The Bell & Gossett Triple Duty® Valve 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.

All Triple Duty® Valves features a calibrated nameplate designed to allow you to accurately balance your system and throttle excess flow. Model 3DV valves utilize a calibrated ball valve design that also provides complete shut-off. The larger Model 3D and 3DS valves utilize a disc style globe valve design that also features a soft seat design that provides complete shut-off and prevents valve chatter. Additionally all valves feature a memory stop or memory button to allow you to return the valve to its set position after shut-off. All B&G Triple Duty® Valves also include a spring loaded check valve to prevent backflow and gravity circulation.

Model 3DV Triple Duty® Valves are manufactured with a brass body, chrome plated brass ball, and glass filled Noryl check valve with a stainless steel spring. They include two extended P/T valves and extended stem to allow for ease of installation in insulated systems, and include a choice of FNPT or rotatable flange inlet connection. They are available in sizes 1” through 2” and are suitable for up to 200 psi and 250°F. Model 3D (angle pattern) and 3DS (straight pattern) valves are manufactured with iron bodies, brass discs with EPDM seats, and stainless steel springs. They are available in sizes 2” – 16”, feature flanged and grooved end connections, and are suitable for either 175 psi (flanged) or 300 psi (grooved) pressure and 250°F.

Features and Benefits

Combines 3 valves in 1, saving time and money

  • Calibrated balance valve with nameplate and memory stop/button
  • Spring loaded check valve
  • Isolation/Shut-off valve

Wide range of sizes and connections

  • Straight Pattern Flanged: 2” – 14”
  • Straight Pattern Grooved: 2” – 12”
  • Balanced Straight Pattern Flanged: 3” – 16”
  • Angle Pattern Flanged: 2” – 10”
  • Model 3DV FNPT and Rotatable Flange: 1” – 2”

Excellent Cv range

  • From 9 to 3,225

Models (see Brochure A-631 for dimensions & weights)

NPT Male:
3DV-1NMF
3DV-1¼NMF
3DV-1½NMF
3DV-2NMF

Rotatable Flange:
3DV-1RFF
3DV-1¼RFF
3DV-1½RFF
3DV-2RFF

ESP Design Plus will shut down on September 30. Please move all existing quotes to Xylem Online ASAP, and use Xylem Online for all new quotes.

General Selection Tools:

  • ESP-PLUS for B&G Centrifugal Pumps, Booster Pumps, Pump Accessories, and Air Separator
  • Xylem online (Recommended Browsers: IE 10 or Google Chrome)
  • ESP-DESIGN PLUS (this software tool will no longer be available after September 30th)
  • ESP-PARTS for replacement parts selection
  • ESP-TANKS for replacement parts selection
  • CAD Drawings for 2D and 3D dimensional drawings in many formats

Heat Exchanger Product Selection

Steam + Water Pressure Reducing Values

Sizing Tools:

Report Bugs/Request Enhancements
Please email the following address to report issues and request enhancements: ebusiness.support@xyleminc.com

Consult your local Bell & Gossett Representative for additional assistance.

Bell & Gossett is a leading manufacturer of pumps, valves, heat exchangers, and accessories for plumbing, wastewater, and HVAC—including steam and heat transfer—applications. To build and operate an efficient water system, you need both the right products and experts who know the application. Here, you can access Bell & Gossett’s trusted network of partners who have the experience you need to get the job done right.

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