Mellow PC4-M7 Pneumatic Bowden Coupler for 1.75mm PTFE Tube
Mellow PC4-M7 Pneumatic Bowden Coupler for 1.75mm PTFE Tube
Mellow NF PC4-M7 Pneumatic Quick Coupler – Bowden Extruder Fitting for 1.75mm PTFE Tube
Upgrade your 3D printer's filament path with the Mellow NF PC4-M7 Pneumatic Connector — a precision-engineered aluminum alloy quick coupler designed specifically for all-metal DDG (Direct Drive with Gear) extruder setups. This fitting seamlessly converts a short-distance direct drive configuration into a long-distance Bowden setup, connecting your Bowden hot end via a PTFE (Teflon) tube with a secure, tool-free push-fit connection.
Key Features
- All-Metal DDG Compatible: Engineered for all-metal DDG wind extruders — ideal for remote Bowden tube configurations.
- M7 Thread: Standard M7 male thread for reliable, secure mounting into compatible hot ends and extruder blocks.
- PC4 Push-Fit Collet: Tool-free quick-connect design accepts 4mm OD / 1.75mm ID PTFE tubing instantly.
- Aluminum Alloy Construction: Lightweight yet durable CNC-machined aluminum alloy body resists heat and wear over extended print runs.
- No Assembly Required: Ready to install straight out of the box — just push in your PTFE tube and print.
- Length: 23.5 mm — compact form factor fits tight extruder housings without clearance issues.
- NF Quality Supervised: Part of the Mellow NF high-quality product series, held to strict QC standards for consistent, reliable performance.
Specifications
| Brand | Mellow (NF Series) |
| Model | 10PC4M7 |
| Thread Type | M7 |
| Inside Diameter | 4 mm (PC4) |
| Length | 23.5 mm |
| Material | Aluminum Alloy |
| Compatible Tube | 1.75 mm PTFE / Teflon Tube |
| Assembly Required | No |
| Country of Origin | Made in Mainland China |
Package Contents
Available in 1-piece, 3-piece, or 5-piece packs — choose the quantity that best suits your build or workshop needs.
- 1 / 3 / 5 × M7 Bowden PC4 Quick Coupler Connector(s)
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Frequently Asked Questions
Q: What 3D printer extruders are compatible with the PC4-M7 pneumatic connector?
A: The Mellow NF PC4-M7 is designed for all-metal DDG (Direct Drive with Gear) extruders that accept an M7 thread. It is widely compatible with popular 3D printer extruder blocks and hot ends that use an M7-threaded port, allowing you to route 1.75mm PTFE tubing for a Bowden-style remote setup.
Q: What size PTFE tube does this coupler accept?
A: This PC4-M7 quick coupler is designed for 4mm OD PTFE (Teflon) tubing, which is the standard size for 1.75mm filament Bowden setups. Simply push the tube firmly into the collet for a secure, leak-free connection.
Q: Is any special tool needed to install or remove the PTFE tube?
A: No special tools are required. The push-fit PC4 collet design allows you to insert the PTFE tube by hand. To release, press down on the collet ring while gently pulling the tube — it's a quick and easy process.
Q: How many connectors are included in the pack?
A: You can choose from a 1-piece, 3-piece, or 5-piece pack depending on your needs. This is ideal whether you're upgrading a single printer or stocking spare parts for your workshop.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.