Spirax-Sarco TD42L M18 W Thermodynamic Steam Trap

The Spirax-Sarco TD42L M18 W is a 3/4‑inch stainless steel thermodynamic steam trap with a blowdown valve option, designed for reliable condensate removal in low‑to‑medium capacity steam systems. It uses Spirax‑Sarco’s maintainable thermodynamic disc mechanism, featuring an integral strainer and a replaceable seating surface for long service life, with an oxidation‑resistant ENP finish for corrosion resistance. This compact, rugged trap is well suited for heat exchangers, steam jackets, and process coils where rapid condensate drainage is critical, and supports straightforward maintenance that can be performed without removing the unit from the line in many installations. The TD42L family is rated up to 63 bar g (approximately 900 psi) and 400°F (204°C), making it appropriate for high‑temperature saturated steam duties; the W designation indicates inclusion of a blowdown valve to aid isolation and inspection during service.