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Item #:
4202508
Watts 3/4" Lead-Free Brass Vacuum Relief Valve Male NPT Water Heater Tank
89% of respondents would recommend this to a friend
Item #:
4202508
SBD 417
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Order now and get it around Thursday, October 08
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The LFN36-M1 vacuum relief valve prevents vacuum conditions that could siphon water from your system and protect your water heater or tank!
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What Stands Out
Low Profile Design
The Watts LFN36-M1 features a compact design that fits into tight spaces, making it ideal for installation in limited areas, especially in water and heater tank setups.
Effective Relief
This vacuum relief valve provides efficient protection against vacuum conditions in water systems, preventing damage and ensuring smooth operation, setting it apart from standard valves.
Durable Construction
Constructed with high-quality materials, the Watts valve ensures long-lasting performance and reliability, delivering exceptional value and peace of mind to users concerned about durability.
Product Details
| Brand Name | Watts |
| Model Number | Watts LFN36-M1 |
| Global Trade Identification Number | 00098268450415 |
| Item Highlight | CSA Certified 250F Max 200 Psi Maximum Protective Cap Prevents Siphoning Suits Water Heaters and Steam Systems |
| Manufacturer | Watts |
| Number of Items | 1 |
| UPC | 098268450415 |
| Item Type Name | Vacuum Relief Valve for Water and Heater Tanks |
| Item Weight | 4 ounces (113.4 grams) |
| Number of Pieces | 1 |
| Manufacturer Part Number | 556031 |
| Material Type | Brass |
| Exterior Finish | Brass |
| Inlet Connection Type | National Pipe Tapered |
| Outlet Connection Type | MNPT |
| Maximum Pressure | 200 psi |
| Number of Ports | 2 |
| Thread Size | 3/4-16 UNF |
| Thread Type | UNF |
| Connector Type | Threaded |
| Valve Type | Vacuum Relief Valve |
| Item Dimensions | 1 x 1 x 1 inches (2.5 x 2.5 x 2.5 cm) |
| Inlet Connection Size | 0.75 inches |
| Outlet Connection Size | 0.75 inches |
| Size | 3/4 Inch |
| Specification Met | CSA, ANSI Z21.22 |
| Material | Brass |
| Brand | Watts |
| Item dimensions L x W x H | 1 x 1 x 1 inches (2.5 x 2.5 x 2.5 cm) |
| Maximum Operating Pressure | 200 psi |
Who Should Buy?
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Residential Users
Ideal for homeowners needing reliable vacuum relief in water and heater tanks to prevent damage and ensure safety.
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Small Businesses
Beneficial for small establishments with water heaters in need of efficient vacuum management to maintain operational integrity.
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DIY Enthusiasts
Great choice for hobbyists looking to easily install a vacuum relief valve in home plumbing systems.
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Large Industrial
May not suit larger scale operations requiring robust vacuum management beyond the product's specified capabilities.
Product Description
Watts 3/4" Lead-Free Brass Vacuum Relief Valve Male NPT Water Heater Tank
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is the Watts 3/4LFN36-M2?
Answer: The Watts 3/4LFN36-M2 is a lead-free brass ball valve designed for efficient flow control in various plumbing applications. This valve is ideal for use in residential, commercial, and industrial settings. Engineered for durability, the lead-free construction ensures safe drinking water use, making it perfect for potable water systems and HVAC applications. -
Question:
What are the specifications of the Watts 3/4LFN36-M2?
Answer: The Watts 3/4LFN36-M2 features a 3/4 inch size and is constructed from high-quality lead-free brass. It includes a full-port design that allows for maximum flow without restrictions, providing efficient control. The valve boasts robust handles for easy operation and an exceptional sealing mechanism to prevent leaks, ensuring reliability in various applications. -
Question:
Can I use the Watts 3/4LFN36-M2 for hot water applications?
Answer: Yes, the Watts 3/4LFN36-M2 is suitable for both hot and cold water applications. Its brass construction and robust design enable it to withstand high temperature ranges typically found in plumbing systems. This makes it an excellent option for heating systems, water heaters, and other situations where hot water control is necessary. -
Question:
Is the Watts 3/4LFN36-M2 easy to install?
