Brass Push-to-Connect Pneumatic Bulkhead Union Fittings — 4mm 6mm 8mm 10mm 12mm

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Brass Push-to-Connect Pneumatic Bulkhead Union Fittings — 4mm 6mm 8mm 10mm 12mm

Name: Brass Push-to-Connect Pneumatic Bulkhead Union Fittings — 4mm 6mm 8mm 10mm 12mm
Brand: HomeDIYer
Price: 3.79 USD
Availability: InStock

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Size: PM-4mm

Quantity(Pcs): 1 Pcs

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$3.79 USD

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Brass Push-to-Connect Pneumatic Bulkhead Union Fittings — Mount Through Panels Without Leaks

Routing compressed air lines through enclosure walls, machine panels, or cabinet bulkheads is a common headache for pneumatic system builders, automation technicians, and serious DIYers. A loose connection or mismatched fitting can mean pressure drops, air leaks, and hours of troubleshooting. These brass push-to-connect pneumatic bulkhead union fittings are designed to eliminate that frustration — giving you a secure, panel-mounted pass-through that connects tubing on both sides with a single push.

Each fitting is machined from solid brass with a threaded body for panel mounting and push-fit collet ends on both sides. Available in five tube OD sizes — PM-4mm (≈5/32"), PM-6mm (≈1/4"), PM-8mm (≈5/16"), PM-10mm (≈3/8"), and PM-12mm (≈1/2") — and sold in quantities of 1, 2, 5, or 10 pieces so you can stock exactly what your project needs.

Typical applications include pneumatic control panel wiring, air-line pass-throughs in CNC enclosures, workshop compressor distribution manifolds, and automated machinery where clean bulkhead routing is required. The one-touch connection design makes these ideal for quick-connect pneumatic fittings for air compressor lines and push-fit tube fittings for panel mounting.

ℹ️ Compatibility: Designed for rigid and semi-rigid pneumatic tubing (PU, PA/nylon, PE) with matching outer diameter. Verify your tube OD before ordering. PTFE tape recommended on threaded body for leak-free panel installation.

✅ Key Features of These Brass Pneumatic Bulkhead Union Push Fit Fittings

🔩Solid Brass Construction — Machined from brass for reliable corrosion resistance and durability in compressed air systems, outperforming plastic push-fit fittings in demanding shop environments.
⚡One-Touch Push-to-Connect Ends — Tool-free tube insertion on both sides; the internal collet grabs and locks the tube instantly, making these quick-connect air line fittings fast to install and reconfigure.
🏗️Threaded Bulkhead Body — The threaded center section passes through a panel cutout and secures with a locknut, creating a clean, vibration-resistant pass-through for pneumatic tubing through enclosure walls.
📐Five Tube Sizes Available — Covers PM-4mm through PM-12mm OD tubing, making it straightforward to match your existing pneumatic line diameter without adapters or reducers.
🔄Reusable & Reconfigurable — The collet release mechanism allows the tube to be removed and reinserted repeatedly without damaging the fitting, supporting iterative builds and system modifications.
📦Flexible Quantity Options — Available in 1, 2, 5, or 10-piece sets so you can buy a single fitting for a repair or stock up for a full panel build — no need to over-order.

📐 Technical Specifications — Brass Pneumatic Bulkhead Union Push Fit Fittings

Fitting Type	Bulkhead Union (straight through, panel-mount)
Connection Style	Push-to-connect (push-fit collet) both ends
Material	Brass (body & collet housing)
Available Tube OD Sizes	PM-4mm (≈5/32"), PM-6mm (≈1/4"), PM-8mm (≈5/16"), PM-10mm (≈3/8"), PM-12mm (≈1/2")
Compatible Tubing	PU, PA (nylon), PE pneumatic tubing — matching OD required
Body Thread	See variant options / Contact us to confirm pitch & standard
Working Pressure	Typically up to ~150 PSI (≈10 bar) — contact us to confirm by size
Working Temperature	Generally suitable for standard shop/industrial ambient temperatures
Finish	Natural brass
Quantity per Order	1 Pcs / 2 Pcs / 5 Pcs / 10 Pcs (select above)
Application	Pneumatic panel wiring, air-line bulkhead pass-throughs, automation enclosures

⚠️ Note: Thread pitch and panel cutout diameter vary by size. If you are integrating these into a precision panel or manifold, please contact us to confirm exact thread and body dimensions before ordering.

❓ Frequently Asked Questions

How do I choose the right tube size for these bulkhead fittings?

Match the fitting size to your tubing's outer diameter (OD) — not the inner diameter. PM-4mm fits 4mm OD tubing (≈5/32"), PM-6mm fits 6mm OD (≈1/4"), PM-8mm fits 8mm OD (≈5/16"), PM-10mm fits 10mm OD (≈3/8"), and PM-12mm fits 12mm OD (≈1/2"). If you are unsure, measure your existing tube with calipers before ordering.

What is the maximum working pressure these fittings can handle?

Brass push-to-connect pneumatic fittings of this type are generally rated for working pressures up to approximately 150 PSI (≈10 bar) at room temperature. Actual ratings may vary by size. Contact us to confirm the pressure rating for your specific variant before use in high-pressure applications.

Can these bulkhead fittings be used outdoors or in humid environments?

Brass offers good corrosion resistance for most indoor and sheltered outdoor applications. For prolonged exposure to salt spray, standing water, or highly corrosive environments, additional sealing or stainless steel alternatives are typically recommended. In standard workshop or factory conditions, brass performs reliably.

What thread standard do these fittings use?

These are threaded bulkhead union fittings with a threaded body for panel mounting. The thread standard is generally metric-compatible for standard pneumatic panel applications. If you need to confirm compatibility with a specific pitch, BSP, or NPT standard, please contact us before ordering to avoid mismatches.

Do I need any tools or sealant to install these fittings?

The push-fit ends are completely tool-free — push the tube in until it clicks and it locks automatically. The threaded body section requires a wrench for panel mounting. PTFE tape is generally recommended on the threaded portion to ensure a leak-free seal against the panel.

Are these fittings compatible with polyurethane (PU) and nylon (PA) tubing?

Yes. Brass push-to-connect fittings of this type are typically compatible with PU, PA (nylon), and PE pneumatic tubing of the matching outer diameter. They are not recommended for soft silicone tubing without a tube insert, as silicone may not hold securely in the collet.

How do I release the tube from a push-fit fitting?

First, depressurize the air line. Then press the collet ring (the outer ring at the fitting mouth) inward while simultaneously pulling the tube out. The collet releases the internal grab ring, allowing the tube to slide free without damage to the tube or fitting.

🛒 Select your size and quantity above, then add to cart — ships from our US warehouse.

Brass Push-to-Connect Pneumatic Bulkhead Union Fittings — 4mm 6mm 8mm 10mm 12mm

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Description

Brass Push-to-Connect Pneumatic Bulkhead Union Fittings — Mount Through Panels Without Leaks

✅ Key Features of These Brass Pneumatic Bulkhead Union Push Fit Fittings

📐 Technical Specifications — Brass Pneumatic Bulkhead Union Push Fit Fittings

❓ Frequently Asked Questions

Brass Push-to-Connect Pneumatic Bulkhead Union Fittings — 4mm 6mm 8mm 10mm 12mm

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