--- product_id: 206534617 title: "Twinkle Star 3/4 Inch IPS Isolator Tankless Water Heater Service Valve Kit, with Pressure Relief Valve, Clean Brass Construction" brand: "twinkle star" price: "485519β‚«" currency: VND in_stock: true reviews_count: 8 url: https://www.desertcart.vn/products/206534617-twinkle-star-3-4-inch-ips-isolator-tankless-water-heater store_origin: VN region: Vietnam --- # Integrated drain valve with brass safety cap 3/4 inch full port ball valve for max flow Lead-free heavy-duty brass, leak-proof design Twinkle Star 3/4 Inch IPS Isolator Tankless Water Heater Service Valve Kit, with Pressure Relief Valve, Clean Brass Construction **Brand:** twinkle star **Price:** 485519β‚« **Availability:** βœ… In Stock ## Summary > πŸ’§ Keep your hot water flowing flawlessly with Twinkle Star’s leak-proof isolation kit! ## Quick Answers - **What is this?** Twinkle Star 3/4 Inch IPS Isolator Tankless Water Heater Service Valve Kit, with Pressure Relief Valve, Clean Brass Construction by twinkle star - **How much does it cost?** 485519β‚« 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/206534617-twinkle-star-3-4-inch-ips-isolator-tankless-water-heater) ## Best For - twinkle star enthusiasts ## Why This Product - Trusted twinkle star brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Built to Last:** Crafted from lead-free, heavy-duty brass for unmatched durability and leak prevention. - β€’ **Effortless Maintenance:** Integrated drain valve with brass safety cap simplifies flushing and upkeep. - β€’ **Precision Flow Control:** Full port ball valve ensures superior water flow and easy isolation during maintenance. - β€’ **Universal Compatibility:** Fits all 3/4 inch tankless water heaters from top brands like Rinnai, Rheem, and Navien. - β€’ **Certified Safety & Compliance:** CSA and federal/state lead-free certifications guarantee safe, reliable performance. ## Overview The Twinkle Star 3/4 Inch IPS Isolator Tankless Water Heater Service Valve Kit features a full port ball valve and integrated drain valve, all constructed from lead-free heavy-duty brass. Certified for safety and compatibility, it fits most U.S. residential and commercial tankless water heaters, ensuring easy maintenance and reliable leak-free operation. ## Description Twinkle Star 3/4 Inch IPS Isolator Tankless Water Heater Service Valve Kit, with Pressure Relief Valve, Clean Brass Construction - desertcart.com Review: Easy install and great price. A must have for tankless water heaters! - The isolation valve kit is absolutely necessary in order to properly flush the unit of scale and buildup on an annual basis. I purchased a home that was retrofitted with a tankless water heater. The installation was horrendous with the hot water supply installed on the right side and cold water on left, the TPR located in the wrong place and was unable to be tested because of its location, exposed electrical conductors that had brittle and failing insulation from UV damage and no isolation valves or hookups to properly flush the unit. The Twinkle Star valve kit solved this issue and appears to be of very good quality and works flawlessly. Review: Great kit - Great kit for installing your tankless water heater. Most require a certain amount of metal pipe prior to your cpvc or pex. These passed code in delaware. These have the threading & valves for descaling to keep your water heater running efficiently. ## Features - Twinkle Star 3/4 Inch Isolation Kit involves hot and cold valves 500WOG with 1/4 red and blue handles for easy identification and use. Integrated drain valve with brass safety cap for easily maintenance. Equipped with full port ball valve for better flow rate. - Superior Integrated Design: This complete kit made from lead free heavy duty brass for years of usage. One-piece forged brass body effectively prevents any leakage or dripping. The main isolation valve set is factory tested to be leak-free so that your heater can be maintained periodically during each flushing sequence. - Certification: The components are certified lead free. You will also find CSA certifications on the water flex and the gas flex as a proof of their authenticity. Meets all federal & state standards for lead levels in drinking water system components. - Widely Use: The tankless kit works with all 3/4 inch size is suitable for most U.S. residential usage, both residential and commercial gas tankless water heater brand such as Noritz, Rinnai, Rheem, Takagi, Navien and so on. