Spirax Sarco 1803055 BT6-BL 20MM Steam Trap Assembly

Spirax Sarco BT6-BL 20 mm sanitary balanced pressure thermostatic steam trap assembly (1803055) is a low-capacity, hygienic condensate trap designed to remove condensate from clean, pure steam lines with minimal condensate retention. Built in 316L stainless steel with a crevice‑free body and a 15° angled seat for full drainability, it uses sanitary clamp ends (tri-clamp compatible) in a 3/4 in. (20 mm) size and is electropolished to a 0.375 Ra finish. As a balanced‑pressure thermostatic trap, it opens in response to condensate temperature with limited sub‑cooling, typically within 2°C of steam saturation at operating pressures below about 2.5 bar g; distributor data often lists 165°C and 6 bar as representative conditions for this low‑capacity BT6‑BL variant. This model is intended for hygienic applications such as sterile steam barriers, CIP/SIP of vessels and process lines, and block‑and‑bleed installations, making it suitable for pharmaceutical, biotech, and food‑processing environments that require ASME BPE‑compliant sanitary components. The 1803055 designation confirms the 3/4 in./20 mm size and sanitary clamp compatibility, enabling straightforward integration with standard tri‑clamp systems in cleanroom or aseptic piping layouts.