BUC Pneumatic Manual Hand Valve | Push-to-Connect Inline Shut-Off
BUC Pneumatic Manual Hand Valve | Push-to-Connect Inline Shut-Off
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Short Product Description
Short Product Description
Instantly isolate and control airflow in your pneumatic circuits with theBUC Series Pneumatic Manual Hand Valve. Designed for 4mm, 6mm, 8mm, and 10mm outer diameter (OD) PU or Nylon tubing, this inline push-to-connect (PTC) switch allows you to safely cut off air supply to specific machine parts without shutting down the main compressor. Featuring a double-layer leak-proof seal and a durable PBT/nickel-plated brass body, it handles up to 1.0 MPa (145 PSI). Need to verify your tube size?Sun Cheong Computer Co. Ltd.offers over 20 years of automation expertise. Visit our Sham Shui Po physical store for instant pickup and hands-on testing!
Key Features
Key Features
- Instant ON/OFF Control: A simple quarter-turn of the top lever instantly opens or isolates the airflow in your pneumatic circuit.
- Instant PTC Connection: Tool-free push-to-connect design securely grips 4mm, 6mm, 8mm, or 10mm PU/Nylon air tubing in a fraction of a second.
- Double-Layer Sealing: Advanced internal dual O-rings ensure a flawless, leak-proof connection up to 1.0 MPa (145 PSI).
- Stainless Steel Claws: High-tension internal grip rings prevent the air hose from blowing out under high pressure.
- Corrosion Resistant: Constructed from durable nickel-plated brass and high-strength PBT plastic for long-lasting industrial use.
- Directional Airflow: Clearly marked directional arrows on the body ensure correct installation for optimal sealing.
Full Product Description
Full Product Description
Instant Airflow Control for Safe Maintenance
When maintaining or modifying automated machinery, shutting down the entire factory air compressor is costly and inefficient. The BUC Pneumatic Manual Hand Valve acts as a localized isolation switch. By simply turning the top lever, you can instantly cut off the compressed air supply to a specific air cylinder, manifold, or pneumatic tool. This allows technicians to safely perform maintenance, change tooling, or clear jams without depressurizing the entire system.
Tool-Free Push-to-Connect Efficiency
Time is money on the assembly line. This inline valve features advanced Push-to-Connect (PTC) technology on both ends. Simply push your polyurethane (PU) or nylon air hose into the fitting, and the internal stainless steel claws will instantly lock it into place. To release the tube, ensure the air is shut off, press down the release ring, and pull. No hose clamps, compression nuts, or tools are required.
Industrial-Grade Leak-Proof Design
Pneumatic leaks cause compressors to overwork and waste energy. The BUC hand valve is engineered with a double-layer internal sealing ring to guarantee a 100% airtight connection, even under maximum operating pressures of 1.0 MPa (145 PSI). The main body is constructed from high-strength PBT plastic and nickel-plated brass, ensuring exceptional resistance to rust, corrosion, and the physical impacts common in busy workshops.
💡 Pro Tip from Our Technicians
"A very common mistake we see is customers confusing a 'Hand Valve' with a 'Speed Controller'. This BUC valve is strictly an ON/OFF isolation switch—it is not designed to regulate or slow down the speed of an air cylinder. If you need to control cylinder speed, you need a throttle valve. Also, remember that pneumatic tubing is measured by its Outer Diameter (OD). If you aren't sure whether you need the 4mm, 6mm, 8mm, or 10mm version, bring a snippet of your hose to our Sham Shui Po store! Our team at Sun Cheong Computer Co. Ltd. will measure it with digital calipers and get you the exact fit."
Technical Specifications
Technical Specifications
| Specification | Details |
|---|---|
| Available Models | BUC-4, BUC-6, BUC-8, BUC-10 |
| Applicable Tube OD | 4mm / 6mm / 8mm / 10mm |
| Valve Type | Inline Manual Hand Valve (2-Way ON/OFF) |
| Fluid Type | Compressed Air (Pneumatic Only) |
| Max Operating Pressure | 1.0 MPa (10 kgf/cm² / ~145 PSI) |
| Operating Temperature | -30°C to 60°C (-22°F to 140°F) |
| Applicable Tubing Material | Polyurethane (PU) / Nylon |
| Body Material | PBT Plastic & Nickel-Plated Brass |
| Total Length | BUC-4: 57mm | BUC-6: 61mm BUC-8: 63mm | BUC-10: 74mm |
Delivery Options
Delivery Options
- Local delivery within Hong Kong and in-store pickup.
- Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.
- Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).
- Estimated delivery time: 1–3 business days after dispatch (Hong Kong).
- In-store pickup details (location and time) will be confirmed by email or phone message.
- Delivery times are estimates and may be affected by weather or unforeseen circumstances.
FAQ Section
FAQ Section
- Can I use this valve to adjust the speed of my air cylinder?No. The BUC series is a manual directional control valve designed strictly for ON/OFF isolation. Turning the lever halfway will not provide accurate or stable flow control. If you need to adjust cylinder speed, you should purchase a pneumatic speed controller (throttle valve).
- How do I know which size to buy (BUC-4, 6, 8, or 10)?Pneumatic push-to-connect fittings are sized based on the Outer Diameter (OD) of the air tube. Use a caliper or a precise ruler to measure the outside width of your PU or Nylon hose. If it measures 6mm across, you need the BUC-6.
- How do I safely remove the air tube from the valve?First, ensure the air supply is turned off and the line is depressurized. Then, push the plastic release ring inward (towards the center of the valve) and hold it down while pulling the tube out. Never forcefully yank the tube without pressing the ring, as this will damage the internal stainless steel locking claws.
Target Users / Applications
Target Users / Applications
- Factory Automation Maintenance: Installing local shut-off valves before solenoid manifolds to allow for safe, localized machine repairs without draining the main compressor.
- Custom Air Ride Suspension Builders: Adding manual isolation valves to automotive air suspension lines for leak testing and maintenance.
- Aquarium & Hydroponics DIYers: Creating reliable, high-pressure ON/OFF switches for commercial air pumps and CO2 distribution lines.
- Animatronics & Prop Builders: Providing a manual safety shut-off for high-powered pneumatic cylinders used in stage effects.
