{"title":"Apollo Vacuum \u0026 Thermal Expansion Relief Valves","description":"\u003cp\u003eApollo vacuum relief, atmospheric vacuum breakers, and thermal expansion relief valves. Brass and bronze construction. MNPT and FNPT connections.\u003c\/p\u003e","products":[{"product_id":"apollo-38-series-vacuum-atmospheric-vacuum-breaker","title":"Apollo 38 Series Vacuum \u0026 Atmospheric Vacuum Breaker","description":"\u003cdiv style=\"border-left:4px solid #1a1a1a;padding:10px 16px;margin-bottom:16px\"\u003e\n\u003cspan style=\"color:#e87722;font-weight:700\"\u003e✔\u003c\/span\u003e \u003cstrong\u003eIn Stock – Fast Shipping from Multiple U.S. Warehouses\u003c\/strong\u003e\u003cbr\u003e\n\u003cspan style=\"color:#e87722;font-weight:700\"\u003e✔\u003c\/span\u003e \u003cstrong\u003eApollo 38 Series – ASME Rated, CRN Registered\u003c\/strong\u003e\u003cbr\u003e\n\u003cspan style=\"color:#e87722;font-weight:700\"\u003e✔\u003c\/span\u003e \u003cstrong\u003eVacuum \u0026amp; Atmospheric Relief Valve – Vacuum \/ Atmospheric Relief\u003c\/strong\u003e\u003cbr\u003e\n\u003cspan style=\"color:#e87722;font-weight:700\"\u003e✔\u003c\/span\u003e \u003cstrong\u003eMultiple Sizes \u0026amp; Pressure Settings – Select from Dropdown\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cp style=\"color:#c0392b;font-size:0.92rem;font-weight:700\"\u003eHigh Demand Item – Frequently Reordered by Contractors\u003c\/p\u003e\n\u003cp\u003eApollo 38 Series vacuum \u0026amp; atmospheric relief valve for vacuum \/ atmospheric relief service. Bronze \/ Brass body, MNPT connections. ASME rated and CRN registered. Multiple sizes and pressure settings available — select from the dropdown above.\u003c\/p\u003e\n\u003cp\u003eDesigned to protect piping systems and pressure vessels from overpressure. Automatically opens to relieve excess pressure and reseats when pressure returns to safe operating range.\u003c\/p\u003e\n\u003ch2 style=\"font-size:1.5rem;font-weight:900;text-transform:uppercase\"\u003eApplications\u003c\/h2\u003e\n\u003cul style=\"font-size:1.1rem;line-height:1.8\"\u003e\n\u003cli\u003eHot water heater and boiler overpressure protection\u003c\/li\u003e\n\u003cli\u003eSteam and air system pressure relief\u003c\/li\u003e\n\u003cli\u003eHVAC and hydronic heating systems\u003c\/li\u003e\n\u003cli\u003eCommercial and industrial pressure vessel protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"font-size:1.5rem;font-weight:900;text-transform:uppercase\"\u003eKey Features\u003c\/h2\u003e\n\u003cul style=\"font-size:1.1rem;line-height:1.8\"\u003e\n\u003cli\u003eSeries: 38 Series\u003c\/li\u003e\n\u003cli\u003eType: Vacuum \u0026amp; Atmospheric Relief Valve\u003c\/li\u003e\n\u003cli\u003eService: Vacuum \/ Atmospheric Relief\u003c\/li\u003e\n\u003cli\u003eBody: Bronze \/ Brass\u003c\/li\u003e\n\u003cli\u003eConnection: MNPT\u003c\/li\u003e\n\u003cli\u003eASME Rated\u003c\/li\u003e\n\u003cli\u003eCRN Registered\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\u003ch2 style=\"font-size:1.5rem;font-weight:900;text-transform:uppercase\"\u003eSpecifications\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:1rem\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#f5f5f5\"\u003e\n\u003cth style=\"padding:8px;text-align:left;font-size:0.85rem;text-transform:uppercase\"\u003eAttribute\u003c\/th\u003e\n\u003cth style=\"padding:8px;text-align:left;font-size:0.85rem;text-transform:uppercase\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eSeries\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003e38 Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fafafa\"\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eValve Type\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eVacuum \u0026amp; Atmospheric Relief Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eService\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eVacuum \/ Atmospheric Relief\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fafafa\"\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eBody Material\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eBronze \/ Brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eConnection\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eMNPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fafafa\"\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eCertifications\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eASME Rated, CRN Registered\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 style=\"font-size:1.5rem;font-weight:900;text-transform:uppercase\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp style=\"font-size:1.1rem;font-weight:700\"\u003eWhat pressure settings are available?\u003c\/p\u003e\n\u003cp style=\"font-size:1.1rem\"\u003eMultiple pressure settings are available — select your size and pressure from the dropdown above. Contact us if you need a setting not listed.\u003c\/p\u003e\n\u003cp style=\"font-size:1.1rem;font-weight:700\"\u003eIs this valve ASME rated?\u003c\/p\u003e\n\u003cp style=\"font-size:1.1rem\"\u003eYes. Apollo 38 Series safety relief valves are ASME rated and CRN registered for use in pressure systems across North America.\u003c\/p\u003e\n\u003cp style=\"font-size:1.1rem;font-weight:700\"\u003eCan I get test reports or certifications?\u003c\/p\u003e\n\u003cp style=\"font-size:1.1rem\"\u003eFactory test reports and certification documents are available upon request. Contact us at sales@pvfpro.com.\u003c\/p\u003e\n\u003ch2 style=\"font-size:1.5rem;font-weight:900;text-transform:uppercase\"\u003eWhy Contractors Choose This Product\u003c\/h2\u003e\n\u003cul style=\"font-size:1.1rem;line-height:1.8\"\u003e\n\u003cli\u003eCRN registered — compliant across Canadian jurisdictions\u003c\/li\u003e\n\u003cli\u003eASME rated — compliant for pressure vessel and boiler service\u003c\/li\u003e\n\u003cli\u003eBronze \/ Brass body — reliable in hot water, steam, and air service\u003c\/li\u003e\n\u003cli\u003eWide range of sizes and pressure settings available\u003c\/li\u003e\n\u003cli\u003eFactory test reports available on request\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"border-left:4px solid #e87722;padding:10px 16px;margin-top:20px\"\u003e\n\u003cspan style=\"color:#e87722;font-weight:700\"\u003e✔\u003c\/span\u003e In Stock – Ready to Ship\u003cbr\u003e\n\u003cspan style=\"color:#e87722;font-weight:700\"\u003e✔\u003c\/span\u003e Bulk Pricing Available\u003cbr\u003e\n\u003cspan style=\"color:#e87722;font-weight:700\"\u003e✔\u003c\/span\u003e Fast Shipping from Multiple U.S. Warehouses\u003cbr\u003e\n\u003cspan style=\"color:#e87722;font-weight:700\"\u003e✔\u003c\/span\u003e Built for Contractors, Not DIY\n\u003c\/div\u003e\n\u003cp style=\"margin-top:16px\"\u003eBuying in volume? \u003ca href=\"mailto:sales@pvfpro.com\"\u003eContact us for contractor pricing or bulk discounts.\u003c\/a\u003e\u003c\/p\u003e","brand":"Apollo","offers":[{"title":"1\/2\" \/ Apollo Bronze Atmospheric Vacuum Breaker","offer_id":51895064232253,"sku":"3820301","price":132.98,"currency_code":"USD","in_stock":true},{"title":"1\/2\" \/ Apollo Forged Brass Atmospheric Vacuum B","offer_id":51895064265021,"sku":"3820306","price":180.25,"currency_code":"USD","in_stock":true},{"title":"3\/4\" \/ Apollo Brass Vacuum Relief Valve with Sa","offer_id":51895064297789,"sku":"37LF20201","price":66.42,"currency_code":"USD","in_stock":true},{"title":"3\/4\" \/ Shutoff and Thermal Expansion Relief Val","offer_id":51895064330557,"sku":"78RV224125","price":167.34,"currency_code":"USD","in_stock":true},{"title":"3\/4\" \/ Apollo Bronze Atmospheric Vacuum Breaker","offer_id":51895064363325,"sku":"3810401","price":269.77,"currency_code":"USD","in_stock":true},{"title":"3\/4\" \/ Apollo Brass Hose Bibb Dual Check Backfl","offer_id":51895064396093,"sku":"3830402","price":374.06,"currency_code":"USD","in_stock":true},{"title":"3\/8\" \/ Apollo Forged Brass Atmospheric Vacuum B","offer_id":51895064428861,"sku":"3820206","price":173.