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Description
ISO B12 Coupling – Female Thread Rp 1/2
Premium brass quick-release coupling engineered for professional pneumatic systems
Product Overview
The ISO B12 coupling with Rp 1/2 female thread represents the gold standard in pneumatic quick-connect technology. Precision-machined from premium brass alloy, this coupling delivers instant, secure connections for compressed air systems operating up to 15 bar (217 PSI). The Rp 1/2 parallel thread ensures leak-free performance across workshop compressors, air tools, and industrial pneumatic equipment.
Designed for trade professionals who demand reliability, this coupling features a spring-loaded sleeve mechanism that locks automatically upon connection and releases with a simple pull-back action. The high-flow bore minimizes pressure drop, ensuring your air tools receive maximum power for optimal performance.
Technical Specifications
| Standard | ISO 6150 B-12 (Interchange with Orion, PCL, Rectus) |
| Thread Type | Rp 1/2 BSP Parallel Female (ISO 7) |
| Material | Premium Brass Alloy (CW617N) |
| Maximum Pressure | 15 bar (217 PSI / 1.5 MPa) |
| Flow Coefficient (Cv) | High-flow design – minimal pressure drop |
| Operating Temperature | -20°C to +80°C |
| Seal Material | NBR (Nitrile Rubber) – oil and air compatible |
| Finish | Natural brass with corrosion-resistant coating |
Key Features & Benefits
- ✓Instant Connection: Spring-loaded sleeve locks automatically – no tools required for assembly or disassembly
- ✓Universal Compatibility: ISO 6150 B-12 standard ensures interchange with Orion, PCL, Rectus, and other major brands
- ✓Premium Brass Construction: CW617N alloy delivers superior durability, corrosion resistance, and longevity
- ✓High-Flow Design: Optimized bore geometry maintains air velocity and minimizes pressure loss
- ✓Leak-Free Performance: Precision-machined threads and NBR seals guarantee zero air loss
- ✓Workshop Proven: Rated for continuous duty in demanding trade and industrial environments
Common Applications
Installation & Usage
Thread Preparation: Ensure the Rp 1/2 male thread is clean and free from debris. Apply PTFE tape or liquid sealant to the male thread (not the coupling's female thread) for optimal seal integrity.
Installation: Hand-tighten the coupling onto the male thread. Use a wrench on the hex body to achieve final torque – typically 25-30 Nm for Rp 1/2 connections. Avoid over-tightening which may damage the brass threads.
Connection: Push the mating adaptor firmly into the coupling until you hear an audible click. Pull gently to confirm the lock has engaged.
Disconnection: Ensure air pressure is released from the system. Pull back the coupling sleeve and withdraw the adaptor in one smooth motion.
⚠️ Safety & Maintenance
- Always depressurize the system before connecting or disconnecting couplings
- Inspect seals regularly for wear, cracks, or degradation – replace if damaged
- Do not exceed maximum working pressure of 15 bar (217 PSI)
- Clean coupling components periodically to prevent debris buildup
- Store in a dry environment when not in use to prevent corrosion
Why Choose Air Compressors UK?
Product Notes
Compatibility: This coupling body requires a matching ISO B12 adaptor (sold separately) to complete the connection. Available in male thread, hose tail, and push-fit configurations.
Thread Standard: Rp threads are parallel BSP threads per ISO 7. Ensure your mating component uses Rp (parallel) or R (tapered) male threads – do not confuse with NPT or metric threads.
Barcode: 5014875331331 | SKU: air_comp535
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