Armstrong International 175A4 1″ NPT 175 PSI Series A Cast Iron F&T Steam Trap

Description

The Armstrong International 175A4 is a Series A Cast Iron Float & Thermostatic (F&T) Steam Trap engineered for dependable condensate removal and air venting in commercial and industrial steam systems. With a robust cast iron body and a standard 1″ NPT connection, this trap is built to handle demanding steam system conditions with a maximum allowable pressure of 175 PSI.

Float & thermostatic traps combine the continuous discharge capability of a float mechanism with the automatic air-venting function of a thermostatic element. The integrated thermostatic air vent purges non-condensable gases on startup and during operation, preventing air binding and ensuring efficient heat transfer throughout the system. The precision-machined 7/64″ orifice provides consistent, controlled condensate flow matched to typical system loads.

Key Features

• Series A Cast Iron body construction for durability in steam service
• Float & Thermostatic (F&T) operating mechanism for continuous condensate discharge
• Integrated thermostatic air vent eliminates air binding and improves system efficiency
• 1″ NPT standard pipe connection for straightforward installation
• 175 PSI maximum allowable working pressure
• 7/64″ precision orifice for controlled condensate flow

Specifications

• SKU: 175A4
• Brand: Armstrong International
• Series: A
• Body Material: Cast Iron
• Connection Type: Standard (NPT)
• Connection Size: 1″ NPT
• Maximum Allowable Pressure: 175 PSI
• Orifice Size: 7/64″
• Trap Type: Float & Thermostatic (F&T)
• Air Vent: Thermostatic Air Vent Included

Applications

• Commercial and industrial steam heating systems
• Process steam equipment
• Unit heaters, coils, and heat exchangers
• Steam mains and distribution systems requiring reliable air venting