---
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: "€ 64.74"
currency: EUR
in_stock: true
reviews_count: 3
category: "Tuna"
url: https://www.desertcart.gr/products/282147035-2-pack-fm-approved-and-ul-cul-listed-tuna-fire
store_origin: GR
region: Greece
---

# K=5.6 discharge coefficient 155°F (68°C) temp rating 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:** € 64.74
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay protected 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?** € 64.74 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/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

- • **Sleek Chrome Finish:** Modern chrome design blends seamlessly with professional spaces
- • **Optimized Water Flow:** K=5.6 discharge coefficient ensures effective spray coverage
- • **Robust Pressure Handling:** Withstands up to 175 psi max working pressure for durability
- • **Certified Safety Assurance:** FM Approved & UL/CUL Listed for trusted reliability
- • **Precision Thermal Activation:** Glass bulb shatters at 155°F for rapid fire response

## Overview

This (2 Pack) TUNA Fire Sprinkler Head features FM Approval and UL/CUL Listing, ensuring top-tier safety compliance. Designed with a 155°F (68°C) glass bulb for fast thermal activation, it delivers a K=5.6 discharge coefficient through a 1/2” NPT tapered thread connection. Built to handle up to 175 psi, its chrome finish offers both durability and a sleek look, making it an essential, reliable component for automatic fire sprinkler 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.

Review: Sprinkler - Work perfect
Review: LLEGO COMPLETO - TODO MUY BIEN

## 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 | #358,726 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1,341 in Lawn & Garden Sprinklers |
| Brand | Tuna |
| Brand Name | Tuna |
| Color | Chrome |
| Customer Reviews | 4.1 out of 5 stars 25 Reviews |
| Inlet Connection Size | 0.5 Inches |
| Item Dimensions | 1.3 x 1.3 x 1.97 inches |
| Item dimensions L x W x H | 1.3 x 1.3 x 1.97 inches |
| Manufacturer | TUNA |
| Manufacturer Part Number | NX021C2 |
| Material | Polyvinyl Chloride |
| 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 | Automatic |
| 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)
![(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 2](https://m.media-amazon.com/images/I/71RV0hKkXrS.jpg)
![(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 3](https://m.media-amazon.com/images/I/51M73QceJUS.jpg)
![(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 4](https://m.media-amazon.com/images/I/71GhhqlpYIS.jpg)
![(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 5](https://m.media-amazon.com/images/I/71kzM+wz1kL.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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Sprinkler
*by J***N on March 9, 2025*

Work perfect

### ⭐⭐⭐⭐⭐ LLEGO COMPLETO
*by R***Z on September 3, 2024*

TODO MUY BIEN

### ⭐⭐⭐⭐⭐ 👍 Great
*by G***N on January 22, 2023*

Quick Ship Good product

## 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)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-05-28*