Single Pilot Operated Check Valves
Single Pilot Operated Check Valves
Load Holding 27 Series
with Manual Trapped Pressure Relief 2-Way 2-Position, Pressure Controlled
VP
Ports Size
Valve Model Number*
CV
Weight lb (kg)
3/8
2751A3920
2.6
1.8 (0.8)
1/2
2751A4920
2.8
1.8 (0.8)
3/4
2751A5919
9.2
2.9 (3.1)
VLV
• CYL
BP
* NPT port threads. For BSPP threads, add a “D” prefix to the model number, e.g.,D2751A3920.
Valve Dimensions – inches (mm)
3/8-18 NPT
0.65 (16.5)
0.88 (22.3)
1.25 (31.8) 0.44(11.1)
Port Size 3/8
1/4-18 NPT Pilot Port
3.47 (88.1)
0.83 (21.0) 1.65 (41.9)
0.40 (10.2)
1.5 (38.1)
0.83 (21.0)
3.90 (99.1)
1/2-14 NPT
1/2-14 NPT 3.47 (88.1) 0.65 3.04 (77.1) (16.5)
0.875 (22.3)
Port Size 1/2
1.25 (31.8) (2X) 1/4-18 NPT Pilot Port
1.5 (38.1)
0.44 (11.1) 0.40 (10.2)
0.83 (21.0) 1.65 (41.9)
3.4-14 NPT 3.54 (89.9)
1.50 (38.1)
2.13 (54.0)
0.40 (10.1) 0.41 (10.3)
F
4.17 (105.9)
1.48 (37.5) (1/4-18 NPT Pilot Port
F4 0.83 (21.0)
3.90 (99.1)
3/4-14 NPT
Port Size 3/4
3/8-18 NPT
3.04 (77.1)
1.10 (28.0) 2.20 (55.9)
0.75 (19.1)
4.30 (109.2)
1.10 (28.0)
14
Single Pilot Operated Check Valve with Manual Trapped Pressure Relief Application
CIRCUIT FEATURES: • Trapped pressure between check valve and cylinder is exhausted when the manual relief button is pressed. • Cylinder moves as long as the control valve solenoid is energized. Use for continuous motion or jogging. • Cylinder remains stationary if neither control valve solenoid is energized, or if electrical signal is lost.
12
3 1
5 1
4
3
2
Single PO Check Valve VP
2 10
L-O-X® Valve (Lockout & Exhaust)
VLV
CYL
Vertical Cylinder
12
3-Position, Open-Center Control Valve
BP
STANDARD SPECIFICATIONS (for valves on this page): Construction: Poppet. Mounting Type: In-Line. Ambient/Media Temperature: 40° to 175°F (4° to 80°C).
Inlet Pressure: 15 to 150 psig (1 to 10.3 bar). Flow Media: Filtered air. Signal Pressure: Must be equal to or greater than inlet pressure.
IMPORTANT NOTE: Please read carefully and thoroughly all of the CAUTIONS, WARNINGS on the inside back cover. Online Version Rev. 10/02/17
www.rosscontrols.com
F5.15
Load Holding 27 Series
with Manual Trapped Pressure Relief 2-Way 2-Position, Pressure Controlled
VP
Ports Size
Valve Model Number*
CV
Weight lb (kg)
3/8
2751A3920
2.6
1.8 (0.8)
1/2
2751A4920
2.8
1.8 (0.8)
3/4
2751A5919
9.2
2.9 (3.1)
VLV
• CYL
BP
* NPT port threads. For BSPP threads, add a “D” prefix to the model number, e.g.,D2751A3920.
Valve Dimensions – inches (mm)
3/8-18 NPT
0.65 (16.5)
0.88 (22.3)
1.25 (31.8) 0.44(11.1)
Port Size 3/8
1/4-18 NPT Pilot Port
3.47 (88.1)
0.83 (21.0) 1.65 (41.9)
0.40 (10.2)
1.5 (38.1)
0.83 (21.0)
3.90 (99.1)
1/2-14 NPT
1/2-14 NPT 3.47 (88.1) 0.65 3.04 (77.1) (16.5)
0.875 (22.3)
Port Size 1/2
1.25 (31.8) (2X) 1/4-18 NPT Pilot Port
1.5 (38.1)
0.44 (11.1) 0.40 (10.2)
0.83 (21.0) 1.65 (41.9)
3.4-14 NPT 3.54 (89.9)
1.50 (38.1)
2.13 (54.0)
0.40 (10.1) 0.41 (10.3)
F
4.17 (105.9)
1.48 (37.5) (1/4-18 NPT Pilot Port
F4 0.83 (21.0)
3.90 (99.1)
3/4-14 NPT
Port Size 3/4
3/8-18 NPT
3.04 (77.1)
1.10 (28.0) 2.20 (55.9)
0.75 (19.1)
4.30 (109.2)
1.10 (28.0)
14
Single Pilot Operated Check Valve with Manual Trapped Pressure Relief Application
CIRCUIT FEATURES: • Trapped pressure between check valve and cylinder is exhausted when the manual relief button is pressed. • Cylinder moves as long as the control valve solenoid is energized. Use for continuous motion or jogging. • Cylinder remains stationary if neither control valve solenoid is energized, or if electrical signal is lost.
12
3 1
5 1
4
3
2
Single PO Check Valve VP
2 10
L-O-X® Valve (Lockout & Exhaust)
VLV
CYL
Vertical Cylinder
12
3-Position, Open-Center Control Valve
BP
STANDARD SPECIFICATIONS (for valves on this page): Construction: Poppet. Mounting Type: In-Line. Ambient/Media Temperature: 40° to 175°F (4° to 80°C).
Inlet Pressure: 15 to 150 psig (1 to 10.3 bar). Flow Media: Filtered air. Signal Pressure: Must be equal to or greater than inlet pressure.
IMPORTANT NOTE: Please read carefully and thoroughly all of the CAUTIONS, WARNINGS on the inside back cover. Online Version Rev. 10/02/17
www.rosscontrols.com
F5.15
