
PB56 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $49.99 | Condition is New, New Watts 0207500 PB-56 3/4" Purge and Balancing Valve NOS 3/4 PB 56, FREE SHIPPING | 98.7% |
![]() | $39.99 | Condition is New, Vintage Watts PB56 3/4" Purge and Balancing Valve U.S.A. New Old Stock #1, shipping cost = $11.95 | ![]() |
![]() | $39.99 | Condition is New, Vintage Watts PB56 3/4" Purge and Balancing Valve U.S.A. New Old Stock #2, shipping cost = $11.95 | ![]() |
![]() | $52.00 | Condition is New, New Watts PB-56 3/4" Purge and Balancing Valve NOS 3/4 PB 56, shipping cost = $9.42 | 98.7% |
![]() | $63.88 | Condition is New, New Watts 0207500 PB-56 3/4" Purge and Balancing Valve NOS 3/4 PB 56, FREE SHIPPING | 99.8% |
![]() | $69.88 | Top Pick! Condition is New, New Watts 0950735 PB-56 3/4" Purge and Balancing Valve NOS 3/4 PB 56, FREE SHIPPING | 99.8% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $42.97 | Condition is New – Open box, Watts 0207500 PB-56 3/4" Purge and Balancing Valve NOS 3/4 PB 56, FREE SHIPPING | 100.0% |
![]() | $40.00 | Condition is New – Open box, Watts 0207500 PB56 3/4" Purge and Balancing Valve size 3/4 in. NOS , shipping cost = $18.95 | 100.0% |

The Watts PB56 3/4 Purge Balancing Valve, manufactured by Watts Water Technologies, is a crucial component in water heating systems, designed to ensure optimal performance and energy efficiency. This valve is specifically engineered for residential and light commercial applications in the United States.
The PB56 valve is a purge balancing valve, which means it is responsible for maintaining a consistent water temperature and pressure within the system. It achieves this by purging air from the lines, ensuring that only water flows through the system. This is particularly important during the start-up process of a water heater or when adding new components to the system.
The valve is constructed from brass, a durable and corrosion-resistant material. It features a 3/4 inch NPT thread connection, making it compatible with standard plumbing systems. The valve body is designed with a balanced diaphragm, which allows for even pressure distribution and ensures long-lasting performance.
The Watts PB56 Purge Balancing Valve is also equipped with a conveniently located bleed screw. This feature allows for easy air purging, ensuring that the system is free of any trapped air pockets that could negatively impact the system's efficiency and overall performance.
Installation of the Watts PB56 Purge Balancing Valve is straightforward. It can be installed on the cold water line leading into the water heater, or on the return line from the heater to the system. The valve comes with clear installation instructions, making it an ideal choice for DIY enthusiasts or professional plumbers.
In summary, the Watts PB56 3/4 Purge Balancing Valve is an essential component in maintaining the optimal performance and energy efficiency of water heating systems. Its durable brass construction, balanced diaphragm design, and convenient bleed screw make it a reliable and user-friendly solution for purging air from water lines. This valve is a proven choice for residential and light commercial applications in the United States.
The Watts PB56 3/4 purge balancing valve is a crucial component in heating systems, particularly those using fuel oil. This valve aids in maintaining proper fuel distribution and air elimination during the combustion process. Here are some pros and cons of buying this valve to help you make an informed decision:
Pros:1. Proper Air Elimination: The purge balancing valve ensures that all air is eliminated from the fuel line before fuel is delivered to the burner, preventing any potential issues related to air in the fuel system.
2. Improved Combustion Efficiency: By eliminating air from the fuel system, the combustion process is more efficient, resulting in better heating performance and potentially lower energy bills.
3. Safety: A properly functioning purge balancing valve can help prevent issues such as fuel line damage or nozzle fouling, which can lead to safety hazards like fuel leaks or fires.
4. Longer Equipment Lifespan: By ensuring that the fuel system is free from air and operating at peak efficiency, the lifespan of the heating equipment can be extended.
5. Ease of Installation: The Watts PB56 3/4 purge balancing valve is designed to be easy to install, making it a convenient choice for homeowners or contractors.
Cons:1. Cost: The Watts PB56 3/4 purge balancing valve is a specialized component, and its cost may be higher than that of a standard valve.
2. Potential for Leaks: As with any valve, there is a risk of leaks, which can lead to fuel loss and potential safety hazards. Regular maintenance and inspection are necessary to prevent leaks.
3. Need for Replacement: The Watts PB56 3/4 purge balancing valve, like any mechanical component, may eventually require replacement due to wear and tear or other issues.
Conclusion:The Watts PB56 3/4 purge balancing valve is an essential component in maintaining the efficiency and safety of fuel oil heating systems. Its advantages, such as proper air elimination, improved combustion efficiency, and safety, outweigh the potential disadvantages, such as cost and the need for replacement. Ultimately, investing in a high-quality purge balancing valve can lead to better performance, longer equipment lifespan, and peace of mind.
Recommendation:If you are in the market for a new purge balancing valve for your fuel oil heating system, consider the Watts PB56 3/4 purge balancing valve. Its proven performance, ease of installation, and long-term benefits make it a worthwhile investment for any homeowner or contractor. Ensure that you follow the manufacturer's instructions for installation and regular maintenance to ensure optimal performance and longevity.
Details:
Vintage, new old stock. 3/4 sweat inlet's. Made in the USA.
specifications maxohvac:
- brand: Watts
- mpn: Pb56
- type: Purge And Balancing Valve
- country of origin: United States
shipping maxohvac:
- service: usps ground advantage
- carrier: usps
- class: standard
- transit: 4-11 days
- type: calculated
seller maxohvac:
- city: poughkeepsie, new york
- rating: 100.0%
- # reviews: 686
returns maxohvac:
- policy: returns accepted
- time: 30 days
- paid by: seller
- method: money back
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
offer maxohvac:
- prices: $39.99–$69.88
- item condition:
- New
- New – Open box
- started: january 13, 2026
- best offers: true
- availability: in stock
- sold #: 7
- options: ship-to-home
- in stock #: 5
payments maxohvac:
- other
- credit card: discover
- wallet: apple-pay
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