--- product_id: 282147035 title: "(2 Pack) FM Approved & UL/CUL Listed TUNA Fire Sprinkler Head Horizontal Sidewall Spray 1/2” NPT 155°F (68°C) K=5.6 Side Wall Spray K80 Standard Response for Automatic Fire Sprinkler System Chrome" brand: "tuna" price: "237.50 DT" currency: TND in_stock: true category: "Tuna" url: https://www.desertcart.tn/products/282147035-2-pack-fm-approved-and-ul-cul-listed-tuna-fire store_origin: TN region: Tunisia --- # K=5.6 discharge coefficient 155°F (68°C) activation temp 1/2” NPT tapered thread (2 Pack) FM Approved & UL/CUL Listed TUNA Fire Sprinkler Head Horizontal Sidewall Spray 1/2” NPT 155°F (68°C) K=5.6 Side Wall Spray K80 Standard Response for Automatic Fire Sprinkler System Chrome **Brand:** tuna **Price:** 237.50 DT **Availability:** ✅ In Stock ## Summary > 🔥 Stay ahead of danger with precision-engineered fire defense! ## Quick Answers - **What is this?** (2 Pack) FM Approved & UL/CUL Listed TUNA Fire Sprinkler Head Horizontal Sidewall Spray 1/2” NPT 155°F (68°C) K=5.6 Side Wall Spray K80 Standard Response for Automatic Fire Sprinkler System Chrome by tuna - **How much does it cost?** 237.50 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/282147035-2-pack-fm-approved-and-ul-cul-listed-tuna-fire) ## Best For - tuna enthusiasts ## Why This Product - Trusted tuna brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Easy Installation:** Standard 1/2” NPT tapered threading fits most fire sprinkler systems seamlessly - • **Optimized Water Flow:** K=5.6 discharge coefficient ensures efficient fire suppression - • **Durable Chrome Finish:** Sleek, corrosion-resistant design for lasting performance - • **Certified Safety Assurance:** FM Approved & UL/CUL Listed for trusted, code-compliant protection - • **Precision Thermal Activation:** Triggers at a reliable 155°F (68°C) for rapid fire response ## Overview This (2 Pack) TUNA Fire Sprinkler Head features FM Approved and UL/CUL Listed certification, activating automatically at 155°F (68°C) via a frangible glass bulb. With a K-factor of 5.6 and 1/2” NPT tapered threading, it delivers reliable, uniform sidewall spray coverage under pressures up to 175 psi. Its chrome finish combines durability with sleek aesthetics, making it an essential, code-compliant component for professional fire safety systems. ## Description During a fire conditions, the thermal-sensitive liquid in the glass bulb expands, causing the bulb to shatter, releasing the button and spring seal assembly. Water flowing through the sprinkler orifice strikes the sprinkler deflector, forming a uniform spray pattern to extinguish or control the fire.Temperature Rating: 155°F (68°C)Discharge Coefficient: K=5.6(U.S) /80(Metric) Nominal Orifice Size:1/2"(15mm) Maximum Working Pressure:175psi(12bar) Min. Operating Pressure: 7psi (0.48bar) Factory Hydrostatic Test: 100%@ 500psi (34.5bar) NPT: National Pipe Tapered is common in plumbing and some industrial uses. Sometimes referred to as pipe thread because PVC pipe and schedule 40 pipe are typically threaded in NPT. As its name implies this is a tapered thread so that the outside diameter of the male (ODM) gets smaller towards the end of the fitting and the inside diameter of the female narrows with depth. As the two fittings are threaded together the opposite tapers force thread friction and makes the seal without the use of a gasket. ## Features - FM Approved 3053441and UL / CUL listed EX6430. 1/2 " NPT (National National Pipe Thread) American thread fire sprinkler heads - Underwriter Laboratories Listed, UL(United States) and ULC(Canada) Listed - Nominal 5.6 K-Factor fire sprinkler heads, Dia5mm Glass Bulb Standard Response 155F 68C - Max working pressure 175psig /1.2Mpa(12 bar);Factory Hydrostatic Test 100%@ 500psig (3.4Mpa) - Automatic fire sprinklers of the frangible bulb type ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08NYDVBQN | | Best Sellers Rank | #452,192 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1,648 in Lawn & Garden Sprinklers | | Brand Name | Tuna | | Color | Chrome | | Customer Reviews | 4.2 4.2 out of 5 stars (25) | | Inlet Connection Size | 0.5 Inches | | Item Dimensions | 1.3 x 1.3 x 1.97 inches | | Manufacturer | TUNA | | Manufacturer Part Number | NX021C2 | | Material Type | Polyvinyl Chloride | | Maximum Flow Rate | 5.6 Liters Per Minute | | Maximum Pressure | 175 Pound per Square Inch | | Model Number | NX021 | | Number of Items | 1 | | Style Name | Automatic | | UPC | 705124113369 | | Unit Count | 2.0 Count | ## Product Details - **Brand:** Tuna - **Color:** Chrome - **Item dimensions L x W x H:** 1.3 x 1.3 x 1.97 inches - **Material:** Polyvinyl Chloride - **Style:** Automatic ## Images ![(2 Pack) FM Approved & UL/CUL Listed TUNA Fire Sprinkler Head Horizontal Sidewall Spray 1/2” NPT 155°F (68°C) K=5.6 Side Wall Spray K80 Standard Response for Automatic Fire Sprinkler System Chrome - Image 1](https://m.media-amazon.com/images/I/91ceVCeatrL.jpg) ## Questions & Answers **Q: Are the ul /fm ratings legit, or is it fishy? (tuna brand lol) ... if legit, please post a link to the certifications.** A: FM certificate: Search 3053441in www.approvalguide.com after log in UL certificate: Search EX6430 in https://iq.ulprospector.com after log in **Q: Do you realize the manufacturer has acknowledged that their products are falsified fm approved?** A: I was not aware of this. I will have to address it . Surprised they are still on Amazon. ## Frequently Bought Together - (2 Pack) FM Approved & UL/CUL Listed TUNA Fire Sprinkler Head Horizontal Sidewall Spray 1/2” NPT 155°F (68°C) K=5.6 Side Wall Spray K80 Standard Response for Automatic Fire Sprinkler System Chrome - 5pc Fire Sprinkler Head & Wrench, Pendent Type 155℉ Fire Sprinkler Heads 1/2" NPT Thread 68°C Quick Response Spray Down for Home/Commericial/Workshop/Residential/Factory (Pendent Type) - 5pc Fire Sprinkler Head & Wrench, 1/2 Inch 155℉ Upright Sprinklers K80 Water Spray Up 68°C Quick Response 1/2 NPT Thread for Home/Commerical/Residential Replacement (Upright Type) --- ## 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.tn/products/282147035-2-pack-fm-approved-and-ul-cul-listed-tuna-fire](https://www.desertcart.tn/products/282147035-2-pack-fm-approved-and-ul-cul-listed-tuna-fire) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-06*