
0556030 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $28.82 | Condition is New – Open box, WATTS 0556030 1/2 inch lead free vacuum relief valve, shipping cost = $6.07 | 99.3% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $47.51 | Condition is New, N36 1/2" VacuumRelfVlv WtrSrvc Watts 0556030 N36 1/2" VacuumRelfVlv WtrSrvc, FREE SHIPPING | 98.6% |
![]() | $58.37 | Top Pick! Condition is New, Watts 0556030 Series LFN36 1/2 in. Brass Vacuum Relief Valve 15 psi, FREE SHIPPING | ![]() |
![]() | $66.19 | Condition is New, Watts 286523 Regulator 0556030 LEAD FREE 1/2 IPS VACUUM RELIEF VALVE 200 PSI WAT, FREE SHIPPING | 98.6% |

The Watts 0556030 1/2 Lead Vacuum Relief Valve is a crucial component in maintaining the proper functioning of vacuum systems, particularly in water heating applications. This relief valve is designed to automatically open when the vacuum pressure exceeds a specific level, releasing any excess air and preventing damage to the system.
The valve body is made of brass, a durable material known for its resistance to corrosion and its ability to withstand high temperatures. The valve features a 1/2 inch NPT thread connection, making it compatible with a wide range of vacuum systems. The valve also comes with a 1/2 inch lead connection, facilitating easy installation and connection to the system.
The Watts 0556030 Vacuum Relief Valve operates using a diaphragm mechanism. The diaphragm is made of an elastomer material, providing flexibility and reliability in responding to changes in vacuum pressure. The valve is also equipped with a spring-loaded mechanism, ensuring that the valve closes tightly and maintains a secure seal when the vacuum pressure returns to normal levels.
This vacuum relief valve is designed to provide reliable and consistent performance, even in demanding applications. It is suitable for use in water heating systems, where maintaining a proper vacuum level is critical to ensuring efficient and effective system operation. The valve is also easy to install, requiring no special tools or extensive plumbing knowledge.
In summary, the Watts 0556030 1/2 Lead Vacuum Relief Valve is a high-quality and reliable solution for maintaining the vacuum level in water heating and other vacuum systems. Its durable brass construction, flexible diaphragm mechanism, and easy installation make it an excellent choice for both residential and commercial applications.
The 0.556030 1/2 lead vacuum relief valve is a component used in vacuum systems to prevent the vacuum from collapsing when the pump is off or not performing optimally. Here are some pros and cons of buying this particular model:
Pros:1. Durable: The valve is made of lead, which is known for its strength and resistance to corrosion.
2. Easy to Install: It is a simple component to install, and most plumbers or DIY enthusiasts should be able to do it with ease.
3. Effective: The valve is designed to release vacuum when the pressure drops, preventing damage to the system.
Cons:1. Lead Content: Lead can be toxic, and there are concerns about the potential health risks associated with its use. However, it is important to note that the valve is designed to be installed in a system that is not in contact with drinking water.
2. Weight: Lead is a heavy material, and the valve may be more difficult to handle than valves made of lighter materials.
3. Cost: Lead valves tend to be more expensive than valves made of other materials.
Ending Conclusion:The 0.556030 1/2 lead vacuum relief valve is a reliable and effective component for vacuum systems. Its durability and resistance to corrosion make it a good choice for industrial applications. However, its lead content and higher cost are potential drawbacks. Ultimately, the decision to buy this valve depends on the specific requirements of your vacuum system and your budget.
Recommendation:If you are looking for a reliable and effective vacuum relief valve, the 0.556030 1/2 lead vacuum relief valve is a good choice. However, if you are concerned about the use of lead or the higher cost, you may want to consider alternative materials such as brass or plastic. Make sure to consult with a professional if you have any doubts about the suitability of this valve for your specific application.
Details:
Lead free construction low profile maximum temperature 250 degrees steam pressure 15 psi. watts 0556030. This valve automatically allows air to enter into the piping system t. This 1/2 inch lead free vacuum relief valve is suitable for low pressure steam and water service, ideal use in domestic heaters supply tanks.
Body material lead free brass inlet connection size 1/2 maximum temperature 250 f working pressure 15 psi.
specifications maxohvac:
- brand: Watts
- mpn: 0556030
- part type: Vacuum Valve
returns maxohvac:
- time: 30 days
- policy: returns accepted
- paid by: buyer
- method: money back
offer maxohvac:
- started: july 22, 2025
- prices: $28.82–$66.19
- item condition:
- New – Open box
- New
- in stock #: 4
- availability: in stock
- sold #: 16
- options: ship-to-home
seller maxohvac:
- city: levittown, new york
- rating: 92.6%
- # reviews: 2893
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
payments maxohvac:
- other
- credit card: visa
- wallet: apple-pay
shipping maxohvac:
- carrier: usps
- class: standard
- type: calculated
- service: usps ground advantage
- transit: 3-8 days
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