Wide Application - HAXPLT1931 natural gas pilot assembly replacement for Hayward H-series millivolt/electronic ED1 style and H150/H200/H210/H250/H300/H350/H400 millivolt pool and spa/hot tub heaters, Comes with a short pilot tube for easy installation. Compatible Models – H150ED1, H150PED1, H200ED1, H200PED1, H250ED1, H250PED1, H300ED1, H300PED1, H350ED1, H350PED1, H400ED1, H400PED1, H1501, H150ED2, H150P1, H150PED2, H2001, H200ED2, H200P1, H200PED2, H2501, H250ED2, H250P1, H250PED2, H3001, H300ED2, H300P1, H300PED2, H3501, H350ED2, H350P1, H350PED2, H4001, H400ED2, H400P1, H400PED2, H250, H250N, H250P, H400, H400N, H400P Powerful Function – Bring warm water to your pool and keep it comfortable. You will enjoy swimming at night and in cold weather. Perfect ignition, no stuttering, no hassle when igniting! Safe & Stable Work - The HAXPLT1931 pilot assembly, natural gas, includes CHXGEN1930 millivolt pilot generator which delivers 750 millivolts maximum (0.75 vdc). Under normal circumstances it should be between 400 and 500 mv. Superior Material – It is made of stainless steel and heat-resistant plastic, durable, with a long service life, and subjected to 100% quality testing to ensure optimal performance, provide the ultimate safety and reliability. Easy to Install - Without making any modifications to the lead component, it can be replaced directly, ensuring your heating system is back up and running in no time. Satisfaction Guarantee - Besttruck values customers shopping experience and provides customers with a good shopping environment. If you are not satisfied with the product when you receive, you can choose to return it within 30 days, we provide a one-year warranty, or you can feel free to contact us.