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/2471\/4301\/files\/37_p.png?v=1782769192"},{"product_id":"apollo-78rv-series-thermal-expansion-relief-valve","title":"Apollo 78RV Series Thermal Expansion Relief Valve","description":"\u003cdiv style=\"border-left:4px solid #1a1a1a;padding:10px 16px;margin-bottom:16px\"\u003e\n\u003cspan style=\"color:#e87722;font-weight:700\"\u003e✔\u003c\/span\u003e \u003cstrong\u003eIn Stock – Fast Shipping from Multiple U.S. Warehouses\u003c\/strong\u003e\u003cbr\u003e\n\u003cspan style=\"color:#e87722;font-weight:700\"\u003e✔\u003c\/span\u003e \u003cstrong\u003eApollo 78RV Series – ASME Rated, CRN Registered\u003c\/strong\u003e\u003cbr\u003e\n\u003cspan style=\"color:#e87722;font-weight:700\"\u003e✔\u003c\/span\u003e \u003cstrong\u003eThermal Expansion Relief Valve – Thermal Expansion Relief\u003c\/strong\u003e\u003cbr\u003e\n\u003cspan style=\"color:#e87722;font-weight:700\"\u003e✔\u003c\/span\u003e \u003cstrong\u003eMultiple Sizes \u0026amp; Pressure Settings – Select from Dropdown\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cp style=\"color:#c0392b;font-size:0.92rem;font-weight:700\"\u003eHigh Demand Item – Frequently Reordered by Contractors\u003c\/p\u003e\n\u003cp\u003eApollo 78RV Series thermal expansion relief valve for thermal expansion relief service. Brass body, Threaded connections. ASME rated and CRN registered. Multiple sizes and pressure settings available — select from the dropdown above.\u003c\/p\u003e\n\u003cp\u003eDesigned to protect piping systems and pressure vessels from overpressure. Automatically opens to relieve excess pressure and reseats when pressure returns to safe operating range.\u003c\/p\u003e\n\u003ch2 style=\"font-size:1.5rem;font-weight:900;text-transform:uppercase\"\u003eApplications\u003c\/h2\u003e\n\u003cul style=\"font-size:1.1rem;line-height:1.8\"\u003e\n\u003cli\u003eHot water heater and boiler overpressure protection\u003c\/li\u003e\n\u003cli\u003eSteam and air system pressure relief\u003c\/li\u003e\n\u003cli\u003eHVAC and hydronic heating systems\u003c\/li\u003e\n\u003cli\u003eCommercial and industrial pressure vessel protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"font-size:1.5rem;font-weight:900;text-transform:uppercase\"\u003eKey Features\u003c\/h2\u003e\n\u003cul style=\"font-size:1.1rem;line-height:1.8\"\u003e\n\u003cli\u003eSeries: 78RV Series\u003c\/li\u003e\n\u003cli\u003eType: Thermal Expansion Relief Valve\u003c\/li\u003e\n\u003cli\u003eService: Thermal Expansion Relief\u003c\/li\u003e\n\u003cli\u003eBody: Brass\u003c\/li\u003e\n\u003cli\u003eConnection: Threaded\u003c\/li\u003e\n\u003cli\u003eASME Rated\u003c\/li\u003e\n\u003cli\u003eCRN Registered\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\u003ch2 style=\"font-size:1.5rem;font-weight:900;text-transform:uppercase\"\u003eSpecifications\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:1rem\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#f5f5f5\"\u003e\n\u003cth style=\"padding:8px;text-align:left;font-size:0.85rem;text-transform:uppercase\"\u003eAttribute\u003c\/th\u003e\n\u003cth