Description
The KeyPlumb 15mm Full Bore Isolation Valve is a professional-grade WRAS-approved valve designed for water systems, ensuring efficient flow control and reliable isolation. Featuring robust nickel-plated brass construction with a durable chrome finish, this screwdriver-operated valve provides both strength and resistance to corrosion. Equipped with EN1254-2 compression fittings on both ends, it ensures secure, leak-proof installation for professional and domestic plumbing systems.
Key Features & Benefits
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Full Bore Design – Minimizes flow restriction for maximum system performance
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WRAS Approved – Meets UK water regulations for potable water safety
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Nickel-Plated Brass – Durable construction with corrosion resistance
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Chrome Finish – Professional appearance with long-lasting protection
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EN1254-2 Compression Fittings – Secure, leak-proof connections both ends
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Screwdriver Operation – Precise, tamper-resistant control
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High Pressure Rating – 10 bar maximum operating pressure
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Wide Temperature Range – Operates up to 95°C
What's Included
- 15mm full bore isolation valve (chrome plated)
- EN1254-2 compression fittings (both ends)
- Installation instructions
Technical Specifications
- Manufacturer: KeyPlumb
- Size: 15mm
- Connection Type: Compression fittings (both ends)
- Body Material: Brass
- Finish: Nickel plated with chrome coating
- Bore Type: Full bore (unrestricted flow)
- Operation: Screwdriver slot
- Maximum Operating Pressure: 10 bar (145 psi)
- Maximum Working Temperature: 95°C
- Standards Compliance: EN 1254-2
- Certification: WRAS approved
- Application: Hot and cold water systems
- SKU: K06922
Alternative Part Numbers: K06922 | KPFBISO15 | 1003CP
Full Bore vs Standard Bore
Full bore isolation valves maintain the same internal diameter as the connected pipework (15mm), ensuring unrestricted water flow when fully open. This eliminates pressure drop and flow restriction, making full bore valves essential for:
- High-flow applications (showers, baths, washing machines)
- Maintaining system pressure throughout the property
- Preventing flow rate reduction in critical circuits
- Professional installations where maximum performance is required
Standard bore valves have a reduced internal diameter which can restrict flow. For isolation purposes where flow rate matters, always choose full bore.
WRAS Approval Explained
WRAS (Water Regulations Advisory Scheme) approval confirms this valve meets stringent UK water supply regulations. WRAS-approved products have been independently tested and certified as:
- Safe for use in potable (drinking) water systems
- Won't contaminate water supply
- Compliant with Water Supply (Water Fittings) Regulations
- Suitable for professional and DIY installations
- Meeting all relevant British and European standards
Screwdriver Operation Benefits
Screwdriver-operated valves offer several advantages over hand-wheel types:
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Tamper-Resistant: Prevents unauthorized adjustment by occupants
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Compact Design: No protruding handle in tight spaces
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Professional Appearance: Clean, streamlined look
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Precise Control: Accurate quarter-turn operation
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Ideal for Service Valves: Perfect for isolation points that aren't frequently operated
Applications & Use Cases
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Appliance Isolation: Washing machines, dishwashers, water softeners
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Bathroom Installations: Basin, toilet, shower, and bath supply isolation
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Kitchen Plumbing: Sink and appliance feeds
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Heating Systems: Radiator isolation, boiler connections
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Service Valves: Maintenance access points throughout plumbing systems
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Commercial Installations: Hotels, offices, schools, care facilities
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New Builds: Specification-grade isolation valves
Installation Instructions
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Prepare Pipe: Cut pipe square and remove burrs with a deburring tool
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Measure & Mark: Mark insertion depth on pipe (typically 12-15mm)
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Assemble Fitting: Slide nut and olive onto pipe in correct order
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Insert Pipe: Push pipe fully into valve body to marked depth
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Hand Tighten: Screw compression nut hand-tight
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Final Tighten: Use spanners to tighten 1-1.5 turns beyond hand-tight
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Repeat Other End: Connect second pipe using same method
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Test: Turn on water supply and check for leaks
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Adjust if Needed: Tighten slightly if minor weeping occurs
Installation Tips
- Always use two spanners when tightening – one to hold the valve body, one to turn the nut
- Don't over-tighten compression fittings as this can damage the olive and cause leaks
- Ensure pipe is cut square for proper olive compression
- Install with screwdriver slot accessible for future operation
- Consider valve orientation for ease of access
- Use PTFE tape or jointing compound on threaded connections only (not compression fittings)
Pressure & Temperature Ratings
10 Bar Maximum Pressure: This valve is rated for 10 bar (145 psi) operating pressure, which exceeds typical UK mains water pressure (3-5 bar). This high rating provides a substantial safety margin and ensures reliable performance even in high-pressure systems.
95°C Maximum Temperature: The valve can handle water temperatures up to 95°C, making it suitable for both cold water and hot water applications, including heating systems and hot water supply circuits.
EN 1254-2 Compliance
EN 1254-2 is the European standard for copper fittings with compression ends for use in plumbing installations. Compliance ensures:
- Correct dimensions for reliable sealing
- Appropriate materials for water contact
- Adequate pressure and temperature performance
- Compatibility with standard UK copper pipework
Nickel-Plated Brass Construction
The valve body is manufactured from brass with nickel plating and chrome finish:
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Brass Body: Provides strength, durability, and corrosion resistance
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Nickel Plating: Additional corrosion protection layer
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Chrome Finish: Professional appearance with superior corrosion resistance
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Long Lifespan: Outlasts plastic or zinc alloy alternatives
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Maintains Integrity: Won't degrade from water chemicals or temperature changes
Maintenance & Care
Full bore isolation valves require minimal maintenance:
- Operate the valve periodically (every 6-12 months) to prevent seizing
- Check compression fittings annually for signs of weeping
- Tighten if necessary (typically just a quarter-turn)
- The chrome finish requires no special care
- If valve becomes stiff, a small amount of silicone-based lubricant can be applied
Why Choose KeyPlumb?
KeyPlumb specializes in professional plumbing components, providing quality products trusted by trade professionals across the UK. Their isolation valves are engineered to professional standards with WRAS approval and comprehensive compliance with UK and European regulations.
Compatibility
This valve is compatible with:
- 15mm copper pipe (standard UK size)
- 15mm plastic pipe with appropriate inserts
- Standard compression fittings and connections
- Hot and cold water systems
- Heating systems (within temperature limits)
What You'll Need for Installation
- 15mm full bore isolation valve (this product)
- Two adjustable spanners or 22mm spanners
- Pipe cutter or hacksaw
- Deburring tool or file
- Tape measure or ruler
- Cloth for cleaning pipe ends
- Flathead screwdriver (for valve operation)
Perfect for: Professional plumbers, heating engineers, maintenance teams, property developers, landlords, and competent DIY enthusiasts seeking reliable, WRAS-approved, full-bore isolation valves with professional-grade brass construction and maximum flow performance.
