Categories

Site Information

 Loading... Please wait...
  • 1300 428 999
  • Contact Us
  • Order Status
  • My Account

PRESSURE & TEMP RELIEF VALVE 20mm 700KPA

$89.75
  • PRESSURE & TEMP RELIEF VALVE 20mm 700KPA
  • PRESSURE & TEMP RELIEF VALVE 20mm 700KPA - Dimensions
  • PRESSURE & TEMP RELIEF VALVE 20mm 700KPA - Features
  • PRESSURE & TEMP RELIEF VALVE 20mm 700KPA - Selection
  • PRESSURE & TEMP RELIEF VALVE 20mm 700KPA - Rating
  • AVG Australian Valve Group

PRESSURE & TEMP RELIEF VALVE 20mm 700KPA

$89.75
SKU:
PTR20-700AV
Weight:
1.00 KGS
Shipping:
Calculated at checkout
FREE SHIPPING Mainland Australia!
Quantity:

Product Description

PRESSURE & TEMP RELIEF VALVE 20mm 700KPA  

PTR Valve Function

The Pressure and Temperature Relief valve (PTR) is designed to relieve the increase in pressure caused by water expansion during the normal heating cycle. The valve will then relieve the increase in pressure by releasing drips of hot water to the drain line. Should the electrical temperature cut-out device cease to operate correctly, the water will overheat.

The temperature probe will then open the PTR valve and discharge hot water to the drain line. It is recommended that an ECV be fitted to the cold water supply line. This will relieve cold water, not hot water, during the heating cycle, saving energy and increasing the life of the PTR. Some local governments make it mandatory to install an ECV in the cold water line. PTR and ECV valves are safety valves and should be replaced every 4 years.

Inlet Pressure Control

High pressure may cause excessive discharge and possible premature failure of the operating relief valve (see table). The maximum water pressure usually occurs during the night, at the time of lowest water usage.

In any mains pressure water heater installation if the water pressure exceeds 80% of the nominal set pressure of the operating relief valve, a Pressure Limiting Valve must be fitted to the cold inlet. If a cold water expansion control valve is fitted it will have a lower set pressure than the PTR valve and therefore will be the main operating relief valve.

The valve rating plates are colour coded to make selecting the correct valve easy. Simply match the PTR valve to an ECV with a rating plate of the same colour.

Product Reviews

This product hasn't received any reviews yet. Be the first to review this product!

Click the button below to add the PRESSURE & TEMP RELIEF VALVE 20mm 700KPA to your wish list.