{"title":"Pressure \u0026 Temperature Relief Valves","description":null,"products":[{"product_id":"avg-ptr15-1000-15mm-1-2-1000kpa-ptr-tpr-pressure-temperature-relief-valve","title":"AVG Pressure Temperature Relief Valve 15mm - 1000kPa, Lead Free, DR Brass, WaterMark AS1357.1 | PTR15-1000-LF","description":"\u003cp\u003eThe AVG PTR15-1000-LF is a 15mm lead free pressure and temperature relief (PTR\/TPR) valve, set to relieve at 1000kPa — a critical safety device that vents a hot water system if pressure or temperature climbs beyond a safe limit, preventing tank rupture or scalding discharge.\u003c\/p\u003e\u003cp\u003ePTR valves are safety devices and should be replaced every 4 years, in line with manufacturer and AS\/NZS 3500 guidance. An expansion control valve (ECV) fitted to the cold inlet reduces wear on the PTR valve by absorbing routine thermal expansion instead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e15mm (1\/2\") connection\u003c\/li\u003e\n\u003cli\u003eRelief setting: 1000kPa\u003c\/li\u003e\n\u003cli\u003eExpansion capacity: 10kW (PTR15 series)\u003c\/li\u003e\n\u003cli\u003eForged DR brass body, lead free, stainless steel lever action\u003c\/li\u003e\n\u003cli\u003eHigh-temperature silicone boot and seal\u003c\/li\u003e\n\u003cli\u003eWaterMark certified — AS1357.1 Lic 2639; complies with AS4020\u003c\/li\u003e\n\u003cli\u003eManufactured under ISO 9001 \/ ISO 9002 quality assurance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSKU: PTR15-1000-LF | Brand: AVG — Australian Valve Group, a Watts Water Technologies brand.\u003c\/p\u003e","brand":"AVG","offers":[{"title":"Default Title","offer_id":45299821609109,"sku":"PTR15-1000-LF","price":52.94,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/2373\/5701\/files\/AVG_PTR15_1000_15mm_1_2_1000kPa_PTR_TPR_Pressure_Temperature_Relief_Valve.png?v=1764668903"},{"product_id":"ptr15-1400","title":"AVG Pressure Temperature Relief Valve 15mm - 1400kPa, Lead Free, DR Brass, WaterMark AS1357.1 | PTR15-1400-LF","description":"\u003cp\u003eThe AVG PTR15-1400-LF is a 15mm lead free pressure and temperature relief (PTR\/TPR) valve, colour-coded red for its 1400kPa relief setting — a critical safety device that vents a hot water system if pressure or temperature climbs beyond a safe limit, preventing tank rupture or scalding discharge.\u003c\/p\u003e\u003cp\u003ePTR valves are safety devices and should be replaced every 4 years, in line with manufacturer and AS\/NZS 3500 guidance. An expansion control valve (ECV) fitted to the cold inlet reduces wear on the PTR valve by absorbing routine thermal expansion instead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e15mm (1\/2\") connection\u003c\/li\u003e\n\u003cli\u003eRelief setting: 1400kPa (red)\u003c\/li\u003e\n\u003cli\u003eExpansion capacity: 10kW (PTR15 series)\u003c\/li\u003e\n\u003cli\u003eForged DR brass body, lead free, stainless steel lever action\u003c\/li\u003e\n\u003cli\u003eHigh-temperature silicone boot and seal\u003c\/li\u003e\n\u003cli\u003eWaterMark certified — AS1357.1 Lic 2639; complies with AS4020\u003c\/li\u003e\n\u003cli\u003eManufactured under ISO 9001 \/ ISO 9002 quality assurance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSKU: PTR15-1400-LF | Brand: AVG — Australian Valve Group, a Watts Water Technologies brand.