Reliance Pressure and Temperature Relief Valve - 10 Bar - 90-95 Degree C

PTEM550853 Water Heater Valve. This Reliance RWC Unvented Components Europe valve is designed for ...

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B&Q - 2 X Reliance10 Bar Tpr15 Pressure And Temperature Relief Valve 90-95 Degreec + Tpr Key
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Product Information

Full details

This Reliance RWC Unvented Components Europe valve is designed for water heater systems requiring precise safety controls. It offers a key benefit of dual protection against over-pressure and over-temperature conditions, ensuring system integrity and user safety. A potential caveat is the need for professional installation due to its critical safety function. Key features include a 10 bar pressure relief setting, a 90-95°C temperature relief setting, a 1/2″ connection, and an included TPR / PRV Service Key for system maintenance.

All features

Model Part NumberPTEM550853
BrandUnvented Components Europe

Extended Product Information

FAQs

What is the primary purpose of this valve?

The primary purpose is to act as a safety device for water heaters, releasing water if the system pressure or temperature exceeds safe limits.

What does '10 Bar' and '90-95 Degree C' refer to?

These are the set points at which the valve will activate. 10 Bar is the maximum safe operating pressure, and 90-95°C is the maximum safe operating temperature before the valve opens.

Can I install this valve myself?

Installation should ideally be carried out by a qualified professional plumber to ensure correct fitting and adherence to safety regulations.

What is the TPR / PRV Service Key used for?

The service key is used to manually test the valve's function by lifting the lever, allowing water to flow, and also assists in recharging the air gap or draining the system.

How often should I test the valve?

It is generally recommended to test the valve at least annually, or as specified by your water heater manufacturer or local building codes.

What happens if the valve discharges water?

If the valve discharges water, it means either the system pressure or temperature has exceeded the set limits. This water should be directed to a safe drainage point.

Is this valve suitable for all types of water heaters?

This valve is specifically designed for unvented water heating systems. Compatibility with your specific water heater model should be confirmed with the manufacturer's documentation.

Troubleshooting

Valve is constantly dripping or discharging water.

This could indicate system pressure is too high (exceeding 10 bar) or the valve seat may be fouled. Check system pressure and clean or replace the valve if necessary.

Valve does not discharge water when pressure or temperature is high.

The valve may be blocked, seized, or faulty. It requires immediate attention. Use the service key to test; if no discharge occurs, the valve needs replacement by a professional.

Discharge pipe is leaking at the connection.

Ensure the connection is properly tightened. If the leak persists, the thread may be damaged, or sealant may be required. A professional should inspect and repair.

Pros and Cons

Pros

  • Provides critical safety for water heating systems.
  • Dual protection against both over-pressure and over-temperature.
  • Includes a service key for easier maintenance.
  • Standardized connection size simplifies installation.
  • Reliable operation from a reputable brand.

Cons

  • Requires professional installation for safety and optimal function.
  • Specific temperature relief range may not suit all systems.
  • Potential for water discharge during relief events requires proper drainage.
  • Maintenance is necessary to ensure continued operation.

Setup, Compatibility & Care

Setup: Installation of this valve should be performed by a qualified professional plumber. It must be fitted vertically into the hot water outlet of the water heater, ensuring the discharge pipe is correctly routed to a safe drainage point, compliant with local regulations. The 1/2″ connection ensures compatibility with standard plumbing fittings.

Compatibility: This valve is designed for use with unvented water heating systems. Ensure your system's operating pressure and temperature requirements align with the valve's specifications (10 bar / 90-95°C). Always consult your water heater's manual for specific valve compatibility.

Care: Regular inspection and testing are recommended. Use the provided TPR / PRV Service Key periodically (as per manufacturer guidelines or local regulations) to manually lift the lever and ensure water flows freely through the discharge pipe. This helps prevent seizing due to scale or sediment. Check the discharge pipe for any obstructions.

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