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Description
Precision-Engineered Reducing Bush
R3/8 Male to Rp1/4 Female Thread Adapter
When your pneumatic system demands reliable thread conversion, this precision-machined reducing bush delivers professional-grade performance. Engineered for workshop environments where downtime isn't an option.
Technical Specification
- Male Thread: R3/8 BSP Parallel (ISO 228-1)
- Female Thread: Rp1/4 BSP Parallel (ISO 7-1)
- Material: CW617N Brass (BS EN 12165)
- Working Pressure: Up to 16 bar (232 psi)
- Temperature Range: -20°C to +120°C
- Surface Finish: Nickel-plated for corrosion resistance
Key Features
- Precision CNC-machined threads for leak-free sealing
- High-grade brass construction for durability
- Compliant with ISO 228-1 and ISO 7-1 standards
- Nickel-plated finish resists oxidation
- Hexagonal body for secure wrench grip
- UK-manufactured to exacting tolerances
Professional Applications
This reducing bush is the essential component for connecting different thread sizes in compressed air systems. Workshop technicians rely on it for:
- Air Tool Adaptation: Connect Rp1/4 inlet tools to R3/8 manifolds and hoses
- Compressor Outlets: Adapt larger compressor ports to smaller distribution systems
- Pressure Gauge Installation: Mount 1/4" gauges on 3/8" ports
- Regulator Mounting: Interface between different thread standards
- System Reconfiguration: Retrofit existing installations without replacing entire assemblies
Engineering Excellence
Manufactured from CW617N brass—the industry standard for pneumatic fittings—this reducing bush combines mechanical strength with excellent machinability. The nickel-plated surface treatment provides a protective barrier against moisture, oils, and atmospheric corrosion, ensuring long-term reliability in demanding workshop environments.
Each thread is precision-cut to ISO specifications, guaranteeing proper engagement and leak-free performance when installed with appropriate PTFE tape or thread sealant. The hexagonal body profile allows controlled torque application without risk of rounding or damage.
Installation Guidelines
- Thread Preparation: Clean both male and female threads. Remove any debris or old sealant.
- Sealant Application: Apply 2-3 wraps of PTFE tape to the male R3/8 thread in a clockwise direction.
- Hand Tightening: Thread the bush into the female port by hand until finger-tight.
- Final Torque: Use a wrench on the hexagonal body. Tighten 1.5 to 2 full turns past hand-tight.
- Pressure Test: Pressurize the system gradually and check for leaks with soapy water solution.
Note: Do not over-tighten. Excessive torque may crack the fitting or damage threads.
Thread Compatibility Reference
| Thread Type | Standard | Application |
|---|---|---|
| R3/8 Male | ISO 228-1 (BSP Parallel) | Connects to Rp3/8 female ports, hoses, couplings |
| Rp1/4 Female | ISO 7-1 (BSP Parallel) | Accepts R1/4 male fittings, gauges, regulators |
Why Workshop Professionals Choose This Fitting
Immediate Availability: Held in UK stock for same-day dispatch on orders placed before 2 PM.
Certified Quality: Manufactured to ISO standards with full material traceability.
Technical Support: Our team understands pneumatic systems and can advise on compatibility.
Trade Pricing: Volume discounts available for fleet maintenance and distributor accounts.
Payment & Security
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