
G 1/2 3.5 8.5
8.5 (216)
7.1 (180)
12.3 (312)
15.3 (6.9) 8
G 3/4 4.0 12
8.5 (216)
7.1 (180)
12.3 (312)
19.0 (8.6)
8
G 3/4 8.0 15
9.0 (228)
8.5 (216)
13.4 (340)
19.0 (8.6)
12
G 1 4.0 12
8.5 (216)
7.1 (180)
12.3 (312)
15.3 (6.9)
8
G 1 8.5 19
9.0 (228)
8.5 (216)
13.4 (340)
19.0 (8.6)
12
G 1-1/4 9.0 21
9.0 (228)
8.5 (216)
13.8 (351)
19.0 (8.6)
12
G 1-1/4 20 42
12.4 (314)
11.1 (282)
17.7 (450)
37.5 (16.9)
30
G 1-1/2 21 43
12.4 (314)
11.1 (282)
17.7 (450)
37.5 (16.9)
30

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