Description
Nylon Compression Union Connector for Water Filtration, Tubing Repairs, and Size Transitions
A tubing run that falls short forces the installer to pull the whole line or add a threaded fitting where none belongs. Jaco nylon compression tube union connectors join two tube ends inline through compression on both sides, no pipe threads involved. Each nylon compression union connector grips the tubing OD with a one-piece molded ferrule, FDA compliant and NSF/ANSI/CAN listed.
Key Features and Benefits
- This FDA listed nylon compression fitting resists organic solvents, oils, fuels, and hydrocarbons. The Nylon 6 body eliminates galvanic corrosion at tubing joints where brass or steel couplings would shed metal into clean water lines.
- With the plastic gripper (PG) nut, this 220 PSI nylon tube fitting holds system pressure that the standard ferrule (O) nut cannot match at 50 PSI. Cleanflow stocks all sizes in the PG configuration. This nylon tube to tube connector fitting handles both extensions and repairs at full pressure.
- Both ends of the union connector accept tubing through compression. No pipe threads, no PTFE tape, no flaring, no soldering. Cut the tubing squarely, insert through the nut to the tube stop, hand-tighten, then wrench-tighten 1.5 to 2 additional turns. The nylon tube union fitting is ready to flow.
- Jaco nylon compression tube union connectors come in standard and reduced configurations. Standard unions join same-diameter tubing end to end. Reducing union transition between two different tube sizes in a single body, eliminating the need for extra adapters or pipe fittings in the line.
- Jaco molds these connectors from Nylon 6 with a tensile strength of 8,800 psi. The material meets FDA and NSF/ANSI/CAN standards for potable water and food contact. The one-piece molded ferrule eliminates two-piece nut-and-sleeve assembly, reducing leak points at every joint.
Specifications
Every nylon compression union connector in the Jaco catalog is molded from Nylon 6 with a tensile strength of 8,800 psi. This FDA listed nylon compression fitting meets NSF/ANSI/CAN standards for potable water and food contact applications.
| Material | Nylon 6 |
|---|---|
| Configuration | Union Connector (Tube OD to Tube OD) |
| Nut Types | Standard Ferrule (O), Plastic Gripper (PG) |
| Max Working Pressure | 220 PSI (PG nut) / 50 PSI (O nut) |
| Material Temperature Range | -40°F to 250°F |
| Tensile Strength | 8,800 psi |
| Durometer | 75D to 90D |
| Certifications | FDA compliant, NSF/ANSI/CAN listed |
| Compatible Tubing | Copper, plastic, aluminum, glass |
| Chemical Resistance | Good for organic solvents, oils, hydrocarbons |
| Moisture Absorption | Absorbs water over time (reduces stiffness) |
| Autoclavable | No |
| Fire Rating | Not rated |
| UV Resistance | Poor (avoid continuous sunlight) |
| Pipe Threads | None (tube-to-tube compression only) |
| PTFE Tape Required | No (no pipe threads) |
| Sizes Available | 11 total (7 standard union + 4 reducing union) |
| Country of Origin | USA (Berea, Ohio) |
| Manufacturer | Jaco Manufacturing (est. 1949) |
| Not Suitable For | Strong acids, strong bases, ammonium, boric acid, calcium sulfate, sulfuric acid, hydrochloric acid |
Available Sizes
Cleanflow stocks this 220 PSI nylon tube fitting in the plastic gripper (PG) configuration. Jaco manufactures 11 sizes total (7 standard + 4 reducing). Email info@cleanflow.ca for unlisted sizes or volume pricing.
| Tube OD (Side A) | Tube OD (Side B) | Type |
|---|---|---|
| 1/4" | 1/4" | Standard Union |
| 3/8" | 1/4" | Reducing Union |
| 3/8" | 3/8" | Standard Union |
| 1/2" | 3/8" | Reducing Union |
| 1/2" | 1/2" | Standard Union |
How to Install JACO Nylon Compression Tube Union Connectors
- Cut the end of the tubing squarely and remove all internal and external burrs.
- Insert the tubing through the back of the nut and through the nut assembly until it reaches the tube stop in the fitting body.
- Hold the tubing firmly against the tube stop, then hand-tighten the nut.
- Wrench-tighten the nut an additional 1-1/2 to 2 turns.
- Retighten all nuts when the system reaches its projected operating temperature.
