Xylem-Bell & Gossett 132121 2" Flanged Triple Duty Valve 3DS-2S Straight Pattern

The Bell & Gossett 132121 is a combination valve that provides all of the functions normally required on the discharge side of hydronic pump systems. The design combines three valves into one: a calibrated balance valve, a spring loaded check valve, and an isolation/shut-off valve. The combination of multiple valves helps save space and reduces installation time and money.

Key Features:

• 3-Valves in one: center guided non-slam check, calibrated balance and shut-off
• Cast iron body, brass seat, cast bronze disc and stainless steel stem
• Replaceable bronze disc with EPDM insert and chatter-preventing spring
• Calibrated nameplate and memory button allow return of the valve to the balanced position after shut-off
• Backseating valve stem allows repacking under full-line pressure
• Maximum range of control (8-9 turns)
• Spring loaded with soft seat design
• Brass read-out valves for accurate balancing

Specifications:

• Model: 3DS-2S
• Size: 2 inch
• Connection: Flanged
• Pattern: Straight
• Maximum Pressure: 175 PSI at 250°F
• Body Material: Cast Iron/Ductile Iron
• Disc Material: Bronze with EPDM Insert
• Stem Material: Stainless Steel
• Seat Material: Brass

The soft seat design of the disc prevents noise and potential damage that can be associated with valve chatter. It also provides positive shut-off allowing you isolate the pump from the rest of your system. The non-slam check valve prevents backflow and gravity circulation in staged pumping and parallel pumping systems, preventing damage to the pump and unwanted heat transfer through your system. Ideal for HVAC hydronic systems, commercial heating applications, and plumbing systems requiring multi-function valve control.