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B085Q8DL8B | | Best Sellers Rank | #545,245 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,368 in Water Heater Replacement Parts | | Brand Name | Twinkle Star | | Color | Blue/Red | | Customer Reviews | 4.6 4.6 out of 5 stars (894) | | Heat Output | 500 Watts | | Is Electric | No | | Item Dimensions W x H | 7.2"W x 4"H | | Item Weight | 1.83 Kilograms | | Manufacturer | Twinkle Star | | Material Type | Brass | | Model Number | 49215648563517 | | Mount Type | Wall | | Power Source | Gas Powered | | Style Name | Indoor Installation | | Unit Count | 1.0 Count | | Wattage | 500 watts | ## Product Details - **Brand:** Twinkle Star - **Color:** Blue/Red - **Power Source:** Gas Powered - **Product Dimensions:** 7.2"W x 4"H - **Wattage:** 500 watts ## Images ![Twinkle Star 3/4 Inch IPS Isolator Tankless Water Heater Service Valve Kit, with Pressure Relief Valve, Clean Brass Construction - Image 1](https://m.media-amazon.com/images/I/91MZb-l7aFL.jpg) ![Twinkle Star 3/4 Inch IPS Isolator Tankless Water Heater Service Valve Kit, with Pressure Relief Valve, Clean Brass Construction - Image 2](https://m.media-amazon.com/images/I/81uSM7GEIHL.jpg) ![Twinkle Star 3/4 Inch IPS Isolator Tankless Water Heater Service Valve Kit, with Pressure Relief Valve, Clean Brass Construction - Image 3](https://m.media-amazon.com/images/I/81SBFJdkOJL.jpg) ![Twinkle Star 3/4 Inch IPS Isolator Tankless Water Heater Service Valve Kit, with Pressure Relief Valve, Clean Brass Construction - Image 4](https://m.media-amazon.com/images/I/81lYTwCtM7L.jpg) ![Twinkle Star 3/4 Inch IPS Isolator Tankless Water Heater Service Valve Kit, with Pressure Relief Valve, Clean Brass Construction - Image 5](https://m.media-amazon.com/images/I/81hcykTdp5L.jpg) ## Questions & Answers **Q: Whats the electrical conduit knockout size? I assume 1"?** A: You are asking the wrong question. These are WATER plumbing fixtures NOT electrical, so the sizing isn't in the same ballpark. As I recall, the hex on the valves is about 1 1/8" (they are really metric). I used a 16 inch "Crescent" wrench and an 18" pipe wrench on them. Sorry, best I can do for an answer... **Q: What does this mean?: 1/4 red and blue handles for easy identification and use. 1/4" as in the ball valve shaft diameter?** A: Red is for the hot water side and blue is for the cold (city)water side. 1/4" is the size of the actual shaft (stem) diameters, which is a good quality valve. At the local "big box" store, these valves will run close to $75. At a plumbing supply, close to $100. They may or may not be made in the USA and you might need some DIN thread adapters at about $15 each as most tankless hot water heaters have European pipe fittings-OK? **Q: What for do i need presure relief valve? there is no preassure in tankless water heater, right?** A: Some building codes require pressure relief valves for tankless water heaters, including statewide codes in Massachusetts and Kentucky. Rheem's installation instructions suggest that they are not required to meet UL Standard 499, but they do also recommend them when connecting to Flex or Hi-Temp CPVC for added safety. You should verify with your water heater's manufacturer and with local building codes. Or just put the thing on and be done with it, since it's near impossible to find a service valve kit that doesn't come with a relief valve. **Q: where are these made** A: There is no mention of the country of origin on the box or cast into the product. What I can say is that the casting and finish appear to be of the highest quality, and I would have no reservations about recommending these isolation valves to anyone. My personal opinion is that this a top quality product. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy install and great price. A must have for tankless water heaters! *by F***N on February 6, 2023* The isolation valve kit is absolutely necessary in order to properly flush the unit of scale and buildup on an annual basis. I purchased a home that was retrofitted with a tankless water heater. The installation was horrendous with the hot water supply installed on the right side and cold water on left, the TPR located in the wrong place and was unable to be tested because of its location, exposed electrical conductors that had brittle and failing insulation from UV damage and no isolation valves or hookups to properly flush the unit. The Twinkle Star valve kit solved this issue and appears to be of very good quality and works flawlessly. ### ⭐⭐⭐⭐⭐ Great kit *by B***N on May 28, 2025* Great kit for installing your tankless water heater. Most require a certain amount of metal pipe prior to your cpvc or pex. These passed code in delaware. These have the threading & valves for descaling to keep your water heater running efficiently. ### ⭐⭐⭐⭐⭐ Great quality *by M***R on June 19, 2025* Why did you pick this product vs others?: We left the product!!!! Great quality affordable price --- ## 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/206534617-twinkle-star-3-4-inch-ips-isolator-tankless-water-heater](https://www.desertcart.vn/products/206534617-twinkle-star-3-4-inch-ips-isolator-tankless-water-heater) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-20*