The Spence High Capacity Float & Thermostatic Steam Trap is a mechanical valve that discharges condensate, undesirable air, and non-condensable from a system while trapping in steam. The FTH is a float and thermostatic steam trap. The float actuates the valve via a hinged lever and linkage. The air vent has a balanced pressure design capable of continuously discharging non-condensible. The trap also has a double-seat design to allow for large discharge amounts of condensate. The traps are cast iron bodies suitable for pressure to 200 PSIG with NPT connections.