Ross Controls EXPLOSION-PROOF VALVES SERIES 27 User Manual
Explosion-Proof
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New Product
Information
Solenoid Pilot Controlled
2/2 Valves
Normally Closed (NC) Normally Open (NO)
3/2 Valves
Normally Closed (NC)
12
4/2 Valves
Normally Open (NO)
Solenoid Pilot Poppet Valves
for Line Mounting
2/2, 3/2 & 4/2
Normally Closed & Normally Open
Series 27
STANDARD SPECIFICATIONS:
Solenoids: AC or DC power.
Standard Voltages: 24 volts DC.
Power Consumption: 4.6 watts.
Ambient Temperature: 40° to 120°F (4° to 50°C).
Media Temperature: 40° to 175°F (4° to 80°C).
Solenoid Temperature: -4° to 140°F (-20° to 60°C).
Flow Media: Filtered air.
Inlet Pressure:
1/4 to 1½ Port Sizes: 15 to 150 psig (1 to 10 bar);
1½ to 2½ Port Sizes: 30 to 150 psig (2 to 10 bar).
Threads: NPT, BSPP port threads.
CSA APPROVED, for use in the following
hazardous locations:
CLASS I, Zone 1
CLASS I, Div. 1, Group A, B, C and D
CLASS I, Div. 2, Group A, B, C and D
CLASS II, Group E, F and G
CLASS III
Ex m II, T4
GENERAL:
Explosion-proof solenoid pilot controlled valves are ideal for
applications in a wide range of industries and environments
where safety from electrical ignition of flammable gases,
vapors, flammable liquids, combustible dust, or easily ignitable
fibers is a concern.
FEATURES:
• Solenoidpilotcontrolled
• Poppet construction for near zero leakage & high dirt tolerance
• Self-cleaning
• Wear compensating
• Repeatability throughout the life of the valve
External pilot supply option available, consult ROSS.
Explosion-Proof solenoid pilot valves for use
in High Temperature and Low Temperature Service
also available, consult ROSS.
For additional information consult your ROSS distributor or call ROSS Technical Services
in the U.S.A. at 1-888-TEK-ROSS (835-7677).
www.rosscontrols.com
2/2 Valves
Single Solenoid Pilot Controlled
B
3/2 Valves
B
Port Valve Model Number* Avg. CV Dimensions inches (mm)
Size NC NO NC NO A B C lb (kg)
Weight
1/4 2771B2002 2772B2002 2.3 2.3 3.6 (91) 3.2 (79) 9.0 (229) 3.0 (1.4)
3/8 2771B3002 2772B3002 3.8 3.3 3.6 (91) 3.2 (79) 9.0 (229) 3.0 (1.4)
C
1/2 2771B4012 2772B4012 4.0 3.5 3.6 (91) 3.2 (79) 9.0 (229) 3.0 (1.4)
1/2 2771B4002 2772B4002 7.7 6.5 4.6 (116) 3.2 (79) 9.0 (229) 3.6 (1.6)
3/4 2771B5002 2772B5002 9.0 7.3 4.6 (116) 3.2 (79) 9.0 (229) 3.6 (1.6)
1 2771B6012 2772B6012 9.0 7.9 4.6 (116) 3.2 (79) 9.0 (229) 3.6 (1.6)
1 2771B6002 2772B6002 24 21 6.7 (169) 4.1 (104) 12.0 (305) 7.5 (3.4)
1¼ 2771B7002 2772B7002 29 20 6.7 (169) 4.1 (104) 12.0 (305) 7.5 (3.4)
1½ 2771B8012 2772B8012 29 21 6.7 (169) 4.1 (104) 12.0 (305) 7.5 (3.4)
A
1½ 2771B8002 2772B8002 49 49 8.7 (219) 5.2 (131) 13.0 (330) 16.0 (7.3)
2 2771B9002 2772B9002 57 57 8.7 (219) 5.2 (131) 13.0 (330) 16.0 (7.3)
2½ 2771B9012 2772B9012 64 72 8.7 (219) 5.2 (131) 13.0 (330) 16.0 (7.3)
* NPT pressure port threads, for BSPP threads add a “D” prefix to the model number e.g., D2771B2002.
Port Sizes Valve Model Number Avg. CV Dimensions inches (mm)
Weight
In-Out Exh. NC NO NC NO A B C lb (kg)
1/4 1/2 2773B2002 2774B2002 2.8 2.5 3.6 (91) 3.2 (79) 9.0 (229) 2.5 (1.2)
3/8 1/2 2773B3002 2774B3002 4.0 3.0 3.6 (91) 3.2 (79) 9.0 (229) 2.5 (1.2)
1/2 1/2 2773B4012 2774B4012 3.8 3.0 3.6 (91) 3.2 (79) 9.0 (229) 2.5 (1.2)
1/2 1 2773B4002 2774B4002 7.8 7.2 4.6 (116) 3.6 (92) 9.0 (229) 3.3 (1.5)
3/4 1 2773B5002 2774B5002 9.4 7.2 4.6 (116) 3.6 (92) 9.0 (229) 3.3 (1.5)
C
1 1 2773B6012 2774B6012 10 7.2 4.6 (116) 3.6 (92) 9.0 (229) 3.3 (1.5)
1 1½ 2773B6002 2774B6002 29 21 6.7 (169) 4.9 (123) 12.0 (305) 7.0 (3.2)
1¼ 1½ 2773B7002 2774B7002 31 22 6.7 (169) 4.9 (123) 12.0 (305) 7.0 (3.2)
1½ 1½ 2773B8012 2774B8012 31 21 6.7 (169) 4.9 (123) 12.0 (305) 7.0 (3.2)
1½ 2½ 2773B8002 2774B8002 69 58 8.7 (219) 6.4 (161) 13.0 (330) 16.5 (7.4)
A
2 2½ 2773B9002 2774B9002 70 60 8.7 (219) 6.4 (161) 13.0 (330) 16.5 (7.4)
2½ 2½ 2773B9012 2774B9012 71 55 8.7 (219) 6.4 (161) 13.0 (330) 16.5 (7.4)
* NPT pressure port threads, for BSPP threads add a “D” prefix to the model number e.g., D2773B2002.
4/2 Valves
Port Sizes Valve Model Avg. Dimensions inches (mm) Weight
In-Out Exh. Number C
1/4 1/2 2776B2002 2.5 4.0 (100) 3.9 (97) 8.0 (203) 1.9 (0.9)
3/8 1/2 2776B3002 3.6 4.0 (100) 3.9 (97) 8.0 (203) 1.9 (0.9)
1/2 1/2 2776B4002 3.7 4.0 (100) 3.9 (97) 8.0 (203) 1.9 (0.9)
C
1/2 1 2776B4002 6.9 4.7 (118) 5.3 (135) 10.0 (254) 4.2 (1.9)
3/4 1 2776B5002 8.2 4.7 (118) 5.3 (135) 10.0 (254) 4.2 (1.9)
1 1 2776B6012 8.9 4.7 (118) 5.3 (135) 10.0 (254) 4.2 (1.9)
B
1 1½ 2776B6002 23 6.5 (166) 8.3 (211)
1¼ 1½ 2776B7002 24 6.5 (166) 8.3 (211)
A
1½ 1½ 2776B8012 25 6.5 (166) 8.3 (211)
* NPT pressure port threads, for BSPP threads add a “D” prefix to the model number e.g.,
D2771B2002.
2 ROSS CONTROLS
V
A B C lb (kg)
12.0 (305)
12.0 (305)
12.0 (305)
®
11.0 (5.0)
11.0 (5.0)
11.0 (5.0)
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