Everyone has tried the cheap Chinese copies – they stick closed after six months and flood the steam line. The Spirax FT14 (cast iron) and FT44 (carbon/stainless steel) just keep working. The big stainless ball float never hangs up, the air vent is a proper bimetallic ring that actually opens when cold, and the whole thing is built like a tank. Most plants pull them out after 12–18 years only because the gasket finally leaks, not because the trap failed.

• Big stainless steel ball float – no sticking, no water hammer
• Real thermostatic air vent – blasts air out on start-up
• In-line repairable – change seat and float in 20 minutes
• FT44 has stainless body – no rust even on outdoor lines
• Works in any position – horizontal or vertical
• Handles up to 32 bar and 300 °C

• Steam mains and drip legs
• Heat exchangers and reboilers
• Tracing lines (with smaller sizes)
• Outdoor steam lines (FT44)

Q: Can I repair it in line?A: Yes – four bolts, change seat and ball, back running in half an hour.

Q: Will it freeze outdoors?A: No – built-in thermostatic vent closes when cold, body stays full of water.

Phone/WhatsApp/WeChat: +8615000725058
Email: edwardzhao@gbsxj.com

• FTS14 – stainless compact version
• BPT13 – balanced pressure for tracing
• TD42 – thermodynamic for high pressure