\u003c\/p\u003e","brand":"AVG","offers":[{"title":"Single","offer_id":45769074311317,"sku":"PTR15-1400-LF","price":52.94,"currency_code":"AUD","in_stock":true},{"title":"10 Pack ($35.76 ex ea)","offer_id":45769074344085,"sku":"PTR15-1401","price":393.38,"currency_code":"AUD","in_stock":false},{"title":"50 Pack ($33.11 ex ea)","offer_id":45769074376853,"sku":"PTR15-1402","price":1821.19,"currency_code":"AUD","in_stock":true},{"title":"100 Pack  ($31.79 ex ea)","offer_id":45769074409621,"sku":"PTR15-1403","price":3496.68,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/2373\/5701\/files\/AVG_PTR15-1400_Pressure_Temperature_Relief_Valve_1400_KPA_15mm_1_2_BSP.png?v=1764669006"},{"product_id":"avg-pressure-temperature-relief-valve-15mm-850kpa-lead-free-dr-brass-watermark-as1357-1-ptr15-850-lf","title":"AVG Pressure Temperature Relief Valve 15mm - 850kPa, Lead Free, DR Brass, WaterMark AS1357.1 | PTR15-850-LF","description":"\u003cp\u003eThe AVG PTR15-850-LF is a 15mm lead free pressure and temperature relief (PTR\/TPR) valve, set to relieve at 850kPa — a critical safety device that vents a hot water system if pressure or temperature climbs beyond a safe limit, preventing tank rupture or scalding discharge.\u003c\/p\u003e\u003cp\u003ePTR valves are safety devices and should be replaced every 4 years, in line with manufacturer and AS\/NZS 3500 guidance. An expansion control valve (ECV) fitted to the cold inlet reduces wear on the PTR valve by absorbing routine thermal expansion instead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e15mm (1\/2\") connection\u003c\/li\u003e\n\u003cli\u003eRelief setting: 850kPa\u003c\/li\u003e\n\u003cli\u003eExpansion capacity: 10kW (PTR15 series)\u003c\/li\u003e\n\u003cli\u003eForged DR brass body, lead free, stainless steel lever action\u003c\/li\u003e\n\u003cli\u003eHigh-temperature silicone boot and seal\u003c\/li\u003e\n\u003cli\u003eWaterMark certified — AS1357.1 Lic 2639; complies with AS4020\u003c\/li\u003e\n\u003cli\u003eManufactured under ISO 9001 \/ ISO 9002 quality assurance\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AVG","offers":[{"title":"Default Title","offer_id":47927396991125,"sku":"PTR15-850-LF","price":68.85,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/2373\/5701\/files\/avg_ptr15-850_pressure_temperature_relief_valve_850_kpa_15mm.jpg?v=1788320327"},{"product_id":"avg-pressure-temperature-relief-valve-15mm-700kpa-lead-free-dr-brass-watermark-as1357-1-ptr15-700-lf","title":"AVG Pressure Temperature Relief Valve 15mm - 700kPa, Lead Free, DR Brass, WaterMark AS1357.1 | PTR15-700-LF","description":"\u003cp\u003eThe AVG PTR15-700-LF is a 15mm lead free pressure and temperature relief (PTR\/TPR) valve, set to relieve at 700kPa — a critical safety device that vents a hot water system if pressure or temperature climbs beyond a safe limit, preventing tank rupture or scalding discharge.\u003c\/p\u003e\u003cp\u003ePTR valves are safety devices and should be replaced every 4 years, in line with manufacturer and AS\/NZS 3500 guidance. An expansion control valve (ECV) fitted to the cold inlet reduces wear on the PTR valve by absorbing routine thermal expansion instead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e15mm (1\/2\") connection\u003c\/li\u003e\n\u003cli\u003eRelief setting: 700kPa\u003c\/li\u003e\n\u003cli\u003eExpansion capacity: 10kW (PTR15 series)\u003c\/li\u003e\n\u003cli\u003eForged DR brass body, lead free, stainless steel lever action\u003c\/li\u003e\n\u003cli\u003eHigh-temperature silicone boot and seal\u003c\/li\u003e\n\u003cli\u003eWaterMark certified — AS1357.1 Lic 2639; complies with AS4020\u003c\/li\u003e\n\u003cli\u003eManufactured under ISO 9001 \/ ISO 9002 quality assurance\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AVG","offers":[{"title":"Default Title","offer_id":47927397941397,"sku":"PTR15-700-LF","price":58.24,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/2373\/5701\/files\/AVG_PTR15_1000_15mm_1_2_1000kPa_PTR_TPR_Pressure_Temperature_Relief_Valve.png?v=1764668903"},{"product_id":"avg-pressure-temperature-relief-valve-15mm-1400kpa-with-1-extension-lead-free-dr-brass-watermark-as1357-1-ptre15-1400-lf","title":"AVG Pressure Temperature Relief Valve 15mm - 1400kPa with 1\" Extension, Lead Free, DR Brass, WaterMark AS1357.1 | PTRE15-1400-LF","description":"\u003cp\u003eThe AVG PTRE15-1400-LF is a 15mm lead free pressure and temperature relief valve with a 1\" extended body, set to relieve at 1400kPa. The extension lets the valve reach through thicker tank insulation or lagging while still venting safely if pressure or temperature exceeds a safe limit.