Max Adapter Compression Fittings For All Your Plumbing Needs
Could one simple coupling shift the way you complete jobs and cut callbacks?
You need reliable connections that match common pipe sizes without extra fuss. At Installation Parts Supply, you get 3 8 male compression fitting parts that simplify sealing and alignment so your installs look clean and stay strong under pressure.
Use these couplings for sewer drainage, gravity flow runs, and fast repairs on iron, plastic, or steel piping. Their built-in rubber sealing gasket design helps resist shear forces and assists with pipe alignment to create a tight, serviceable joint.
You’ll also value the documented specs such as temperature range, nominal diameter fit, and vibration guidance so you can plan the job and choose compatible valves and accessories quickly.
At Installation Parts Supply, you can shop confidently knowing you’ll receive genuine parts, quick shipping, and friendly support, helping you get back to work with minimal surprises.
Installation Parts Supply: Your Source for Reliable Compression Connections
Why these fittings are a good choice for quick, leak-resistant hookups
Choose components that give you consistent pipe alignment and a secure sealing gasket without extra tools. You get fast, serviceable connections that work well for under-sink hook-ups, appliance lines, and light sewer repair tasks.
The product range includes options that are compatible with copper, plastic, and certain steel components. Materials such as 304 series stainless and other series stainless steel parts boost corrosion resistance in wet applications.
- Assemble with basic hand tools for a tight mechanical seal when you follow torque guidance.
- Serviceable joints let you disassemble for maintenance without solder or glue.
- Suitable for potable water, gravity flow, and many sewer drainage applications; avoid locations with high vibration or high heat.
- Nationwide stock plus friendly support help you choose the right coupling and get parts quickly.
| Material Type | Best Applications | Key Feature |
|---|---|---|
| 304 series stainless | Potable water and light sewer work | Strong corrosion resistance |
| Brass body | Fixture lines, appliances | Pliable, easier to install in cold conditions |
| Ductile iron / cast iron | Sewer repair, gravity flow | Durable under burial and heavy loads |
| Plastic (with insert) | Low-pressure lines | Lightweight; avoid high shear forces |
Max Adapter Compression Fittings: Features, Specs, and Performance
You get clear, measurable specs so you can select the right coupling for every job confidently, without guesswork.
You’re working with brass bodies built for copper, aluminum, and thermoplastic pipe. When using plastic tubing, you should add the correct insert to maintain tube support and secure a proper seal.
Temperature range runs from -65°F to +250°F (-53°C to +121°C). Such a wide window covers cold basements as well as warm mechanical rooms and remains within rated pressure limits.
Construction Materials
Brass construction pairs with rubber sealing components for shear resistance and reliable sealing. Series stainless steel parts, like 304 series stainless, are offered for corrosion-prone installs.
Operating Limits
These couplings are designed for low- to medium-pressure liquid lines. They are not recommended for use on steel tubing or any gaseous media. Vibration resistance is moderate; select a long nut when added resistance to movement is needed.
Standards and tolerances
The machining is held to +/- .02″ tolerance and meets ASA, ASME, and SAE requirements. Light Pattern (“L”) versions change thread length but remain interchangeable with full pattern parts.
- Not lead free; they’re intended for plumbing and light industrial work such as sewer repair and routine coupling swaps.
- Check tube temperature ratings so all components stay within the fitting’s acceptable envelope.
- Keep movement to a minimum to preserve ferrule grip and prolong rubber seal life.
| Specification | Value | Additional Notes | Recommended Use |
|---|---|---|---|
| Material Options | Brass / 304 series stainless options | Rubber seal and securing cage available | Copper, aluminum, and thermoplastic pipe |
| Temperature | -65°F to +250°F | Refer to tubing temp for max pressure | Cold water, warm mechanical rooms |
| Tolerance | +/- .02″ | ASA / ASME / SAE conformance | Precise alignments and repeatable torque settings |
| Limits | No steel tubing / no gaseous media | Fair vibration resistance; long nut for more | Low/medium pressure liquid applications |
With these spec-driven parts in stock at Installation Parts Supply, you can satisfy jobsite requirements with confidence and minimal surprises.
Applications, Pipe Compatibility, and Installation Notes
Confirming material compatibility before you cut a tube saves time and prevents leaks later.
You can use these couplings with copper, aluminum, and thermoplastic tubing. When you use plastic tube, add the correct insert to support the wall and preserve the seal.
These parts, built for low- to medium-pressure liquid lines, suit fixture supplies, appliance hookups, and light sewer repair jobs. They are not rated for gaseous media or steel tubing, so you should avoid those applications to remain within safe limits.
Installation tips
- Cut the tubing square and deburr lightly so the ferrule can seat evenly.
- Align the tube axis into the body and hand-start the nut to avoid cross-threading.
- Bring the fitting up gradually to the recommended turn-of-nut, then recheck once the line is pressurized.
- In higher vibration areas, use a long nut and support neighboring runs to cut down movement.
- Leave enough clearance for future service so you can reach the nut, ferrule, and cage when inspection or repair is required.
| Material | Best Use | Notes |
|---|---|---|
| Copper / Aluminum | Fixture and appliance lines | Straightforward installs with good sealing when torqued correctly |
| Thermoplastic | Low-pressure water lines | Insert required to support tube wall |
| Steel | Not recommended | Avoid using; select couplings rated specifically for steel tubing instead |
Count on Installation Parts Supply to provide the correct inserts, long nuts, and accessory parts you need for a smooth install. Follow the checklist—confirm tube material, add an insert for plastic, align properly, tighten to spec, and recheck—to reduce callbacks and keep jobs on schedule.
