Reliance RWC CPT15 Pressure and Temperature Relief Valve PTEM540015 1/2″ MBSP x 15mm Compression 4.5 Bar 95°C WRAS Approved
Reliance CPT15 Pressure & Temperature Relief Valve combines 4.5 Bar pressure relief and 90–95°C temperature discharge in a WRAS approved brass body—ideal for unvented cylinder safety.
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- Estimated Delivery: For most items (over 99% of our products), orders placed before 3pm on working days will be dispatched the same day with our Fast DELIVERY 1st class service. For the rare items not immediately in stock, dispatch may take 1-3 working days after receiving your order. If your order cannot be dispatched the same day, we will notify you via email.
- For boilers: We aim to dispatch on the next working day. However, in some cases, it may take 2-3 working days to dispatch. Rest assured, we will always strive for the fastest possible turnaround.
The Reliance RWC CPT15 PTEM540015 Pressure & Temperature Relief Valve is designed to offer critical protection for unvented hot water cylinders in residential, commercial, and industrial systems. It activates automatically to release water when pressure exceeds 4.5 Bar or temperature rises above 90–95°C, ensuring your system remains safe and operational.
Built with a durable brass body, this valve is WRAS approved for use in potable water systems, and its 95mm temperature probe ensures fast and accurate thermal detection. With a 1/2″ MBSP threaded inlet and 15mm compression outlet, the CPT15 is quick to install and compatible with standard pipework.
Whether you’re upgrading, replacing, or installing new safety components, the CPT15 is a reliable and cost-effective solution for protecting your hot water system.
Key Features
• Dual Safety Protection – Discharges water at 4.5 Bar pressure or 90–95°C temperature
• Reliable Thermal Sensing – 95mm probe for accurate temperature detection
• Universal Connection – 1/2″ MBSP inlet and 15mm compression outlet for easy installation
• WRAS Approved Construction – Certified for use in potable water systems
• Durable Brass Body – Built to withstand high pressure and temperature environments
Applications
• Unvented Hot Water Cylinder Systems – Prevents damage from overheating or over-pressurization
• Domestic and Commercial Water Heating – Maintains safety and compliance
• Cylinder Safety Upgrades – Ideal for new installs or emergency replacements
Technical Specifications:
| Feature | Details |
|---|---|
| Brand | Reliance Water Controls (RWC) |
| Manufacturer Code | PTEM540015 |
| Pressure Relief Setting | 4.5 Bar |
| Temperature Relief Setting | 90–95°C |
| Probe Length | 95mm |
| Inlet Connection | 1/2″ MBSP Threaded |
| Outlet Connection | 15mm Compression |
| Material | Brass |
| WRAS Approved | Yes |
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