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Eight-way shift valve 8P-1S R4310003806 workover rig oilfield valve
We possess extensive experience and a highly skilled technical team, enabling us to provide customers with high-quality products and services that meet diverse needs. We are committed to delivering comprehensive solutions and exceptional service. If you require our products or services, please feel free to contact us—our entire team is dedicated to serving you. The eight‑position shift valve features eight distinct operating positions: reverse (R), neutral (N), and forward gears F1 through F6. The lever is evenly spaced along an arc between the reverse (R) and sixth forward gear (F6) positions.
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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, F2, F3, F4, F5, and F6, with four of these serving as intake ports; F1, F2, F3, and…
Ports F5 and F6 are service ports, and the vent port is shown in the figure.
2. The gear position shown in the diagram is F1. In the figure, pressurized air enters through port 4 and the intake passage. | Cavity, at this moment | The pressurized air in the cavity enters through the passages of the disc valve core and the valve plate, 1.
6. Two working ports; the compressed air in the remaining working ports is discharged through the exhaust passage and exhaust port of the disc valve spool, thereby relieving pressure.
The wiring for the holes on the bottom surface of the connecting plate is as follows: Holes 1, 2, 3, 5, and 6 are connected to the eight‑position shift cylinder; hole 4 is connected to the system air supply and serves as the inlet port; hole 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 lever is evenly spaced along an arc between the reverse (R) position and gear F6, providing eight distinct positions.
When the gear selector is in the neutral (N) position, the rocker tab 31 at the lower end of lever 4 presses down on the external contact of the neutral‑lock switch 19, closing the internal contacts of the switch and energizing the starter circuit of the starting motor.
In summary:
The control lever is in the neutral (N) position. Port 4 serves as the air inlet; connect it to the air supply and start the engine. At this point, ports 1 and 2 function as output ports.
Move the handle lever to the position midway between the N and R gears. At this point, no air pressure is output from outlets 1, 2, 3, 5, 6, and 7.
Handle lever shifted into R gear: 2 outputs.
Handle lever in F1 gear: output at ports 1 and 6.
Handle lever in F2 gear position: outputs at ports 1, 3, and 6.
Handle lever in F3 gear position: outputs 1, 3, 5, and 6.
Handle lever in F4 gear position: outputs at ports 1, 5, and 6.
Handle lever in F5 gear: 1, 5-port output
Handle lever shifted into F6 gear: 5-port output
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+86-631-5684177
Service hotline (same number on WeChat)
+8615588424700
Contact email
whzhpc.business@whzhpc.com
Contact Address
No. 55 Dalian Road, High-Tech Industrial Development Zone, Weihai City, Shandong Province
Application fields
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Large oilfield
Mine
Railway
Drilling machine
Well workover rig
Well-logging machine
Oil Production Plant
Large oilfield
Mine
Railway
Drilling machine
Well workover rig
Well-logging machine
Oil Production Plant
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Need help? We’re here to help!
Phone/Fax
+86-631-5684177
Service hotline (same number on WeChat)
+8615588424700
+8613561811500
Contact email
whzhpc.business@whzhpc.com
Contact Address
No. 55 Dalian Road, High-Tech Industrial Development Zone, Weihai City, Shandong Province
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