Pricing, Availability, and Related Solutions
Find clear pricing and fast availability so you can plan materials and labor with confidence.
Certain manufacturers require retailers to adhere to a Minimum Advertised Price (MAP) rule. When an item is under MAP, the lowest price appears only after you add the product to your cart. You can see that price without committing to purchase and remove the item at any time.
Online Pricing: How It Works
Under MAP policies, the checkout process reveals the final low price for qualifying items. This protects manufacturer programs while still giving you price transparency. If you’re price-checking, add to cart to see the real offer, then remove it if you’re not ready.
Related Options and Cost-Saving Combos
Savings are often available when you choose bundled parts or purpose-built valves rather than individual pieces.
- At $12.92 each, the John Guest Angle Stop Max Adapter Valve (SKU PPASV-6) is commonly less expensive than buying a separate coupling plus valve.
- Bundles reduce part count, speed installs under sinks, and lower return risk by matching compatible components like cage inserts and clamping system pieces.
- With fast fulfillment and clear inventory, you can line up pipe, steel parts, and sewer repair components to keep jobs on track.
| Purchase Option | Primary Use | Notes/Details |
|---|---|---|
| Single coupling | Custom assemblies and unique builds | Flexible but may need extra parts |
| Angle Stop Valve (PPASV-6) | Fixture shutoff point | \$12.92; lower total cost than separate parts |
| Bundle (Valve + Insert) | Under-sink installations | Speeds work; fewer callbacks |
Choose Installation Parts Supply for competitive prices, fast turnaround, and bundled solutions that make your cart simpler to manage.
Final Thoughts
When every joint matters, choosing the right part and support speeds installs and reduces callbacks.
You choose a practical, code-conscious solution for liquid supply lines when you pick the correct product and follow the installation guidance. Match copper, aluminum, or thermoplastic tubing (use an insert for plastic) to get a reliable seal that’s easy to service later.
Avoid steel tubing and any gaseous media to keep installations safe and within spec. Use recommended valves along with the proper cage and accessories to enhance vibration resistance and long-term performance for sewer and fixture work.
Installation Parts Supply stands ready to help you choose the right Max Adapter Compression Fittings and ship them quickly anywhere in the United States. If you need help, support is available from selection through checkout so you can finish clean, on time, and on budget.
Common Questions
Which types of pipes are compatible with these compression connectors?
These compression connectors work with copper, aluminum, and many thermoplastic pipes, provided you use a proper insert for softer plastics. They are not recommended for standard steel tubing or for any pressurized gaseous media. When working with cast iron, ductile iron, asbestos cement, and PVC sewers, verify the product’s nominal diameter and sealing gasket compatibility before installation.
Which materials are used in these connectors?
The bodies are brass, supported by stainless steel components in key areas, and a pliable rubber sealing gasket to help ensure leak resistance. Some variants feature 304 series stainless steel parts along with a high-impact securing cage or clamping system to add strength and durability.
How do these connectors perform under vibration and shear forces?
They are designed to withstand vibration and moderate shear forces, using steel click-lock clamping and a cast iron or ductile iron rated cage in heavy-duty models. A rubber sealing gasket maintains a tight seal, and the clamping system absorbs movement to reduce the chance of joints loosening.
Are these fittings suitable for cold-weather installation?
Yes. The rubber gasket remains pliable for easier install cold conditions, and stainless steel components resist embrittlement. For best results, follow torque guidelines and allow extra time for alignment when temperatures are very low.
Which operating pressure and temperature limits apply to these connectors?
These connectors generally operate in low-to-medium pressure plumbing applications and temperature ranges from about -65°F to +250°F for compatible materials. Always confirm the specific model’s rating, particularly when working close to the upper temperature or pressure limits.
Are these connectors built to industry standards?
Many meet ASA/ASME/SAE tolerances with tight dimensional control (often +/- .02). You should review model certifications and material listings to confirm compliance with your project’s codes.
Are pipe inserts necessary when using plastic pipe?
Yes. For most thermoplastic pipes, an insert is recommended to prevent deformation and maintain proper sealing. The insert helps keep alignment and reduces the risk of leaks or failures under pressure.
How do I ensure proper pipe alignment during installation?
Clean and square the pipe ends, use a guide or insert for plastics, and engage the click-lock clamping evenly. The securing cage and clamping system high-impact design help keep alignment while you tighten to recommended torque values.
Are these connectors suitable for sewer repair and gravity flow systems?
Yes, certain models are suitable for sewer repair and gravity flow drainage provided they’re sized correctly for the nominal diameter and the rubber sealing gasket is compatible with wastewater. Verify compatibility with iron, cast iron, and asbestos cement pipe types if they are part of the run.
How do pricing and availability work when ordering online?
Pricing often follows MAP policy, so you may see the lowest available price only after the item is in your cart at checkout. Installation Parts Supply and similar vendors list related options like angle stop valves and cost-saving combos; compare those to choose the best solution for your budget and job.
What related options should I consider for cost savings?
Search for bundled valve-and-coupling combinations, angle stop adapters, and multi-pack deals. Choosing stainless steel click-lock models only in areas where they’re necessary can save money while still putting steel components where strength matters most.
How long can the rubber sealing gasket last in typical sewer or drainage use?
Service life depends on exposure to chemicals, abrasion, and temperature. For most sewer and gravity-flow applications, a high-quality rubber gasket used with stainless steel components can offer many years of service. Be sure to inspect periodically and replace the gasket if you observe hardening or cracking.