2/2 Valves

2-Way Normally Closed (N.C.)
ROSS CONTROLS 21 Series Single Solenoid Pilot Inline 2/2 Valves 2-Way Normally Closed (N.C.)
2-Way Normally Open (N.O.)

3/2 Valves

3-Way Normally Closed (N.C.)
Ross Controls 21 Series Single Solenoid Pilot Inline Valves Flu-Tech Thailand Distributor 3-Way 3/2 Valves Nomally Closed (N.C.)
3-Way Normally Open (N.O.)
Ross Controls 21 Series Single Solenoid Pilot Inline Valves Flu-Tech Thailand Distributor 3-Way 3/2 Valves Normally Open (N.O.)

4/2 Valves

4-Way

GENERAL TECHNICAL DATA

Solenoids AC or DC power
Power Consumption 87 VA inrush, 30 VA holding on 50 or 60 Hz; 14 watts on DC
Manual Override
Non-locking metal button
Ambient Temperature
Type H: -17° to 122°C / Type O: -40° to 50°C
Media Temperature
Type H: -17° to 150°C / Type O: -40° to 80°C (for temperatures below 4°C air must be free of water vapor to prevent formation of ice.)
Flow Media 
Filtered air (5 micron recommended)
Inlet Pressure
2 to 10 bar
Pilot Pressure 
When external supply is used, pressure must be equal to or greater than inlet pressure
Threads 
BSPP (for NPT threads, consult ROSS)
Average Cv
Ratings see corresponding Series D27

OVERALL DIMENSIONS inches (mm)

Port Size A B C D E F G H
1/4 to 1/2 3.6 (90) 7.0 (178) 3.0 (76) 7.3 (186) 3.6 (92) 3.8 (97) 7.7 (196) 3.9 (99)
1/2 to 1 4.6 (116) 7.7 (196) 3.0 (76) 8.0 (203) 4.6 (117) 5.2 (132) 9.7 (246) 4.6 (104)
1 to 1-1/2 6.6 (168) 10.5 (266) 4.1 (104) 10.5 (266) 6.6 (168) 8.2 (208) 11.1 (282) 6.5 (165)

VALVE MODEL NUMBERS for TYPE H (High Temperature) SERVICE

Port Size 2/2 Valves 3/2 Valves 4/2 Valves Weight lb. (kg)
In-Out Exhaust Normally Closed Normally Open Normally Closed Normally Open
G 1/4 G 1/2 3.0 (1.4)
G 3/8 G 1/2
G 1/2 G 1/2
G 1/2 G 1 3.3 (1.5)
G 3/4 G 1
G 1 G 1
G 1 G 1-1/2  7.5 (3.4)
G 1-1/4 G 1-1/2
G 1-1/2 G 1-1/2

VALVE MODEL NUMBERS for TYPE O (Low Temperature) SERVICE

Port Size 2/2 Valves 3/2 Valves 4/2 Valves Weight lb. (kg)
In-Out Exhaust Normally Closed Normally Open Normally Closed Normally Open
G 1/4 G 1/2 3.0 (1.4)
G 3/8 G 1/2
G 1/2 G 1/2
G 1/2 G 1 5.8 (2.6)
G 3/4 G 1
G 1 G 1
G 1 G 1-1/2 2171B6002 2172B6002 2173B6002  12.0 (5.4)
G 1-1/4 G 1-1/2 2171B7002 2172B7002 2173B7002 2174B7002 2176B7002
G 1-1/2 G 1-1/2 2171B8012 2172B8012 2173B8012 2174B8012 2176B8012

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