Armstrong AB-3500 Bimetallic Steam Trap

Armstrong Model AB-3500: bimetallic steam trap from Armstrong International. See the manufacturer documentation linked below for specifications.

Part D101856 is the Armstrong AB-3500.

Model AB-3500 specifications

• Capacities To: 3200 lb/hr (1450 kg/hr)
• Maximum Allowable Pressure: 465 psig (32 bar)
• Maximum Allowable Temperature: 500°F 260°C
• Body Material: ASTM A-351 GR. CF8 Stainless Steel
• Maximum Operating Pressure: 320 psig (22 bar)
• Connection Type: 2-Bolt, Screwed, Socketweld, Flanged
• Connection Size: 1/2″ (15 mm) 3/4″ (20 mm) 1″ (25 mm)

Manufacturer documentation: data sheet, installation and maintenance manual.