Brass Double Compression Fittings — Straight, 90° Elbow & Shut Off Valve

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Brass Double Compression Fittings — Straight, 90° Elbow & Shut Off Valve

Name: Brass Double Compression Fittings — Straight, 90° Elbow & Shut Off Valve
Brand: HomeDIYer
Price: 31.13 USD
Availability: InStock

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Size: 6mm (Straight)

Amount: 1 Pcs

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$31.13 USD

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Brass Double Compression Fittings — Reliable Leak-Free Connections for Straight, Elbow & Shut-Off Applications

Whether you're rerouting a water supply line, adding an isolation point under a sink, or making a tight 90° turn in a confined cabinet, finding a fitting that seals reliably without soldering is a constant challenge for plumbers and serious DIYers alike. These brass double compression fittings deliver a tool-free, leak-resistant connection that holds up to everyday household water pressure — no torch, no flux, no mess.

Each fitting is machined from solid brass and uses a dual-ferrule compression design that grips the pipe OD firmly when the nut is tightened. Available in three configurations — Straight, 90° Elbow, and Shut-Off Valve (Female×Male or Female×Female) — with metric sizes ranging from 6mm to 16mm (≈1/4" to 5/8") and imperial threaded sizes from 1/8" to 1/2". The 10mm×15mm reducer straight variant also accommodates mixed-diameter runs in a single fitting.

Typical use cases include connecting copper or rigid plastic tubing in kitchen and bathroom supply lines, installing isolation valves for appliances such as dishwashers and washing machines, and making right-angle direction changes in under-sink or boiler-room plumbing — all scenarios where a compact, no-solder brass compression fitting for water supply lines is the practical choice.

🔵 Compatibility Note: Metric sizes (6mm–16mm) suit copper and rigid plastic tubing measured by outer diameter. Imperial threaded sizes (1/8"–1/2") generally follow BSP thread standards. Verify your pipe OD and thread type before ordering.

✅ Key Features of These Brass Double Compression Fittings

🔩Dual-Ferrule Compression Seal — The double-ferrule design creates two independent sealing points on the pipe OD, reducing the risk of leaks under vibration or pressure fluctuation in household plumbing systems.
🛠️No Soldering Required — Tighten with a standard wrench — no torch, flux, or crimping tool needed. Ideal for DIY brass compression fitting installation in kitchens, bathrooms, and utility rooms.
📐Three Configuration Types — Choose straight, 90° elbow, or integrated shut-off valve to match your routing and isolation needs in a single compact fitting body.
⚙️Wide Size Range — Metric OD sizes from 6mm to 16mm and imperial BSP threaded sizes from 1/8" to 1/2" cover the most common residential pipe dimensions, including a 10mm×15mm reducer option.
🏗️Solid Brass Construction — Machined brass body resists corrosion in typical indoor water supply environments and maintains dimensional stability under repeated tightening cycles.
🚰Integrated Shut-Off Function — The valve variants allow flow isolation without cutting the pipe, making them a practical choice for appliance supply lines where future serviceability matters.

📐 Technical Specifications — Brass Compression Fittings

Material	Brass
Configuration Types	Straight, 90° Elbow, Shut-Off Valve (Female×Male / Female×Female)
Metric Sizes (OD)	6mm, 8mm, 10mm, 12mm, 14mm, 15mm, 16mm, 10mm×15mm (reducer)
Imperial Threaded Sizes	1/8", 1/4", 3/8", 1/2"
Thread Standard	Generally BSP — contact us to confirm NPT compatibility
Compatible Pipe Materials	Copper, brass, rigid HDPE/nylon tubing (matching OD)
Compression Type	Double (dual-ferrule)
Installation Method	Hand-start nut, tighten with adjustable wrench — no soldering
Finish	Natural brass
Quantity per Order	1 Pcs (per variant)
Working Pressure	See variant options — contact us to confirm for your application
Country of Origin	Contact us to confirm

⚠️ Spec Confirmation: Working pressure rating and thread standard (BSP vs. NPT) vary by variant. Please confirm your pipe OD, thread type, and system pressure with us before ordering if you have specific requirements.

❓ Frequently Asked Questions

How do I choose the right size compression fitting?

Match the fitting size to your pipe's outer diameter (OD). Metric sizes (6mm–16mm) suit copper or plastic tubing measured in millimeters. Imperial sizes (1/8"–1/2") suit threaded pipe connections. When in doubt, measure your pipe OD with calipers before ordering. As a reference: 10mm ≈ 3/8", 15mm ≈ 1/2", 16mm ≈ 5/8".

How strong is the connection made by a double compression fitting?

Brass double compression fittings generally provide a secure, vibration-resistant joint suitable for typical household water supply pressures. The dual-ferrule design distributes clamping force evenly, reducing the risk of pull-out under pressure. Always verify the fitting's rated working pressure matches your system requirements.

Can these fittings be used outdoors or in damp environments?

Brass has naturally good corrosion resistance and is typically suitable for indoor plumbing and moderately humid environments. For fully outdoor or marine applications, additional protection or stainless steel alternatives may be advisable. Contact us to confirm suitability for your specific environment.

What thread standard do the Female×Male and Female×Female variants use?

The threaded shut-off valve variants (1/8" to 1/2") generally follow BSP (British Standard Pipe) thread standards, which are widely used in plumbing fittings. If your system uses NPT threads, please contact us to confirm compatibility before ordering.

Do I need any special tools to install these compression fittings?

No soldering or crimping tools are required. A standard adjustable wrench or spanner is typically sufficient to tighten the compression nut. Avoid over-tightening, as this can deform the ferrule and compromise the seal.

What pipe materials are compatible with these fittings?

Brass double compression fittings are generally compatible with copper, brass, and rigid plastic (HDPE/nylon) tubing of matching outer diameter. They are not recommended for soft PVC or corrugated tubing without a support insert. Check your pipe material and OD before selecting a size.

What is the difference between the straight and 90° elbow versions?

The straight compression fitting connects two pipes in a direct line, ideal for extending a run. The 90° elbow fitting redirects the pipe at a right angle, useful when routing around obstacles or making corner turns in tight spaces such as under-sink cabinets.

Can the shut-off valve variants fully stop water flow?

Yes. The shut-off valve variants include an integrated valve mechanism that allows you to stop or regulate flow without cutting the pipe. This is particularly useful for isolating individual fixtures — such as a dishwasher or washing machine supply line — during maintenance or replacement.

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

Brass Double Compression Fittings — Straight, 90° Elbow & Shut Off Valve

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Brass Double Compression Fittings — Reliable Leak-Free Connections for Straight, Elbow & Shut-Off Applications

✅ Key Features of These Brass Double Compression Fittings

📐 Technical Specifications — Brass Compression Fittings

❓ Frequently Asked Questions

Brass Double Compression Fittings — Straight, 90° Elbow & Shut Off Valve

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