Armstrong International B and BI Series Float and Thermostatic Steam Trap

The Armstrong International B and BI Series Float and Thermostatic Steam Trap provides reliable condensate drainage and high air-venting capacity for heating applications. Designed for long-lasting performance and efficiency, these traps ensure continuous operation while maintaining economy. Their thermostatic air vent is engineered for a responsive reaction to the steam pressure to temperature curve, allowing for effective air removal at all operating pressures, from vacuum conditions up to 30psig.
The B Series features dual inlet connections (except for 1/2in and 3/4in sizes), providing flexible installation options. The BI Series, available in sizes 1/2in, 3/4in, and 1in, is designed with in-line connections for seamless integration into piping systems. Constructed with a durable cast iron body (ASTM A48 Class 30) and stainless steel internals, these traps offer excellent resistance to wear and corrosion.
Features
15 or 30psig maximum operating pressure (model dependent)
Material construction:
Cast iron body (ASTM A48 Class 30)
Stainless steel internals
Air vent: Stainless steel and bronze with phosphor bronze bellows, caged in stainless steel
Inlet configuration:
B Series with dual inlet connections (except 1/2in and 3/4in)
BI Series in-line connections for sizes 1/2in, 3/4in, and 1in
Installation orientation: horizontal installation required