Product Information

Operation:

• The PTR valve is designed to relieve excess pressure caused by water expanding during the heating cycle.
• It is NORMAL for the PTR valve to release drips of hot water during the heating cycle if no Expansion Control Valve is fitted.
• If the water heater thermostat fails to operate correctly, the PTR valve will discharge hot water when the temperature reaches 99ºC.
• Fitting an Expansion Control Valve to a hot water system will prolong the life of the PTR valve and the water heater.
• It is recommended to flush the PTR valve every six months to clear deposits from around the valve seat.
• The date of manufacture can be found on the Indicator Disc. See warranty statement for further information.
• Never expose valves to a torch-flame or heat. Heat will destroy the seals and sealing parts.

Installation:

• NEFA valves should always be installed by a licensed plumber in accordance with National Plumbing and Drainage Code AS/NZ3500.4.
• The installation must also comply with any Local Authority requirements and the water heater manufacturer’s requirements.
• Don’t install valve if temperature probe is damaged or bent.
• Ensure flushing handle is accessible.
• Check the inlet water pressure does not exceed the maximum stated in the table below.
• Ensure that sealing materials, e.g. thread tape or thread sealing paste, do not intrude into flow passages as this could cause obstruction to flow and failure of the valve.
• Install PLV and/or ECV, if required, as stated in the table below.
• Install drain line in accordance with AS/NZ3500.4

REFER TO TECHNICAL DRAWINGS AND IMAGES FOR TYPICAL INSTALLATION DIAGRAMS.

 

Specifications

Inlets:	15mm (1/2” BSPT) Tapered Male Thread
Outlet:	15mm (1/2” BSP) Female Thread
Length:	36mm
Height:	100mm

Factory Set:	850kPa
Auxiliary Relief Valve Pressure:	500 – 935Kpa
Rated Capacity:	10kW

Conforms to these standards: AS1357.1

Servicing

This valve is not serviceable, but please note it should be flushed half yearly

 

Technical Drawings & Images