style=\"padding:8px;text-align:left;font-size:0.85rem;text-transform:uppercase\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eSeries\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003e78RV Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fafafa\"\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eValve Type\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eThermal Expansion Relief Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eService\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eThermal Expansion Relief\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fafafa\"\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eBody Material\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eConnection\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eThreaded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fafafa\"\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eCertifications\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #eee\"\u003eASME Rated, CRN Registered\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 style=\"font-size:1.5rem;font-weight:900;text-transform:uppercase\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp style=\"font-size:1.1rem;font-weight:700\"\u003eWhat pressure settings are available?\u003c\/p\u003e\n\u003cp style=\"font-size:1.1rem\"\u003eMultiple pressure settings are available — select your size and pressure from the dropdown above. Contact us if you need a setting not listed.\u003c\/p\u003e\n\u003cp style=\"font-size:1.1rem;font-weight:700\"\u003eIs this valve ASME rated?\u003c\/p\u003e\n\u003cp style=\"font-size:1.1rem\"\u003eYes. Apollo 78RV Series safety relief valves are ASME rated and CRN registered for use in pressure systems across North America.\u003c\/p\u003e\n\u003cp style=\"font-size:1.1rem;font-weight:700\"\u003eCan I get test reports or certifications?\u003c\/p\u003e\n\u003cp style=\"font-size:1.1rem\"\u003eFactory test reports and certification documents are available upon request. Contact us at sales@pvfpro.com.\u003c\/p\u003e\n\u003ch2 style=\"font-size:1.5rem;font-weight:900;text-transform:uppercase\"\u003eWhy Contractors Choose This Product\u003c\/h2\u003e\n\u003cul style=\"font-size:1.1rem;line-height:1.8\"\u003e\n\u003cli\u003eCRN registered — compliant across Canadian jurisdictions\u003c\/li\u003e\n\u003cli\u003eASME rated — compliant for pressure vessel and boiler service\u003c\/li\u003e\n\u003cli\u003eBrass body — reliable in hot water, steam, and air service\u003c\/li\u003e\n\u003cli\u003eWide range of sizes and pressure settings available\u003c\/li\u003e\n\u003cli\u003eFactory test reports available on request\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"border-left:4px solid #e87722;padding:10px 16px;margin-top:20px\"\u003e\n\u003cspan style=\"color:#e87722;font-weight:700\"\u003e✔\u003c\/span\u003e In Stock – Ready to Ship\u003cbr\u003e\n\u003cspan style=\"color:#e87722;font-weight:700\"\u003e✔\u003c\/span\u003e Bulk Pricing Available\u003cbr\u003e\n\u003cspan style=\"color:#e87722;font-weight:700\"\u003e✔\u003c\/span\u003e Fast Shipping from Multiple U.S. Warehouses\u003cbr\u003e\n\u003cspan style=\"color:#e87722;font-weight:700\"\u003e✔\u003c\/span\u003e Built for Contractors, Not DIY\n\u003c\/div\u003e\n\u003cp style=\"margin-top:16px\"\u003eBuying in volume? \u003ca href=\"mailto:sales@pvfpro.com\"\u003eContact us for contractor pricing or bulk discounts.\u003c\/a\u003e\u003c\/p\u003e","brand":"Apollo","offers":[{"title":"3\/4\" \/ See Description","offer_id":51895064625469,"sku":"78RV224125","price":167.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/2471\/4301\/files\/78RV_p.png?v=1782769199"}],"url":"https:\/\/pvfpro.com\/collections\/apollo-vacuum-thermal-expansion-relief-valves.oembed","provider":"PVFPRO","version":"1.0","type":"link"}