Watson-McDaniel WT3003S-13-N Thermostatic Steam Trap

The Watson-McDaniel WT3003S-13-N Thermostatic Steam Trap automatically discharges condensate and air while preventing live steam loss, making it a reliable choice for steam distribution systems. This 3/4" NPT unit uses a 316 stainless steel body with a stainless steel thermal element, valve, and seat, and it includes an integral stainless steel strainer for inline protection. It is repairable with in-line serviceable internal components and features a 5/16" orifice and maximum operating pressure up to 650 PSIG, designed for medium-capacity condensate removal with excellent air venting characteristics. Commonly installed on steam mains, tracing lines, drip legs, and process equipment, it supports steam tracing and supply lines across chemical processing plants, food and beverage facilities, power generation equipment, and industrial process heating applications. The part number is WT3003S-13-N from Watson McDaniel, with common replacements including WT3003-13-N, WT3003SB-13-N, and WT4001S-13-N.