\u003c\/p\u003e\u003cp\u003ePTR valves are safety devices and should be replaced every 4 years, in line with manufacturer and AS\/NZS 3500 guidance. An expansion control valve (ECV) fitted to the cold inlet reduces wear on the PTR valve by absorbing routine thermal expansion instead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e15mm (1\/2\") connection\u003c\/li\u003e\n\u003cli\u003eRelief setting: 1400kPa\u003c\/li\u003e\n\u003cli\u003eExpansion capacity: 10kW (PTR15 series)\u003c\/li\u003e\n\u003cli\u003eForged DR brass body, lead free, stainless steel lever action\u003c\/li\u003e\n\u003cli\u003eHigh-temperature silicone boot and seal\u003c\/li\u003e\n\u003cli\u003e1\" extended body for thicker tank lagging\/insulation\u003c\/li\u003e\n\u003cli\u003eWaterMark certified — AS1357.1 Lic 2639; complies with AS4020\u003c\/li\u003e\n\u003cli\u003eManufactured under ISO 9001 \/ ISO 9002 quality assurance\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AVG","offers":[{"title":"Default Title","offer_id":47927399022741,"sku":"PTRE15-1400-LF","price":91.53,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/2373\/5701\/files\/avg_1400_kpa_extended_pressure_temperature_relief_valve_ptre15-1400_1.jpg?v=1788320289"},{"product_id":"avg-pressure-temperature-relief-valve-15mm-1000kpa-with-1-extension-lead-free-dr-brass-watermark-as1357-1-ptre15-1000-lf","title":"AVG Pressure Temperature Relief Valve 15mm - 1000kPa with 1\" Extension, Lead Free, DR Brass, WaterMark AS1357.1 | PTRE15-1000-LF","description":"\u003cp\u003eThe AVG PTRE15-1000-LF is a 15mm lead free pressure and temperature relief valve with a 1\" extended body, set to relieve at 1000kPa. The extension lets the valve reach through thicker tank insulation or lagging while still venting safely if pressure or temperature exceeds a safe limit.\u003c\/p\u003e\u003cp\u003ePTR valves are safety devices and should be replaced every 4 years, in line with manufacturer and AS\/NZS 3500 guidance. An expansion control valve (ECV) fitted to the cold inlet reduces wear on the PTR valve by absorbing routine thermal expansion instead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e15mm (1\/2\") connection\u003c\/li\u003e\n\u003cli\u003eRelief setting: 1000kPa\u003c\/li\u003e\n\u003cli\u003eExpansion capacity: 10kW (PTR15 series)\u003c\/li\u003e\n\u003cli\u003eForged DR brass body, lead free, stainless steel lever action\u003c\/li\u003e\n\u003cli\u003eHigh-temperature silicone boot and seal\u003c\/li\u003e\n\u003cli\u003e1\" extended body for thicker tank lagging\/insulation\u003c\/li\u003e\n\u003cli\u003eWaterMark certified — AS1357.1 Lic 2639; complies with AS4020\u003c\/li\u003e\n\u003cli\u003eManufactured under ISO 9001 \/ ISO 9002 quality assurance\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AVG","offers":[{"title":"Default Title","offer_id":47927399612565,"sku":"PTRE15-1000-LF","price":91.53,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/2373\/5701\/files\/avg_1000_kpa_extended_pressure_temperature_relief_valve_ptre15-1000_1.jpg?v=1788320291"},{"product_id":"avg-pressure-temperature-relief-valve-15mm-850kpa-with-extended-probe-dr-brass-watermark-as1357-1-ptr15-850ol","title":"AVG Pressure Temperature Relief Valve 15mm - 850kPa with Extended Probe, DR Brass, WaterMark AS1357.1 | PTR15-850OL","description":"\u003cp\u003eThe AVG PTR15-850OL is a 15mm pressure and temperature relief valve fitted with an extended-length temperature probe, set to relieve at 850kPa. The longer probe suits cylinders where the standard-length probe can't reach far enough into the tank to sense temperature accurately.