Pneumatic Fitting Types Explained – Full Guide to Air Tube Connectors

Main Types of Pneumatic Fittings

Straight Pneumatic Fittings

Straight fittings are used to connect two tubes or a tube to a threaded port in a straight line.

Common types:

• PU → tube to tube
• PC → tube to thread

Best for:

• Simple connections
• Pipeline extension
• Low complexity systems

Elbow Pneumatic Fittings

Elbow fittings allow tubing to change direction (usually 90°).

Common types:

• PL → threaded elbow
• PV → tube-to-tube elbow

Best for:

• Space-saving installations
• Direction change in piping

Tee Pneumatic Fittings

Tee fittings are used to split airflow into two branches.

Common types:

• PE → T-type (90° branch)
• PY → Y-type (angled branch, smoother flow)

Best for:

• Airflow branching
• Distribution systems

Cross Pneumatic Fittings

Cross fittings allow four-way air distribution in complex systems.

Common type:

• PZA → 4-way connector

Best for:

• Multi-line air distribution
• Complex pneumatic circuits

Bulkhead Pneumatic Fittings

Bulkhead fittings are used to route tubing through panels or enclosures.

Common types:

• PM → bulkhead straight
• PLM → bulkhead elbow
• PMF → bulkhead female

Best for:

• Panel-mounted systems
• Clean and organized layout

Pneumatic Valves

Pneumatic valves are used to control airflow, pressure, and direction.

Common types:

• PA → inline valve
• HVSS → shut-off valve
• HVFF → shut-off with exhaust

Best for:

• Airflow control
• System safety
• Maintenance isolation

Applications

• Industrial automation systems
• Air compressor pipelines
• Robotics and assembly lines
• Packaging machinery
• Manufacturing equipment

Pneumatic fittings are used in systems requiring air distribution, flexible piping layout, and reliable sealing performance.

How to Choose the Right Pneumatic Fitting

1. Connection Type

• Tube ↔ Tube → PU / PV / PE / PY
• Tube ↔ Thread → PC / PL

2. Direction Requirement

• Straight → PU
• 90° → PL / PV
• Multi-branch → PE / PY / PZA

3. Installation Environment

• Panel mount → PM / PLM / PMF
• Inline control → PA

4. System Complexity

• Simple → straight / elbow
• Complex → tee / cross

Why Choose Our Pneumatic Fittings

• Full range of pneumatic fitting types available
• OEM / ODM customization for industrial air connector solutions
• Reliable push-to-connect fittings for automation systems
• High-quality pneumatic fitting manufacturer with strict QC system
• Durable air tube connectors for long-term industrial use
• Fast delivery and global B2B supply support

FAQ

Q1: What are pneumatic fittings used for?
They are used to connect, route, and control airflow in compressed air systems.

Q2: What is the most common pneumatic fitting?
Push-to-connect fittings are the most widely used due to easy installation.

Q3: What is the difference between elbow and tee fittings?
Elbow fittings change direction, while tee fittings split airflow.

Q4: What is a bulkhead fitting used for?
It allows tubing to pass through panels or enclosures.

Q5: How do I choose the right pneumatic fitting?
Consider connection type, direction, pressure, and system layout.

👉 Explore our Pneumatic Fittings series for more options.