--- product_id: 312669344 title: "UL & CUL Listed 1/2\"NPT Fire Sprinkler Head 155°F (68°C) Concealed Pendent Spray K80 Standard Response for Automatic Fire sprinkler System Concealed Head with White Cover Plate" brand: "tuna" price: "฿5923" currency: THB in_stock: true reviews_count: 3 category: "Tuna" url: https://www.desertcart.co.th/products/312669344-ul-and-cul-listed-1-2npt-fire-sprinkler-head-155 store_origin: TH region: Thailand --- # K=5.6 / 80 discharge coefficient 155°F (68°C) activation temp 1/2" NPT tapered pipe thread UL & CUL Listed 1/2"NPT Fire Sprinkler Head 155°F (68°C) Concealed Pendent Spray K80 Standard Response for Automatic Fire sprinkler System Concealed Head with White Cover Plate **Brand:** tuna **Price:** ฿5923 **Availability:** ✅ In Stock ## Summary > 🔥 Stay ahead of fire risks with precision-engineered protection! ## Quick Answers - **What is this?** UL & CUL Listed 1/2"NPT Fire Sprinkler Head 155°F (68°C) Concealed Pendent Spray K80 Standard Response for Automatic Fire sprinkler System Concealed Head with White Cover Plate by tuna - **How much does it cost?** ฿5923 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/312669344-ul-and-cul-listed-1-2npt-fire-sprinkler-head-155) ## 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 - • **Tested for Safety:** Factory hydrostatic tested at 500psi for guaranteed performance under pressure. - • **Optimized Water Flow:** K=5.6 discharge coefficient ensures efficient, uniform spray coverage. - • **Robust Build Quality:** Bronze frame with brass/copper components for long-lasting durability. - • **Precision Thermal Activation:** Triggers reliably at 155°F to protect your space the moment it matters. - • **Industry-Standard Compatibility:** 1/2" NPT tapered threading fits seamlessly with common plumbing systems. ## Overview The TUNA UL & CUL Listed 1/2" NPT Fire Sprinkler Head is a concealed pendent sprinkler designed for automatic fire suppression. Rated to activate at 155°F (68°C), it features a K=5.6 discharge coefficient for optimal water distribution and a durable bronze and brass construction. Its 1/2" NPT tapered threading ensures easy integration with standard plumbing, while factory hydrostatic testing at 500psi guarantees reliability under extreme conditions. ## 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. Review: Demonstration Units Review: Worth it ## Features - UL & CUL listed EX6430. 1/2 " NPT (National National Pipe Thread) American thread fire sprinkler heads - 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) - Frame: Bronze; Button: Brass/Copper; Sealing Assembly: Beryllium Nickel w/Teflon; Bulb: Glass Compression; Screw: Bronze; Deflector: Copper ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B076NXWWXZ | | Brand | Tuna | | Brand Name | Tuna | | Color | White | | Colour | White | | Customer Reviews | 4.4 out of 5 stars 38 Reviews | | Item Dimensions | 8.4 x 8.4 x 6.2 centimeters | | Item Weight | 68 g | | Item dimensions L x W x H | 8.4 x 8.4 x 6.2 centimeters | | Manufacturer | Tuna | | Material | Metal | | Material Type | Metal | | Maximum Flow Rate | 5.6 Liters Per Minute | | Maximum Pressure | 175 Pound per Square Inch | | Maximum pressure | 175 Pound per Square Inch | | Style | Fixed Spray | | Style Name | Fixed Spray | | UPC | 717850029869 | ## Product Details - **Brand:** Tuna - **Colour:** White - **Item dimensions L x W x H:** 8.4 x 8.4 x 6.2 centimeters - **Material:** Metal - **Style:** Fixed Spray ## Images ![UL & CUL Listed 1/2"NPT Fire Sprinkler Head 155°F (68°C) Concealed Pendent Spray K80 Standard Response for Automatic Fire sprinkler System Concealed Head with White Cover Plate - Image 1](https://m.media-amazon.com/images/I/61FqK9zKUcL.jpg) ## Questions & Answers **Q: Does this work with a dry or wet system** A: This is a wet system sprinkler head as supplied. If you have a dry system you need to pull the red 'breaker' out **Q: Can this be wall mounted?** A: The product could mounted to a wall. But I would ask your inspector if they want a special sprinkler head for a wall application. **Q: what is the coverage rating for this sprinkler head?** A: Do not know I have spaced them at 8’ apart on a twelve foot curling on a pass through system. Not stand alone **Q: What are the mounting brackets for ceiling if I’m using pex** A: I used the same fitting I use for A shower then A rigid nipple to the sprinkler. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Demonstration Units *by N***I on 16 December 2019* ### ⭐⭐⭐⭐ Worth it *by R***R on 4 February 2019* ### ⭐⭐⭐⭐⭐ wery well made but did not fit my sprinkler system *by A***R on 27 March 2019* ## Frequently Bought Together - TUNA UL & CUL Listed 1/2"NPT Fire Sprinkler Head 155°F (68°C) Concealed Pendent Spray K80 Standard Response for Automatic Fire sprinkler System Concealed Head with White Cover Plate - TunaMax Universal Fire Sprinker Head wrench for 1/2" Semi-recessed or Concealed or Exposed Sprinkler Head - Happy Tree Universal Fire Sprinkler Head Wrench Fitting 1/2" Semi- Recessed or Exposed or Concealed Fire Sprinkler Heads --- ## 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.co.th/products/312669344-ul-and-cul-listed-1-2npt-fire-sprinkler-head-155](https://www.desertcart.co.th/products/312669344-ul-and-cul-listed-1-2npt-fire-sprinkler-head-155) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-29*