074439 TUTCO SUREHEAT threaded inline heater is a Style B design that can handle a maximum air pressure of 150 psi (10 bar). This TUTCO SUREHEAT air heater model allows a minimal air leak out through the power wires. This threaded inline hot air heater is designed for high pressure air applications needing a 2.5" NPT sized heater. https://jobcosupply.com/store/074439-tutco-sureheat-hot-air-heater-threaded-inline-version-24000-watts/