--- product_id: 557110724 title: "Safety Relief Valve With 3/4 Inch Thread 30 PSI ASME Hot Water (30 PSI)" brand: "hydro master" price: "€ 41.12" currency: EUR in_stock: true reviews_count: 13 category: "Hydro Master" url: https://www.desertcart.fr/products/557110724-safety-relief-valve-with-3-4-inch-thread-30-psi store_origin: FR region: France --- # 3/4" NPT threaded inlet Brass body & stainless spring 30 PSI pressure relief Safety Relief Valve With 3/4 Inch Thread 30 PSI ASME Hot Water (30 PSI) **Brand:** hydro master **Price:** € 41.12 **Availability:** ✅ In Stock ## Summary > 🛠️ Master your water system with HYDRO MASTER – pressure relief made effortless! ## Quick Answers - **What is this?** Safety Relief Valve With 3/4 Inch Thread 30 PSI ASME Hot Water (30 PSI) by hydro master - **How much does it cost?** € 41.12 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/557110724-safety-relief-valve-with-3-4-inch-thread-30-psi) ## Best For - hydro master enthusiasts ## Why This Product - Trusted hydro master brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted by Pros:** Plumber-recommended design backed by 50+ years of industry insight. - • **Compact & Efficient:** Lightweight 0.45 lb valve with a sleek 3.2 x 1.6 x 1.8 inch profile fits most residential setups. - • **Durable Corrosion Resistance:** All-brass body paired with stainless steel spring guarantees long-lasting performance. - • **Universal Fit & Fast Install:** Standard 3/4" NPT threading ensures seamless compatibility and quick setup in minutes. - • **Precision Pressure Protection:** Reliable 30 PSI relief safeguards your system from overpressure risks. ## Overview The HYDRO MASTER Safety Relief Valve features a 3/4 inch NPT threaded inlet and outlet, designed to release pressure at 30 PSI to protect residential hot water systems. Constructed with a durable brass body and stainless steel spring, it offers corrosion resistance and reliable performance. Easy to install and plumber-recommended, this valve fits most U.S. residential applications, ensuring safety and peace of mind. ## Description desertcart.com: HYDRO MASTER Safety Relief Valve With 3/4 Inch Thread 30 PSI ASME Hot Water (30 PSI) : Industrial & Scientific Review: Good valve and value - Accurate relief when the system is over pressure. Easy installation. Quality valve. Review: Plumber recommended.. - So when my boiler system started leaking out of this particular valve, I was of course in the market for a new one. I never knew there were so many different manufacturers of the same item to choose from. Holy crap. On the bright side however my father-in-law has been a plumber for about 50 years and after a quick phone call in his direction I narrowed my search down to well, this one. The only thing he cautioned me on was to look at the old one before you replace it and make sure the new one has the same markings PSI etc etc, and other than that it's pretty easy. Shut off the water supply, relieve the pressure, unscrew the old one and with the use of a little bit of thread tape, screw this one on and snug it down. The whole repair took me about 4 minutes. ## Features - 3/4" male NPT threaded inlet for connecting to a female NPT threaded connection. - ALL brass body and stainless steel spring for corrosion resistance. - Designed for protection against excessive pressure only - Universal 3/4" size is suitable for most U.S. residential usage. - Easy and fast installation. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CCJ7QZQ7 | | Best Sellers Rank | #13,109 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #4 in Relief Valves | | Brand | HYDRO MASTER | | Brand Name | HYDRO MASTER | | Customer Reviews | 4.4 out of 5 stars 88 Reviews | | Exterior Finish | Brass , Stainless Steel | | Included Components | Relief Valve | | Inlet Connection Size | 3/4 Inches | | Inlet Connection Type | National Pipe Tapered | | Item Dimensions | 3.2 x 1.6 x 1.8 inches | | Item Type Name | Relief Valve | | Item Weight | 0.45 Pounds | | Item dimensions L x W x H | 3.2 x 1.6 x 1.8 inches | | Manufacturer | HYDRO MASTER | | Manufacturer Part Number | 0571101 | | Material | Brass | | Material Type | Brass | | Maximum Pressure | 30 Pound per Square Inch | | Model Number | 0571101 | | Number of Ports | 2 | | Outlet Connection Size | 3/4 Inches | | Outlet Connection Type | NPT Thread | | Size | 3/4 inches | | Smart Home Compatibility | Not Smart Home Compatible | | Specification Met | CSA | | Thread Size | 3/4 inches | | Thread Type | NPT | | Unit Count | 1.0 Count | | Valve Type | Pressure Relief Valve | ## Product Details - **Brand:** HYDRO MASTER - **Exterior Finish:** Brass, Stainless Steel - **Inlet Connection Size:** 3/4 Inches - **Inlet Connection Type:** National Pipe Tapered - **Item dimensions L x W x H:** 3.2 x 1.6 x 1.8 inches - **Material:** Brass - **Maximum Operating Pressure:** 30 Pound per Square Inch - **Number of Ports:** 2 - **Outlet Connection Size:** 3/4 Inches - **Outlet Connection Type:** NPT Thread ## Images ![Safety Relief Valve With 3/4 Inch Thread 30 PSI ASME Hot Water (30 PSI) - Image 1](https://m.media-amazon.com/images/I/61yQEgmVl8L.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good valve and value *by J***N on March 29, 2026* Accurate relief when the system is over pressure. Easy installation. Quality valve. ### ⭐⭐⭐⭐⭐ Plumber recommended.. *by W***N on August 28, 2025* So when my boiler system started leaking out of this particular valve, I was of course in the market for a new one. I never knew there were so many different manufacturers of the same item to choose from. Holy crap. On the bright side however my father-in-law has been a plumber for about 50 years and after a quick phone call in his direction I narrowed my search down to well, this one. The only thing he cautioned me on was to look at the old one before you replace it and make sure the new one has the same markings PSI etc etc, and other than that it's pretty easy. Shut off the water supply, relieve the pressure, unscrew the old one and with the use of a little bit of thread tape, screw this one on and snug it down. The whole repair took me about 4 minutes. ### ⭐⭐⭐⭐⭐ Good part fast delivery *by M***A on January 17, 2026* Good quality fit well. Arrived timely. Thanks ## Frequently Bought Together - HYDRO MASTER Safety Relief Valve With 3/4 Inch Thread 30 PSI ASME Hot Water (30 PSI) - Hydro Master Automatic Air Vent Valve 1/8 Inch Brass - Watts 0342691 30 PSI Pressure Relief Valve, Bronze, 3/4" 335 M2-030 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.fr/products/557110724-safety-relief-valve-with-3-4-inch-thread-30-psi](https://www.desertcart.fr/products/557110724-safety-relief-valve-with-3-4-inch-thread-30-psi) --- *Product available on Desertcart France* *Store origin: FR* *Last updated: 2026-07-16*