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Description
Standard Female Thread Adaptor RP 1/4 BSP
Precision-engineered female thread adaptor delivering professional-grade pneumatic connections for workshop, industrial, and trade applications. UK-manufactured to exacting standards with over 75 years of British engineering heritage.
Precision British Manufacturing
Crafted in the UK with seven decades of pneumatic expertise, ensuring dimensional accuracy and consistent performance across demanding industrial environments.
Industrial-Grade Construction
Case-hardened steel body with advanced corrosion-resistant coating provides exceptional durability and extended service life in harsh workshop conditions.
Universal System Integration
Engineered for seamless compatibility across multiple coupling platforms, enabling flexible pneumatic system design and reliable tool connections.
Professional Display Packaging
Retail-ready presentation packaging ideal for trade counters, workshop displays, and wholesale distribution channels.
Complete Technical Specifications
| Thread Configuration | Female RP 1/4 BSP (Parallel British Standard Pipe) |
| Nominal Bore Diameter | 5mm |
| Air Flow Capacity | 43 CFM at 100 PSI |
| Maximum Working Pressure | 14 bar (200 PSI / 1.4 MPa) |
| Operating Temperature Range | -40°C to +100°C (-40°F to +212°F) |
| Body Material | Case-Hardened Steel |
| Surface Treatment | Corrosion-Resistant Protective Coating |
| Unit Weight | 44g (0.044 kg / 1.55 oz) |
| Manufacturing Standard | BS EN ISO 9001 Certified Production |
| Country of Origin | United Kingdom |
| Packaging Format | Display-Packed Retail Presentation |
| Barcode (EAN) | AC015014875360119 |
Engineering & Performance Features
Precision Thread Engineering
RP 1/4 BSP parallel thread profile manufactured to tight tolerances ensures leak-free connections and optimal sealing performance when paired with appropriate thread sealant or PTFE tape.
High-Flow Design
Optimized internal bore geometry delivers 43 CFM air flow capacity at 100 PSI, minimizing pressure drop and maintaining tool performance across extended pneumatic runs.
Pressure-Rated Construction
Tested and certified for continuous operation at 14 bar maximum working pressure, providing reliable performance headroom for standard workshop compressed air systems.
Temperature Resilience
Wide operating temperature range from -40°C to +100°C accommodates outdoor construction sites, unheated workshops, and high-temperature industrial processes.
Corrosion Protection
Advanced surface coating resists moisture, oil mist, and chemical exposure commonly encountered in automotive, manufacturing, and maintenance environments.
Case-Hardened Durability
Heat-treated steel construction provides superior thread strength and wear resistance, preventing thread damage during repeated connection cycles.
Professional Applications
- Workshop Compressed Air Systems: Primary connection point for pneumatic tools including impact wrenches, air ratchets, die grinders, and spray equipment in automotive and general engineering workshops.
- Fleet Maintenance Operations: Reliable air supply connections for vehicle service bays, tyre inflation systems, brake bleeding equipment, and chassis lubrication tools.
- Manufacturing & Production Lines: Integration into automated pneumatic systems, assembly line tooling, material handling equipment, and process control instrumentation.
- Construction & Site Work: Portable compressor connections for framing nailers, finish nailers, concrete breakers, sandblasting equipment, and pneumatic demolition tools.
- Agricultural & Farm Machinery: Air supply connections for tractor-mounted equipment, grain handling systems, and workshop maintenance tools.
- Marine & Offshore Applications: Corrosion-resistant connections for shipboard pneumatic systems, deck equipment, and marine workshop installations.
- Trade & Wholesale Distribution: Display-ready packaging format suitable for retail resale, trade counter stock, and distributor inventory.
System Compatibility
This standard female thread adaptor is engineered for universal compatibility across the following professional coupling systems:
The RP 1/4 BSP female thread accepts any male-threaded pneumatic component conforming to British Standard Pipe parallel thread specifications, ensuring broad interoperability across manufacturers and system types.
Installation & Connection Procedures
- Thread Inspection: Examine female thread for debris, old sealant residue, or thread damage. Clean thoroughly with appropriate solvent and wire brush if necessary.
- Thread Sealing Application: Apply 3-4 wraps of PTFE thread seal tape to the male connection thread in a clockwise direction, or use appropriate liquid thread sealant rated for compressed air service.
- Initial Hand Threading: Thread the adaptor onto the male connection by hand, ensuring smooth engagement without cross-threading. Continue hand-tightening until resistance is felt.
- Final Torque Application: Using an appropriate spanner or wrench, apply 1 to 2 additional turns beyond hand-tight position. Avoid over-tightening which may damage threads or crack the adaptor body.
- System Pressurization: Gradually pressurize the pneumatic system to working pressure while monitoring the connection point.
- Leak Detection: Apply soapy water solution or commercial leak detection fluid to the threaded connection. Observe for bubble formation indicating air leakage.
- Final Inspection: If leakage is detected, depressurize system, remove adaptor, reapply thread sealant, and repeat installation procedure.
Ongoing Maintenance
Conduct periodic visual inspections of threaded connections during routine system maintenance. Check for signs of thread wear, corrosion, or mechanical damage. Replace adaptors showing thread stripping, cross-threading, or significant corrosion. Retighten connections if minor seepage is detected, or remove and reseal if persistent leakage occurs.
Quality Assurance & Manufacturing Standards
Every adaptor undergoes comprehensive quality control inspection throughout the manufacturing process, ensuring dimensional accuracy, thread conformity, and surface finish quality. Production facilities operate under BS EN ISO 9001 quality management certification, guaranteeing consistent manufacturing standards and traceability.
The case-hardening heat treatment process creates a hardened surface layer while maintaining a tough, ductile core, delivering optimal thread strength and impact resistance. The corrosion-resistant coating is applied using controlled processes to ensure uniform coverage and long-term protection in moisture-rich environments.
Batch testing protocols verify pressure ratings, flow characteristics, and thread gauge conformity, ensuring every component meets published specifications before dispatch.
Why Specify This Adaptor
UK Manufacturing Heritage: Over 75 years of British pneumatic engineering expertise ensures proven design reliability and consistent quality standards.
Professional-Grade Materials: Case-hardened steel construction delivers the durability and longevity demanded by high-cycle industrial applications.
Universal Compatibility: Standard RP 1/4 BSP thread configuration ensures compatibility with the broadest range of pneumatic equipment and coupling systems.
Immediate Availability: UK warehouse stock enables same-day dispatch for orders placed before 2pm, minimizing downtime and project delays.
Technical Support: Access to pneumatic specialists for application guidance, system design assistance, and troubleshooting support.
Trade Pricing: Volume discounts and trade account terms available for professional users, contractors, and wholesale distributors.
Customer Feedback
Rated 4.9 out of 5 stars from 11 verified customer reviews
Customers consistently highlight the precision thread fit, leak-free performance, and robust construction quality. Professional users appreciate the reliable connections and long service life in demanding workshop environments.
In Stock — Same-day dispatch available on orders placed before 2pm (Monday-Friday)
Fast UK delivery • Trade accounts welcome • Technical support available
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