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2+2 gear air switch
The QF502A2+2-speed air switch is a combination valve consisting of two two-way air switches joined together in a single housing. The housing incorporates an interlock mechanism made up of two steel balls and a cylindrical pin, ensuring operational safety. This interlock mechanism guarantees that the other valve can only be operated when one of the valves is in neutral (its original position).
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Other pneumatic valves
I. Characteristics
The QF502A 2+2-shift air switch is a combination valve consisting of two two-way air switches assembled into a single housing. The housing incorporates an interlocking mechanism made up of two steel balls and a cylindrical pin, ensuring operational safety. This interlocking mechanism guarantees that the other valve can only be operated when one of the valves is in neutral (its original position).
The QF502A 2+2-position pneumatic switch is primarily used in the pneumatic systems of oil or geological exploration drilling rigs and workover rigs. Currently, its most common application is in the high- and low-speed control of oil-drilling rig drawworks.
II. Graphical Symbols
III. Technical Parameters
Nominal Diameter (mm) | 6 |
Nominal pressure (MPa) | 0.8 |
Leakage rate (ml/min) | ≤500 |
Effective cross-sectional area S (m㎡) | ≥10 |
Normal commutation performance | Reversing is flexible, accurate, and free of abnormal noises or jamming. |
Withstand Voltage Performance (MPa) | 1.2 |
Working environment temperature (℃) | -25~60 (Note: Products with low-temperature resistance down to -40℃ require special customization) |
4. External Dimensions and Installation Dimensions
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+86-631-5684177
Service hotline (same number on WeChat)
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Contact Address
No. 55 Dalian Road, High-Tech Industrial Development Zone, Weihai City, Shandong Province
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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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Contact now
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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