Armstrong International 814-1 1/4-15 1-1/4″ NPT 15 PSI Cast Iron Inverted Bucket Steam Trap

Description

Armstrong International Series 814 Cast Iron Inverted Bucket Steam Trap

The Armstrong International Series 814 is a heavy-duty cast iron inverted bucket steam trap engineered for reliable, energy-efficient condensate removal in commercial and industrial steam systems. With a 1-1/4″ NPT connection and a maximum operating pressure of 15 PSI, this trap is well-suited for low-pressure steam heating applications including unit heaters, radiators, heat exchangers, and process equipment.

How It Works

The inverted bucket mechanism is one of the most proven and durable steam trap designs available. As condensate enters the trap body, the inverted bucket sinks and opens the discharge valve, allowing condensate and non-condensable gases to be expelled. When steam enters, the bucket becomes buoyant, rises, and closes the valve — preventing live steam loss. This intermittent, mechanically-driven operation provides dependable performance with minimal energy waste.

Key Features

• Series 814 cast iron body construction for long service life
• 1-1/4″ NPT inlet and outlet connections
• Maximum operating pressure: 15 PSI
• 5/8″ orifice for optimized condensate discharge capacity
• Inverted bucket mechanism provides robust, reliable operation
• Suitable for low-pressure steam heating and process applications
• Armstrong International quality — a trusted name in steam system components

Typical Applications

• Unit heaters and radiators
• Heat exchangers and coils
• Low-pressure steam distribution systems
• Industrial and commercial process heating
• Steam mains and drip legs

Specifications

• SKU: 814-1 1/4-15
• Brand: Armstrong International
• Series: 814
• Body Material: Cast Iron
• Connection Size: 1-1/4″ NPT
• Maximum Operating Pressure: 15 PSI
• Orifice Size: 5/8″
• Trap Type: Inverted Bucket