Ross Controls RIGHT ANGLE - Manual (Page 13)

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Series 27 Manual L-O-X ® Valves with EEZ-ON ® Operation
L-O-X ® handle open and pilot not ener-
gized. Pilot air is blocked by the pilot. Any
downstream pressure forces piston B (which
slides on the valve stem) upward. This opens
the exhaust port and vents the downstream
line.
L-O-X ® handle open and pilot energized.
Pilot air forces piston B downward to close
the exhaust port. Pilot air also flows past the
adjusting needle, opens the ball check and
begins slowly to pressurize the outlet line.
At the same time, pressure is building up
on piston A.
L-O-X ® handle closed. At any time the
L-O-X ® handle can be pushed inward,
thereby closing off the flow of pilot air. Pilot
air above pistons A and B is then vented to
atmosphere. Piston A moves upward and
closes inlet poppet C. Sliding piston B also
moves upward to open the exhaust port and
vents the downstream line.
Full Pressure. When the pressure on piston
A reaches approximately 50 percent of inlet
pressure, it is forced downward and opens
inlet poppet C. Full inlet pressure now flows
freely to the outlet port.
STANDARD SPECIFICATIONS:
Solenoid Pilot Ambient Temperature: 40 o to 120 o F (4 o to 50 o C).
Media Temperature: 40 o to 175 o F (4 o to 80 o C).
Internal Air Pilot Ambient/Media Temperature:
40
o to 175 o F (4 o to 80 o C).
Flow Media: Filtered air; 5 micron filter recommended.
Inlet Pressure: 42 to 150 psig (2.9 to 10.3 bar).
*Body Paint: Yellow.
*Port Threads: NPT standard, BSPP. For BSPP threads, insert a
“D” after “Y” to the model number, e.g. , YD2773B2075.
NOTE: Per specifications and regulations, these products are
defined as energy isolation devices,
NOT AS EMERGENCY
STOP DEVICES.
These unique valves give pneumatic circuits the soft start-up of the
EEZ-ON
® valves plus the lockout and exhaust capabilities of L-O-X ®
valves. They are available with either solenoid or air pilots.
Blue handle indicates that EEZ-ON ® function is included (L-O-X ® valves with red
handles do not have the EEZ-ON ® function).
Internal
Pressure Controlled
Solenoid
Pilot Controlled
VALVE OPERATION
1
2
C
A
3
PILOT
VALVE
B
1
2
C
A
PILOT
VALVE
B
1
2
C
A
PILOT
VALVE
B
1
2
C
A
3
PILOT
VALVE
B
A
B C
A
B
C
Adjusting Needle
For coordinating silencers, see page 18 (model numbers 5500A4003, 5500A6003, 5500A8001 and 5500A9002).
Port Size Valve Model Avg. Cv Dimensions inches (mm) Weight
In-Out Exh. Number* 1 to 2 2 to 3 A B C lb (kg)
Solenoid Pilot Controlled
1/4 1/2 Y2773B2075 2.5 3.1 7.1(181) 9.9 (253) 6.5 (165) 5.3 (2.4)
3/8 1/2 Y2773B3075 3.6 5.3 7.1(181) 9.9 (253) 6.5 (165) 5.3 (2.4)
1/2 1/2 Y2773B4085 3.3 5.3 7.1(181) 9.9 (253) 6.5 (165) 5.3 (2.4)
1/2 1 Y2773B4075 10.0 13.0 7.1 (181) 10.6 (269) 6.9 (175) 6.0 (2.7)
3/4 1 Y2773B5075 12.0 15.0 7.1 (181) 10.6 (269) 6.9 (175) 6.0 (2.7)
1 1 Y2773B6085 12.0 16.0 7.1 (181) 10.6 (269) 6.9 (175) 6.0 (2.7)
1 11/2 Y2773B6075 23.0 34.0 7.4 (188) 11.6 (296) 6.9 (175) 9.5 (4.3)
11/4 11/2 Y2773B7075 30.0 32.0 7.4 (188) 11.6 (296) 6.9 (175) 9.5 (4.3)
11/2 11/2 Y2773B8085 30.0 31.0 7.4 (188) 11.6 (296) 6.9 (175) 9.5 (4.3)
Internal Pressure Controlled
1 11/2 Y2783A6055 23.0 34.0 7.4 (188) 11.6 (296) 6.9 (175) 9.5 (4.3)
11/4 11/2 Y2783A7055 30.0 32.0 7.4 (188) 11.6 (296) 6.9 (175) 9.5 (4.3)
11/2 11/2 Y2783A8065 30.0 31.0 7.4 (188) 11.6 (296) 6.9 (175) 9.5 (4.3)
1
3
2 Y3
Internal Pressure Controlled Solenoid Pilot Controlled
Adjusting Needle