Description
PVDF Compression Union Fitting for Corrosive Fluid Lines
When a chemical feed line needs a straight repair or extension, metal couplings can corrode or add threaded joints. Jaco Kynar compression tube union connectors join two tubing sections without pipe threads, flaring, soldering, or solvent cement. Each PVDF compression union fitting grips tubing securely by outside diameter. The PVDF body resists chlorine, strong acids, and halogenated solvents used in chemical and water treatment systems.
Key Features and Benefits
- Each PVDF tube union connector joins matching tube ODs or reduces between two listed sizes. This tube-to-tube compression connector has no pipe threads, so it does not require PTFE tape.
- The Kynar PVDF tube fitting resists strong inorganic and organic acids, chlorine, bromine, hydrocarbons, and compatible solvents. It is not suitable for fuming sulfuric acid, concentrated alkalis, hot bases, or fluids above pH 12.
- Plastic gripper nuts provide a maximum published pressure of 220 PSI. Actual pressure capability depends on temperature, fluid, tubing, and mechanical conditions.
- The chemical resistant compression fitting installs without flaring, soldering, or solvent cement. Insert each tube fully to its stop before tightening the nut.
- PVDF is FDA compliant, NSF listed, autoclavable, and rated by JACO as self-extinguishing. For three-way tubing branches, use Jaco Kynar compression tube union tees.
Specifications
Each PVDF tube union connector is molded from polyvinylidene fluoride and uses JACO configuration 15 for standard or reducing unions.
| Specification | Details |
|---|---|
| Material | PVDF (Kynar) |
| Configuration | 15 Union and Reducing Union |
| Connection | Tube OD to Tube OD |
| Nut Type | Plastic Gripper (PG) |
| Maximum Published Pressure | 220 PSI with PG nuts |
| Material Temperature Range | -80°F to 275°F |
| JACO Fitting Working Range | -40°F to 250°F |
| Tensile Strength | 5,900 psi |
| Durometer | 75D |
| Impact Strength | Over twice the impact strength of PVC |
| Fire Rating | JACO-published V-O classification, self-extinguishing |
| Certifications | FDA compliant and NSF listed |
| Autoclavable | Yes |
| Compatible Tubing | Plastic tubing selected for PVDF service; match the fitting to tubing OD |
| Not Suitable For | Fuming sulfuric acid, concentrated alkalis, hot bases, or fluids above pH 12 |
Available Sizes
Measure the outside diameter of both tubing sections before ordering. Jaco Kynar compression tube union connectors use standard unions for matching ODs and reducing unions for different ODs. Available Cleanflow options use plastic gripper nuts rated to 220 PSI.
| First Tube OD | Second Tube OD | Union Type |
|---|---|---|
| 1/4 inch | 1/4 inch | Standard |
| 3/8 inch | 1/4 inch | Reducing |
| 3/8 inch | 3/8 inch | Standard |
| 1/2 inch | 3/8 inch | Reducing |
| 1/2 inch | 1/2 inch | Standard |
PVDF vs Nylon Compression Fittings for Union Connections
Choose PVDF for compatible lines carrying chlorine, bromine, strong acids, hydrocarbons, or halogenated solvents. Choose nylon for compatible dry-service lines carrying oils, fuels, or organic solvents. Nylon absorbs moisture and has poor resistance to strong acids and bases.
Both materials can use plastic gripper nuts rated to 220 PSI. Pressure alone should not determine the material. Check fluid chemistry, temperature, tubing OD, and nut compatibility before ordering. Compare the Jaco nylon compression tube union connectors for non-aggressive service.
To Install: How to Install Jaco Compression Fittings
- Cut each tubing end squarely, then remove internal and external burrs.
- Insert the tubing through the nut assembly until it reaches the tube stop.
- Hold the tubing firmly against the stop, then hand-tighten the nut.
- Wrench-tighten the nut 1.5 to 2 additional turns.
- Retighten every nut after the system reaches its projected operating temperature.
Fully insert each tube before tightening. If tubing is difficult to insert, loosen the nut one turn. Do not disassemble the fitting. A squeaking sound during tightening is normal. This union has no NPT connection, so PTFE tape is unnecessary.
Applications
- Chemical dosing lines: Join or reduce tubing in compatible chlorine, acid, and solvent feed systems.
- Water and wastewater treatment: Connect tubing across dosing, filtration, and disinfection equipment.
- Laboratory and pharmaceutical systems: Use the autoclavable Kynar PVDF tube fitting in compatible high-purity fluid lines.
- Food and beverage processing: Join process tubing where FDA-compliant fitting material is required.
This chemical resistant compression fitting supports straight tube repairs and extensions. Buyers can order Jaco compression fittings in Canada through the Jaco fittings collection.
Buy Jaco Kynar Compression Tube Union Connectors Online from Cleanflow
Cleanflow Utility Supply Company is an authorized Jaco Manufacturing supplier serving Canada and the United States. Cleanflow supplies Jaco compression fittings in Canada and ships them throughout the United States. Select Jaco Kynar compression tube union connectors by the outside diameter of both tubing sections.
Order with free shipping on purchases over $199 and a 30-day return policy. Email info@cleanflow.ca for returns, exchanges, or product questions.
Frequently Asked Questions
What is a PVDF compression union fitting?
This tube-to-tube compression connector joins two tubing sections through compression at both ends. It has no NPT connection. Standard unions join matching tube ODs, while reducing unions connect different ODs. JACO configuration 15 covers both types.
Do PVDF union fittings need PTFE tape?
No. JACO union connectors are tube-to-tube fittings without pipe threads, so PTFE tape is unnecessary. Tape is reserved for JACO male or female connectors with NPT ends. Insert each tube fully to its stop, then tighten both nuts.
Can PVDF fittings handle chlorine?
Yes, PVDF resists chlorine and other halogenated solvents, but system conditions still matter. JACO advises evaluating the fluid, temperature, tubing, pressure, and mechanical conditions. Shield chlorine service from direct UV because transmitted UV can make chlorine more aggressive.
What size Jaco Kynar union connector do I need?
Measure the outside diameter of both tubing sections. Choose a standard union when the ODs match or a reducing union when they differ. Cleanflow offers combinations from 1/4-inch to 1/2-inch OD. Select the exact two-end combination shown.
When should I choose PVDF instead of nylon?
Choose PVDF for strong acids, chlorine, bromine, and halogenated-solvent service. Nylon suits compatible dry systems carrying oils, fuels, or organic solvents. PVDF is also autoclavable. Verify chemical compatibility and temperature before selecting either material.
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