\u003c\/p\u003e\u003cp\u003ePTR valves are safety devices and should be replaced every 4 years, in line with manufacturer and AS\/NZS 3500 guidance. An expansion control valve (ECV) fitted to the cold inlet reduces wear on the PTR valve by absorbing routine thermal expansion instead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e15mm (1\/2\") connection, extended-length probe\u003c\/li\u003e\n\u003cli\u003eRelief setting: 850kPa\u003c\/li\u003e\n\u003cli\u003eExpansion capacity: 10kW (PTR15 series)\u003c\/li\u003e\n\u003cli\u003eForged DR brass body, stainless steel lever action\u003c\/li\u003e\n\u003cli\u003ePolyethylene sheath protects the probe; opens the valve automatically if the electric cut-out fails\u003c\/li\u003e\n\u003cli\u003eWaterMark certified — AS1357.1 Lic 2639; complies with AS4020\u003c\/li\u003e\n\u003cli\u003eManufactured under ISO 9001 \/ ISO 9002 quality assurance\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AVG","offers":[{"title":"Default Title","offer_id":47927399678101,"sku":"PTR15-850OL","price":162.99,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/2373\/5701\/files\/HWM_PTR15-850OLAV_195_1000x1000_AVG_Pressure_Temperature_Relief_Valve_15mm_850KPA_OL_Long_Probe_195mm_AltHero_Transparent_01_OW__88201.1762723372.500.750.jpg?v=1788320294"},{"product_id":"avg-pressure-temperature-relief-valve-20mm-1000kpa-lead-free-dr-brass-watermark-as1357-1-ptr20-1000-lf","title":"AVG Pressure Temperature Relief Valve 20mm - 1000kPa, Lead Free, DR Brass, WaterMark AS1357.1 | PTR20-1000-LF","description":"\u003cp\u003eThe AVG PTR20-1000-LF is a 20mm lead free pressure and temperature relief (PTR\/TPR) valve, set to relieve at 1000kPa — a critical safety device that vents a hot water system if pressure or temperature climbs beyond a safe limit, preventing tank rupture or scalding discharge.\u003c\/p\u003e\u003cp\u003ePTR valves are safety devices and should be replaced every 4 years, in line with manufacturer and AS\/NZS 3500 guidance. An expansion control valve (ECV) fitted to the cold inlet reduces wear on the PTR valve by absorbing routine thermal expansion instead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e20mm (3\/4\") connection\u003c\/li\u003e\n\u003cli\u003eRelief setting: 1000kPa\u003c\/li\u003e\n\u003cli\u003eExpansion capacity: 46kW (PTR20 series)\u003c\/li\u003e\n\u003cli\u003eForged DR brass body, lead free, stainless steel lever action\u003c\/li\u003e\n\u003cli\u003eHigh-temperature silicone boot and seal\u003c\/li\u003e\n\u003cli\u003eWaterMark certified — AS1357.1 Lic 2639; complies with AS4020\u003c\/li\u003e\n\u003cli\u003eManufactured under ISO 9001 \/ ISO 9002 quality assurance\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AVG","offers":[{"title":"Default Title","offer_id":47927399809173,"sku":"PTR20-1000-LF","price":137.23,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/2373\/5701\/files\/avg_1000_kpa_20mm_pressure_temperature_relief_valve_ptr20-1000_1.jpg?v=1788320298"},{"product_id":"avg-pressure-temperature-relief-valve-20mm-850kpa-lead-free-dr-brass-watermark-as1357-1-ptr20-850-lf","title":"AVG Pressure Temperature Relief Valve 20mm - 850kPa, Lead Free, DR Brass, WaterMark AS1357.1 | PTR20-850-LF","description":"\u003cp\u003eThe AVG PTR20-850-LF is a 20mm lead free pressure and temperature relief (PTR\/TPR) valve, set to relieve at 850kPa — a critical safety device that vents a hot water system if pressure or temperature climbs beyond a safe limit, preventing tank rupture or scalding discharge.