Worm Drive Hose Clamp - 12mm-20mm
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Product Information
Full details
This B&Q worm drive hose clamp is ideal for DIY enthusiasts, mechanics, and marine hobbyists who need a reliable, tool-free solution for securing hoses in low and high-pressure environments. Its primary benefit is the integrated butterfly key grip, which allows for precise, manual adjustments without requiring a screwdriver. However, users should note that the 12mm-20mm size range is specific, so verify your hose diameter before installation to ensure a proper fit.
All features
| Model Part Number | A21220-001 |
|---|---|
| Brand | B&Q |
Extended Product Information
FAQs
Can this be used on high-pressure hydraulic lines?
This clamp is designed for general purpose, automotive, and domestic use; it is not recommended for high-pressure hydraulic systems.
Is this clamp rust-resistant?
The clamp is manufactured to ISO9001 standards for durability, but in high-salinity marine environments, regular inspection and rinsing are recommended.
What is the smallest hose this will fit?
The clamp is designed for a minimum diameter of 12mm.
Can I use a screwdriver if the butterfly key is stuck?
Yes, the head is typically designed to accept a standard screwdriver if extra torque is needed, though manual use is intended.
Does the clamp come in other sizes?
This specific model is sized for the 12mm-20mm range. Other sizes are available under different B&Q part numbers.
Troubleshooting
Clamp will not tighten enough to stop a leak
Verify that the hose diameter is within the 12mm-20mm range. If the hose is too thin, the clamp will bottom out before achieving a seal.
Butterfly key is difficult to turn
Ensure the screw thread is free of dirt or debris. If resistance remains, check that the band is aligned straight within the housing.
Pros and Cons
Pros
- Tool-free installation via butterfly key
- High-quality build meeting ISO9001 standards
- Protects hose surfaces from shearing
- Reliable seal in high-pressure scenarios
Cons
- Limited to a 12mm-20mm diameter range
- Manual key may be difficult to turn in extremely tight spaces
- Not suitable for high-vibration environments where locking mechanisms are required
Setup, Compatibility & Care
- Measuring: Measure the outer diameter of your hose and fitting together. Ensure the total diameter is between 12mm and 20mm.
- Installation: Open the clamp, wrap it around the hose connection, and feed the band back into the worm drive housing.
- Tightening: Use the integrated butterfly key to rotate the screw clockwise until the clamp is snug. Do not overtighten, as this may strip the screw thread or deform the hose.
- Maintenance: Regularly inspect the clamp for signs of corrosion, especially in marine environments. Wipe with a clean, dry cloth to remove debris and moisture to prolong the life of the metal components.