Answer: The Watts 3/4LFN36-M2 is designed for straightforward installation. It features threaded connections, which allow for compatibility with standard pipes, facilitating a hassle-free setup for both DIY enthusiasts and professional plumbers. Proper installation ensures optimal performance and helps maintain the longevity of your plumbing system. -
Question:
What materials are used in the construction of the Watts 3/4LFN36-M2?
Answer: The construction of the Watts 3/4LFN36-M2 primarily utilizes lead-free brass, making it a safe choice for drinking water applications. Lead-free materials not only meet health standards but also provide longevity and resistance to corrosion. These qualities ensure that the valve will perform effectively over time, minimizing the need for replacements. -
Question:
Where can I buy the Watts 3/4LFN36-M2?
Answer: You can purchase the Watts 3/4LFN36-M2 at Ubuy in Solomon Islands. Ubuy provides a convenient online shopping platform that features a wide selection of plumbing supplies, including this specific valve. You’ll find various options and can compare other products to ensure you make the best choice for your plumbing needs. -
Question:
What applications is the Watts 3/4LFN36-M2 best suited for?
Answer: The Watts 3/4LFN36-M2 is ideal for residential, commercial, and industrial plumbing applications. Common uses include water supply lines, irrigation systems, and HVAC installations where reliable and efficient flow control is necessary. Its robust design makes it suitable for both indoor and outdoor settings. -
Question:
Does the Watts 3/4LFN36-M2 require any special maintenance?
Answer: The Watts 3/4LFN36-M2 requires minimal maintenance to ensure efficient operation. Regularly inspecting the valve for leaks or signs of wear can help maintain its performance. If any mechanical issues arise, it’s essential to address them promptly to prevent damage to your plumbing system. -
Question:
What factors should I consider when choosing a valve like the Watts 3/4LFN36-M2?
Answer: When selecting a valve such as the Watts 3/4LFN36-M2, consider factors such as the application type, the pressure and temperature of the fluids involved, and compatibility with existing plumbing systems. Additionally, evaluate the valve material for safety—lead-free options are better for drinking water. Selecting the right valve ensures optimal efficiency and safety. -
Question:
What makes the Watts 3/4LFN36-M2 an eco-friendly option?
Answer: The Watts 3/4LFN36-M2 is classified as a lead-free product, making it an eco-friendly choice for plumbing applications. It supports safe water supply without compromising quality and ensures that there are no harmful contaminants. Choosing lead-free materials promotes a healthier environment and complies with modern plumbing standards.
Watts Water Heater Parts Watts LFN36-M1 Editorial Review
The Watts 3/4LFN36-M2 0556031 low-profile vacuum relief valve has garnered positive reception from customers who appreciate its efficiency and reliability in water heater systems. Users have highlighted the ease of installation, noting that it fits perfectly as described and requires only a simple screw-in process. The compact design is particularly lauded for allowing installation in tight spaces without hindering other components. Many reviews emphasize peace of mind regarding its solid performance, with customers reporting no leaks or issues once installed. The product is deemed a crucial upgrade for any tank system, ensuring the proper management of pressure and the prevention of vacuum issues. Furthermore, some customers have taken the initiative to purchase spares, underscoring its importance as a reliable component that might need replacement down the line due to wear. This indicates a positive long-term outlook for the product, as it inspires trust over cheaper alternatives. Additionally, the availability of this valve has been a relief for those who struggled to find it in local plumbing supply stores, illustrating the convenience of sourcing such specialized items online. **
Customer Reviews & Ratings
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Pros
- Easy installation with a simple screw-in process.
- Compact, low-profile design suitable for tight spaces.
- Solid performance with no leaks reported.
- Provides peace of mind and effective pressure management.
- Sought after as a reliable upgrade for tank systems.
Cons
- Availability may be an issue in local hardware stores.
Platform Trust & Buyer Confidence
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Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
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Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
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Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
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Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
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Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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SBD 417
Order now and get it around Thursday, October 08
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Features & Benefits
- Automatically allows air into the piping system to prevent vacuum conditions.
- Ideal for domestic water heaters, supply tanks, and low-pressure steam systems.
- Lead-free brass body with a low profile design and protective cap.
- Tested and rated to ANSI Z21.22 and CSA certified.
- Maximum working pressure of 200psi and maximum temperature of 250 degrees.
- Essential for safeguarding your water heating equipment from damage.
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