\u003c\/p\u003e\u003cp\u003ePTR valves are safety devices and should be replaced every 4 years, in line with manufacturer and AS\/NZS 3500 guidance. An expansion control valve (ECV) fitted to the cold inlet reduces wear on the PTR valve by absorbing routine thermal expansion instead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e20mm (3\/4\") connection\u003c\/li\u003e\n\u003cli\u003eRelief setting: 850kPa\u003c\/li\u003e\n\u003cli\u003eExpansion capacity: 46kW (PTR20 series)\u003c\/li\u003e\n\u003cli\u003eForged DR brass body, lead free, stainless steel lever action\u003c\/li\u003e\n\u003cli\u003eHigh-temperature silicone boot and seal\u003c\/li\u003e\n\u003cli\u003eWaterMark certified — AS1357.1 Lic 2639; complies with AS4020\u003c\/li\u003e\n\u003cli\u003eManufactured under ISO 9001 \/ ISO 9002 quality assurance\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AVG","offers":[{"title":"Default Title","offer_id":47927399973013,"sku":"PTR20-850-LF","price":137.23,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/2373\/5701\/files\/avg_850_kpa_20mm_pressure_temperature_relief_valve_ptr20-850_1.jpg?v=1788320300"},{"product_id":"avg-pressure-temperature-relief-valve-20mm-700kpa-lead-free-dr-brass-watermark-as1357-1-ptr20-700-lf","title":"AVG Pressure Temperature Relief Valve 20mm - 700kPa, Lead Free, DR Brass, WaterMark AS1357.1 | PTR20-700-LF","description":"\u003cp\u003eThe AVG PTR20-700-LF is a 20mm lead free pressure and temperature relief (PTR\/TPR) valve, set to relieve at 700kPa — a critical safety device that vents a hot water system if pressure or temperature climbs beyond a safe limit, preventing tank rupture or scalding discharge.\u003c\/p\u003e\u003cp\u003ePTR valves are safety devices and should be replaced every 4 years, in line with manufacturer and AS\/NZS 3500 guidance. An expansion control valve (ECV) fitted to the cold inlet reduces wear on the PTR valve by absorbing routine thermal expansion instead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e20mm (3\/4\") connection\u003c\/li\u003e\n\u003cli\u003eRelief setting: 700kPa\u003c\/li\u003e\n\u003cli\u003eExpansion capacity: 46kW (PTR20 series)\u003c\/li\u003e\n\u003cli\u003eForged DR brass body, lead free, stainless steel lever action\u003c\/li\u003e\n\u003cli\u003eHigh-temperature silicone boot and seal\u003c\/li\u003e\n\u003cli\u003eWaterMark certified — AS1357.1 Lic 2639; complies with AS4020\u003c\/li\u003e\n\u003cli\u003eManufactured under ISO 9001 \/ ISO 9002 quality assurance\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AVG","offers":[{"title":"Default Title","offer_id":47927400071317,"sku":"PTR20-700-LF","price":141.59,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/2373\/5701\/files\/avg_1000_kpa_20mm_pressure_temperature_relief_valve_ptr20-1000_1_c7df71f0-725d-44c8-a6a7-c73df9a9ceef.jpg?v=1788320302"},{"product_id":"avg-pressure-temperature-relief-valve-25mm-1000kpa-lead-free-bronze-body-watermark-as1357-1-ptr25-1000-lf","title":"AVG Pressure Temperature Relief Valve 25mm - 1000kPa, Lead Free, Bronze Body, WaterMark AS1357.1 | PTR25-1000-LF","description":"\u003cp\u003eThe AVG PTR25-1000-LF is a 25mm lead free pressure and temperature relief (PTR\/TPR) valve, set to relieve at 1000kPa — a critical safety device that vents a hot water system if pressure or temperature climbs beyond a safe limit, preventing tank rupture or scalding discharge.