TST - Industrial Pneumatic Quick Release Couplings (5.5mm Bore)
Parker / Rectus 19 / PCL Compatible
Industrial-grade pneumatic quick release couplings with 5.5mm bore size, fully interchangeable with Parker, Rectus 19, and PCL AC21 & SC21 series. Designed for single-handed operation and maximum reliability in demanding industrial environments.
Size & Specifications
Critical Size Information
- Bore Size: 5.5mm (Industrial Standard)
- Flow Rate: 660 L/min
- Max Pressure: 35 bar (508 PSI)
- Temperature Range: -20°C to +100°C
- Materials: Nickel-plated steel and brass
- Seal Material: Buna Nitrile (NBR)
Core Features
- Single shut-off when disconnected
- Single-handed push-to-connect design
- Fully compatible with Parker/Rectus 19/PCL series
- Industrial-grade construction
- Leak-free operation
⚠️ IMPORTANT: Check Size Before Ordering
These are 5.5mm bore professional couplings
NOT standard domestic air tool size (typically 6mm/8mm)
Please message us if you're unsure about compatibility - we're more than happy to help!
Compatibility & Applications
Who Should Buy These
- Existing Parker/Rectus/PCL system users
- Professional workshops and factories
- Industrial maintenance teams
- Anyone replacing like-for-like fittings
- Systems marked with DN5.5 or 5.5mm bore
NOT Suitable For
- Standard DIY air tools from retail stores
- Most hobby compressors
- Unmarked fittings without size information
- 6mm or 8mm bore systems
- First-time buyers unsure of their system
Technical Specifications
Critical Size Information
- Bore Size: 5.5mm (Industrial Standard)
- Compatible: Parker, Rectus 19, PCL AC21/SC21
- Flow Rate: 660 L/min
- Max Pressure: 35 bar (508 PSI)
- Temperature Range: -20°C to +100°C
- Materials: Nickel-plated steel and brass
Still Not Sure?
With 36 years in pneumatics, we can quickly tell you if these will fit your system. Message us with: Brand of your existing fittings, photos of current couplings, or system model numbers. It's much easier to get it right first time!
Response times: We aim to reply within 24 hours during business days. Please allow extra time during weekends and bank holidays.