meticulously engineered for precise air pressure monitoring in various heating systems

As a critical HVAC control component

This compact unit

Ideal for service work

Rated for a maximum working pressure of 690 psig (4

Spirax-Sarco 55440 Disc 30067439-890 meticulously engineered for precise airThe Spirax Sarco 55440 is a precision engineered thermodynamic steam trap disc designed for use in 3 4" TD52, TDC, TD52H, and UTD52SLH series traps. Constructed from hardened 420 stainless steel, this disc serves as the primary moving component, utilizing the kinetic energy of flash steam to regulate the discharge of condensate. In high pressure steam systems, maintaining a tight seal is critical to preventing live steam loss; the 55440 disc is ground