Standard vs Reducing Unions: Matching Different Tube Sizes
A standard vs reducing union connector comes down to whether both tube ends share the same outside diameter. Standard unions connect matching sizes: 1/4" to 1/4", 3/8" to 3/8", 1/2" to 1/2". Use a standard union when extending a tubing run, splicing in a replacement section, or connecting two lengths of the same tubing.
Reducing unions connect two different tube diameters in one fitting body. A 3/8" to 1/4" reducing union steps the line down from one size to another without adding a separate adapter or pipe coupling. Use a reducing union when connecting equipment with different tubing ports, merging feed lines of different diameters, or transitioning between older and newer tubing sizes in retrofit work.
Both types use the same Jaco compression mechanism. No pipe threads on either end, no PTFE tape, no adapters between the union and the tubing. The compression nut grips the tube OD directly. For runs that need to change direction at a joint, pair these inline union connectors with Jaco Nylon Compression Tube Union Elbows, which provide 90-degree turns with the same tube-to-tube compression and no pipe threads.
Applications
This nylon union connector for water filtration handles the following inline tube-to-tube connections:
- RO system tubing repairs: splice damaged sections of 1/4" or 3/8" permeate and feed lines without replacing the entire run. Reducing unions transition between different tubing sizes at membrane housing connections.
- Potable water distribution: extend tubing runs to reach pressure tanks, under-sink filtration units, and point-of-use dispensers. The FDA compliant, NSF listed nylon body keeps the water path free of metal contamination.
- Food and beverage processing: join tubing segments in beverage dispensing lines, dairy equipment connections, and food-grade process piping where galvanic corrosion from metal couplings is not acceptable.
- Tubing extensions and field repairs: when a cut comes up short or a section fails mid-run, this nylon tube union fitting splices in a new section without disturbing the rest of the line. No draining, no rethreading, no rework beyond the joint itself.
- Equipment connections without pipe threads: when both sides of a connection are tubing OD (no threaded ports), the union connector joins them directly. For connections that terminate at a male or female pipe thread, use Jaco Nylon Compression Tube Male Connectors or Jaco nylon female connectors instead.
For chemical dosing, chlorine injection, or aggressive chemical service, nylon is not the right material. Use Jaco Kynar (PVDF) union connectors for chemical lines where strong acids, halogens, or corrosive chemicals attack nylon. Jaco compression fittings Canada buyers source both nylon and Kynar union connectors through Cleanflow.
Buy Jaco Nylon Compression Tube Union Connectors Online from Cleanflow
Cleanflow Utility Supply Company is an authorized Jaco Manufacturing supplier serving Canada and the United States with Jaco nylon compression tube union connectors in standard and reducing configurations.
Order your nylon compression union connector with free shipping on orders over $199 and a 30-day return policy. Email info@cleanflow.ca for returns, exchanges, or product questions.
Jaco compression fittings Canada customers order from Canadian inventory. See the full Jaco lineup at Cleanflow.
Frequently Asked Questions
What is a nylon compression union connector?
A nylon compression union connector joins two tube ends inline through compression on both sides. No pipe threads are involved. The Nylon 6 body grips each tube OD with a one-piece molded ferrule. Jaco makes 11 sizes in standard and reducing configurations for water filtration and food-contact tubing.
How do you join tubing with compression fittings?
Learning how to join tubing with compression fittings takes five steps. Cut squarely, remove burrs, insert through the nut to the tube stop, hand-tighten, then wrench-tighten 1.5 to 2 additional turns. Repeat on the other end. No PTFE tape is needed because union connectors have no pipe threads.
Are nylon fittings safe for drinking water?
Yes. Jaco nylon fittings are FDA compliant for food contact and NSF/ANSI/CAN listed for potable water. The Nylon 6 body does not leach contaminants. Municipal water systems, RO units, and food processing lines use this FDA listed nylon compression fitting for non-toxic connections.
What is the difference between standard and reducing union connectors?
A standard vs reducing union connector depends on tube diameter. Standard unions join same-size tubing (1/4" to 1/4"). Reducing unions connect different sizes (3/8" to 1/4") in one fitting body, eliminating adapters. Choose based on whether the tube diameters match.
What is the best nylon union connector for water filtration systems?
A nylon union connector for water filtration provides corrosion-free tube-to-tube connections at lower cost than brass. Jaco's Nylon 6 body is FDA compliant and NSF listed. This 220 PSI nylon tube fitting splices, extends, and transitions tubing in RO, potable water, and food-grade systems.















