132206 BELL & GOSSETT 3DV-2NMF TRIPLE DUTY VALVE – 2″ MNPT x FNPT
Product Overview
The Bell & Gossett 132206 Model 3DV-2NMF Triple Duty Valve combines three essential pump discharge functions in one valve: a calibrated balance valve, check valve, and isolation/shut-off valve. Designed for HVAC hydronic systems, this valve simplifies installation, improves system control, and reduces the number of components required in pump piping.
Its calibrated ball design allows accurate system balancing and throttling of excess flow, while the memory stop ensures the valve can return to its original set position after shut-off. Built from durable brass, the 3DV delivers long service life and reliable performance in demanding water circulation applications.
✅ Key Features
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Three valves in one: balance, check, and shut-off
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Calibrated balancing valve for precise flow control
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Built-in check valve prevents reverse flow
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Isolation function for easy service and maintenance
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Memory stop allows return to preset balance point
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Straight-through piping configuration
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Durable brass body construction
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Ideal for pump discharge applications in HVAC systems
📋 Specifications
| Specification | Details |
|---|
| Part Number |
132206 |
| Manufacturer |
Bell & Gossett |
| Model |
3DV-2NMF |
| Valve Type |
Triple Duty Valve |
| Connection Size |
2 Inch |
| Connection Type |
MNPT x FNPT |
| Piping Configuration |
Straight |
| Flow Coefficient (Cv) |
28 |
| Body Material |
Brass |
| Valve Application |
Water |
| Maximum Pressure |
200 PSI |
| Maximum Temperature |
250°F |
🚨 Common Symptoms This Valve Helps Resolve
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Difficulty balancing pump flow
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Reverse flow when pump shuts off
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Excessive system noise or vibration
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Need for multiple valves on pump discharge
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Inefficient system control
❓ Frequently Asked Questions (FAQ)
Q: What does a triple duty valve do?
A: It combines a balancing valve, check valve, and isolation valve into one unit, reducing installation complexity and saving space.
Q: Where is this valve typically installed?
A: On the discharge side of a pump in HVAC hydronic systems.
Q: What is the Cv rating?
A: This valve has a Cv of 28, allowing efficient flow control.
Q: Can the valve return to its original balance setting after shut-off?
A: Yes, the memory stop feature allows the valve to return to its preset position.
Q: What type of systems is this valve used for?
A: Water-based HVAC and hydronic heating/cooling systems.
🛒 Shopping Tips
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Confirm 2″ MNPT x FNPT connection compatibility
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Match Cv rating to system flow requirements
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Install on pump discharge for best performance
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Use isolation feature to simplify future maintenance