\u003c\/p\u003e\u003cp\u003ePTR valves are safety devices and should be replaced every 4 years, in line with manufacturer and AS\/NZS 3500 guidance. An expansion control valve (ECV) fitted to the cold inlet reduces wear on the PTR valve by absorbing routine thermal expansion instead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e25mm (1\") connection\u003c\/li\u003e\n\u003cli\u003eRelief setting: 1000kPa\u003c\/li\u003e\n\u003cli\u003eExpansion\/discharge capacity: 132kW (PTR25 series)\u003c\/li\u003e\n\u003cli\u003eBronze valve body, lead free, stainless steel and brass components\u003c\/li\u003e\n\u003cli\u003eImmersed temperature probe activates between 93-99°C\u003c\/li\u003e\n\u003cli\u003eNormal operation drips 3-6% of hot water tank volume during heating cycles; valve automatically reseats after each discharge\u003c\/li\u003e\n\u003cli\u003eWaterMark certified — AS1357.1 Lic 2639; complies with AS4020\u003c\/li\u003e\n\u003cli\u003eManufactured under ISO 9001 \/ ISO 9002 quality assurance\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AVG","offers":[{"title":"Default Title","offer_id":47927400464533,"sku":"PTR25-1000-LF","price":273.19,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/2373\/5701\/files\/AVG_Temperature_and_Pressure_Releif_Valve_25mm_700kPa_132kW_Product1000px__33454.1741515533.500.750.jpg?v=1788320317"},{"product_id":"avg-pressure-temperature-relief-valve-25mm-850kpa-lead-free-bronze-body-watermark-as1357-1-ptr25-850-lf","title":"AVG Pressure Temperature Relief Valve 25mm - 850kPa, Lead Free, Bronze Body, WaterMark AS1357.1 | PTR25-850-LF","description":"\u003cp\u003eThe AVG PTR25-850-LF is a 25mm lead free pressure and temperature relief (PTR\/TPR) valve, set to relieve at 850kPa — a critical safety device that vents a hot water system if pressure or temperature climbs beyond a safe limit, preventing tank rupture or scalding discharge.\u003c\/p\u003e\u003cp\u003ePTR valves are safety devices and should be replaced every 4 years, in line with manufacturer and AS\/NZS 3500 guidance. An expansion control valve (ECV) fitted to the cold inlet reduces wear on the PTR valve by absorbing routine thermal expansion instead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e25mm (1\") connection\u003c\/li\u003e\n\u003cli\u003eRelief setting: 850kPa\u003c\/li\u003e\n\u003cli\u003eExpansion\/discharge capacity: 132kW (PTR25 series)\u003c\/li\u003e\n\u003cli\u003eBronze valve body, lead free, stainless steel and brass components\u003c\/li\u003e\n\u003cli\u003eImmersed temperature probe activates between 93-99°C\u003c\/li\u003e\n\u003cli\u003eNormal operation drips 3-6% of hot water tank volume during heating cycles; valve automatically reseats after each discharge\u003c\/li\u003e\n\u003cli\u003eWaterMark certified — AS1357.1 Lic 2639; complies with AS4020\u003c\/li\u003e\n\u003cli\u003eManufactured under ISO 9001 \/ ISO 9002 quality assurance\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AVG","offers":[{"title":"Default Title","offer_id":47927400595605,"sku":"PTR25-850-LF","price":273.19,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/2373\/5701\/files\/AVG_Temperature_and_Pressure_Releif_Valve_25mm_700kPa_132kW_Product1000px__33454.1741515533.500.750_334a63d7-92cf-4cbb-b471-0d88a62e3c5b.jpg?v=1788320319"},{"product_id":"avg-pressure-temperature-relief-valve-25mm-700kpa-lead-free-bronze-body-watermark-as1357-1-ptr25-700-lf","title":"AVG Pressure Temperature Relief Valve 25mm - 700kPa, Lead Free, Bronze Body, WaterMark AS1357.1 | PTR25-700-LF","description":"\u003cp\u003eThe AVG PTR25-700-LF is a 25mm lead free pressure and temperature relief (PTR\/TPR) valve, set to relieve at 700kPa — a critical safety device that vents a hot water system if pressure or temperature climbs beyond a safe limit, preventing tank rupture or scalding discharge.\u003c\/p\u003e\u003cp\u003ePTR valves are safety devices and should be replaced every 4 years, in line with manufacturer and AS\/NZS 3500 guidance. 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