Straight Tube Union Connector

Straight Tube Union Connector

Engineered from virgin PFA and high-grade fluoropolymers, the straight tube union connector delivers reliable, leak-free inline joining for ultra-pure water and corrosive chemical fluid systems operating under demanding industrial conditions.

Product Overview

 

Engineered from virgin PFA and high-grade fluoropolymers, the straight tube union connector delivers reliable, leak-free inline joining for ultra-pure water and corrosive chemical fluid systems operating under demanding industrial conditions.

 

Key Features

 

Zero Contamination: Smooth wetted interior surfaces prevent particulate entrapment and bacterial growth.


Leak-Free Sealing: Precision-machined geometry ensures uniform radial compression across the tube circumference.


Thermal Endurance: Maintains structural integrity across continuous operating ranges from -60°C to +200°C.


Low Dead Volume: Minimized internal cavity prevents fluid retention and cross-contamination during batch switching.

 

Design & Connection Architecture

 

Union Straight: Direct inline coupling for connecting two parallel tubing runs of identical outer diameters.


Reducer Union: Stepped inner diameters engineered to transition fluid paths between different tubing sizes securely.


Nut-and-Gripper: Mechanical lock design that distributes gripping force evenly without deforming the tubing wall.


Reusable Assembly: Allows safe disconnection and re-tightening during routine system maintenance or reconfiguration.

 

Technical Specifications

 

Parameter

Imperial Specification

Metric Specification

Tubing Size (OD)

1/4", 3/8", 1/2", 3/4", 1"

6 mm, 8 mm, 10 mm, 12 mm, 19 mm, 25 mm

Primary Material

Virgin PFA, PTFE, PVDF

Virgin PFA, PTFE, PVDF

Max. Pressure

Up to 1.0 MPa (145 psi) at 20°C

Up to 1.0 MPa (145 psi) at 20°C

Temperature Range

-60°C to +200°C

-60°C to +200°C

 

Installation Guidelines

 

Tubing Preparation: Square-cut the tube end cleanly using a dedicated plastic cutter to ensure a flat, burr-free surface.


Component Sequencing: Slide the union nut and gripping components onto the tubing in the correct sequence prior to insertion.


Insertion Depth: Push the tubing firmly into the fitting body until it bottoms out against the internal tube stop.


Tightening Procedure: Hand-tighten the union nut, then apply specified wrench rotation turns (1 to 1-1/4 turns past finger-tight) to engage the seal.

 

Typical Applications

 

Semiconductor Wet Benches: Chemical delivery lines for hydrofluoric acid, sulfuric acid, and developer solutions in wafer fabrication.


Ultra-Pure Water Systems: High-purity distribution loops for semiconductor rinsing and electronic component cleaning.


Pharmaceutical Handling: Transfer lines for sterile buffers, purified water, and active pharmaceutical ingredient processing.


Chemical Processing: Corrosive reagent dosing lines, scrubber systems, and aggressive solvent transfer manifolds.

 

Customization Options

 

Resin Grade Selection: High-purity low-extractable PFA grades tailored for advanced semiconductor nodes.


Dimensional Adaptation: Non-standard reduction ratios and hybrid thread-to-tube configurations for OEM equipment.


Cleanroom Packaging: Double-bagged vacuum-sealed packaging performed inside ISO Class 4 cleanroom facilities.


Laser Marking: Custom part numbers, heat lot tracking codes, and client logos permanently etched onto fitting bodies.

 

Quality Assurance

 

Raw Material Testing: Fourier-transform infrared spectroscopy conducted on incoming resin batches to verify molecular purity.


Dimensional Metrology: Automated optical comparator measurements verifying thread pitch and internal bore tolerances within +/-0.05 mm.


Pressure Testing: 100% pneumatic proof testing performed on assembled union connectors prior to packaging.


Cleanliness Verification: Ion chromaIonraphy analysis ensuring metallic ion extractable levels remain below sub-ppb thresholds.

 

Frequently Asked Questions

 

Q: Are these connectors compatible with standard PTFE and PFA tubing?

A: Yes, they are dimensionally engineered to fit standard metric and imperial fluoropolymer tubing manufactured to commercial tolerances.

Q: Can these fittings be reused after disassembly?

A: Yes, the robust mechanical design allows multiple assembly and disassembly cycles without sealing degradation, provided components are inspected for wear.

Q: What documentation is supplied with bulk shipments?

A: Material Test Reports, Certificate of Analysis for resin purity, and lot traceability documentation are provided with every order.

Q: What is the standard lead time for custom configurations?

A: Standard catalog items ship within 3 to 5 business days, while customized tooling runs typically require 15 to 25 business days.

Hot Tags: straight tube union connector, China straight tube union connector manufacturers, suppliers, connect poly pipe to pvc, ferrule for pipe, hot water cpvc pipe fittings, plastic tubing connectors, water purifier pipe connector, weld on tubing end caps

Send Inquiry

(0/10)

clearall