Armstrong 313 1/2 in SW Inverted Bucket Steam Trap, 250 PSIG PMO

Armstrong's 300 Series inverted bucket steam traps are forged carbon steel traps for vertical installation, available with screwed, socket weld or flanged connections. A leverage system multiplies the bucket's force to open the valve against system pressure, the free-floating mechanism has no fixed pivots to wear, and the discharge orifice sits at the top of the trap where dirt cannot collect. A water seal around the orifice prevents live steam loss.

Part D690852 is the Armstrong 313 in 1/2 in SW, rated 250 psig maximum operating pressure.

Model 313 specifications

• Maximum Capacity: 4,400 lb/hr (1,996 kg/hr)
• Maximum Allowable Pressure: 1,080 psig @ 700°F (74 bar @ 371°C)
• Body Material: ASTM A105 Forged Steel, Cast 316 Stainless Steel
• Maximum Operating Pressure: 650 psig (45 bar)
• Connection Type: Screwed, Socketweld, Flanged
• Connection Size: 1/2″ (15 mm) 3/4″ (20 mm) 1″ (25 mm)

Manufacturer documentation: data sheet, installation and maintenance manual.