Description
The Hoffman Specialty 404340 (Model B1180A-3) is a Series B1 Cast Iron Inverted Bucket Steam Trap engineered for dependable, continuous condensate discharge in commercial and industrial steam systems. Built to handle demanding operating conditions, this trap features a 3/4″ NPT connection and a maximum working pressure of 180 PSI, making it well-suited for a wide range of medium- to high-pressure steam applications.
The inverted bucket mechanism is one of the most proven and durable steam trap designs in the industry. It operates on the principle of buoyancy — the inverted bucket rises when steam is present (closing the valve) and sinks when condensate or air accumulates (opening the valve to discharge). This design provides excellent resistance to water hammer and delivers long service life with minimal maintenance.
The .094″ orifice is precisely sized to optimize condensate throughput while preventing live steam loss, helping to maximize energy efficiency across your steam distribution system.
Key Features
- Model: B1180A-3 (Series B1)
- SKU: 404340
- Connection Size: 3/4″ NPT
- Maximum Working Pressure: 180 PSI
- Orifice Size: .094″
- Body Material: Cast Iron
- Trap Type: Inverted Bucket
Applications
- Commercial and industrial steam distribution systems
- Process heating and steam tracing lines
- Drip legs and steam mains
- Heating coils and heat exchangers
- Medium- to high-pressure steam service up to 180 PSI
Why Choose an Inverted Bucket Steam Trap?
Inverted bucket steam traps are renowned for their robust, mechanically simple design and resistance to the effects of water hammer — a common concern in steam systems. The cast iron body of the Series B1 provides excellent durability in demanding environments, while the precision-machined orifice ensures consistent, efficient condensate removal. This trap is an ideal choice for facilities looking for a reliable, low-maintenance solution to manage condensate in steam heating and process systems.
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