--- product_id: 36195682 title: "Automatic Air Vent Valve, 3/4 In, Brass" brand: "watts" price: "3077164β‚«" currency: VND in_stock: true reviews_count: 2 category: "Watts" url: https://www.desertcart.vn/products/36195682-automatic-air-vent-valve-3-4-in-brass store_origin: VN region: Vietnam --- # 240Β°F max temperature 150 PSI max pressure Durable brass construction Automatic Air Vent Valve, 3/4 In, Brass **Brand:** watts **Price:** 3077164β‚« **Availability:** βœ… In Stock ## Summary > πŸ”₯ Elevate your system’s efficiency with brass precision! βš™οΈ ## Quick Answers - **What is this?** Automatic Air Vent Valve, 3/4 In, Brass by watts - **How much does it cost?** 3077164β‚« with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/36195682-automatic-air-vent-valve-3-4-in-brass) ## Best For - watts enthusiasts ## Why This Product - Trusted watts brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Precision Brass Build:** Crafted from premium brass for long-lasting corrosion resistance - β€’ **Heat-Resistant Durability:** Operates flawlessly at temperatures up to 240Β°F - β€’ **Compact & Efficient Design:** Sleek 3-3/8" height fits seamlessly into tight spaces - β€’ **Pressure-Ready Performance:** Handles up to 150 PSI for reliable system safety - β€’ **Trusted Italian Engineering:** Manufactured by Watts, a leader in control valve innovation ## Overview The Watts Automatic Air Vent Valve is a compact, brass float valve engineered for high performance in plumbing systems. Rated for up to 150 PSI and 240Β°F, it ensures automatic air release to maintain system efficiency and longevity. With a 3/4" inlet and durable construction, this valve is a trusted choice for professionals seeking reliable, precision-engineered components. ## Description ' Automatic Air Vent Valve, Max. Working Pressure (PSI) 150, 3/4 In. InletHeight (In.) 3-3/8, Width (In.) 1-1/4, Brass, Max. Temp. (F) 240 Degrees ' Review: Good valve. - Fast delivery. Valve worked properly for my application. Would buy it again. Review: The seller delivered exactly what I ordered ## Features - Price For: Each Material of Construction: Brass Max. Temp. (F): 240 Degrees Height (In.): 3-3/8 Width (In.): 1-1/4 Item: Automatic Air Vent Valve Inlet: 3/4" Max. Working Pressure (PSI): 150 Country of Origin (subject to change): Italy ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01LXBGHG2 | | Best Sellers Rank | #691,906 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #583 in Control Valves | | Brand Name | Watts | | Customer Reviews | 4.3 4.3 out of 5 stars (20) | | Exterior Finish | Brass | | Inlet Connection Type | National Pipe Tapered | | Manufacturer | WATTS | | Material Type | Brass | | Maximum Pressure | 150 Pound per Square Inch | | Model Number | FV-4M1- 3/4 | | Number of Ports | 2 | | Outlet Connection Type | MNPT | | Size | 3-3/8" H x 1-1/4" W | | Specification Met | ASME B16.34, ASTM, MSS SP 72 | | Unit Count | 1.0 Count | | Valve Type | Float Valve | ## Product Details - **Brand:** Watts - **Exterior Finish:** Brass - **Inlet Connection Type:** National Pipe Tapered - **Manufacturer:** WATTS - **Material:** Brass - **Maximum Operating Pressure:** 150 Pound per Square Inch - **Number of Ports:** 2 - **Outlet Connection Type:** MNPT - **Specification Met:** ASME B16.34, ASTM, MSS SP 72 ## Images ![Automatic Air Vent Valve, 3/4 In, Brass - Image 1](https://m.media-amazon.com/images/I/71dG72h6cTL.jpg) ## Questions & Answers **Q: The air vent valve i need has an od of the threads at the bottom of 5/8" is this the correct item?** A: You need a 1/2" up, because pipe size is inside so the out side is 5/8" **Q: The vent on top, looks like 1-16 inch. are the threads npt or bst or what?** A: The cap is for protection. It appears to be the same thread as found on a tire valve stem. The cap appears to be the same as a tire valve cap. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good valve. *by R***H on September 20, 2021* Fast delivery. Valve worked properly for my application. Would buy it again. ### ⭐⭐⭐⭐⭐ Review *by R***D on August 22, 2022* The seller delivered exactly what I ordered ## Frequently Bought Together - Automatic Air Vent Valve, 3/4 In, Brass - Flexcon Industries PH5 FLEX2PRO Thermal Expansion Tank - 2.1 Gallon - Caleffi 502015A High Capacity Automatic Air Vent 1/8-Inch NPT Male --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/36195682-automatic-air-vent-valve-3-4-in-brass](https://www.desertcart.vn/products/36195682-automatic-air-vent-valve-3-4-in-brass) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-25*