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8P-1S R431003806 P-055556-00003 Winch Control Valve Pneumatic Air Winch Control Valve for Sale
The eight-position shift valve has eight operating positions: reverse (R), neutral (N), and gears F1 through F6. The shift lever is evenly distributed along an arc between the reverse (R) position and the F6 gear, providing eight distinct positions.
Category:
Pneumatic components for oilfield equipment
1. Eight-position shift valve 8P-1S P55556-3 R431003806
II. Explanation
1. The eight-position shift valve features eight operating positions: reverse R, neutral N, and forward gears F1 through F6, with F4 serving as the intake port; F1, F2, F3,
Ports F5 and F6 are service ports, and the vent port is shown in the figure.
2. The gear shown in the diagram is F1; in the diagram, pressurized air enters through port 4 and the intake passage. | Cavity, at this moment | Pressurized air in the cavity enters 1 through the passages in the disc spool and valve plate.
6. Two working ports are pressurized, while the compressed air in the remaining working ports is exhausted through the exhaust passage and exhaust port of the disc spool, thereby relieving the load.
The wiring for the port openings on the bottom surface of the connecting plate is as follows: Ports 1, 2, 3, 5, and 6 are connected to the eight-position shift pneumatic cylinder; port 4 is connected to the system air supply and serves as the inlet port; port 7 remains unconnected and functions as the exhaust port.
III. Operating Principle
The eight-position shift valve has eight operating positions: reverse (R), neutral (N), and gears F1 through F6. The shift lever is evenly distributed along an arc between the reverse (R) position and the F6 position, covering all eight positions.
When the gear selector is in the neutral (N) position, the plunger 31 at the lower end of lever 4 depresses the external contact of the neutral safety switch 19, causing the internal contacts of the switch to close and thereby energizing the starter motor’s starting circuit.
In summary:
The control lever is in the neutral (N) position. Port 4 serves as the air inlet; connect the air supply and start the engine. At this point, ports 1 and 2 function as the output ports.
Move the handle lever to the neutral (N) and reverse (R) position. At this point, no air pressure is output from outlets 1, 2, 3, 5, 6, and 7.
Handle lever in R gear: 2-port output
Handle lever in F1 gear: 1, 6-port output
Handle lever in F2 gear: output ports 1, 3, and 6.
Handle lever shifts into F3 gear: outputs 1, 3, 5, and 6.
Handle lever in F4 gear: outputs at ports 1, 5, and 6.
Handle lever shifted to F5 gear: 1, 5-port output
Handle lever in F6 gear: 5-port output
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Large oilfield
Mine
Railway
Drilling machine
Well workover rig
Well-logging machine
Oil Production Plant
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Phone/Fax
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Service hotline (same number on WeChat)
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No. 55 Dalian Road, High-Tech Industrial Development Zone, Weihai City, Shandong Province
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