Tips When Replacing Fire Sprinkler Systems

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Finding the right fire sprinkler replacement is challenging.

Do you have a 1/2″ or 3/4″ fire sprinkler? Is it standard response or quick response?

Knowing the answers can make all the difference when ordering replacement fire sprinklers.
Helpful Fire Sprinkler Replacement Tips
Tip 1: A qualified professional should replace fire sprinklers or in any other way modify a fire sprinkler system. If you do not know a trusted sprinkler contractor, contact us by email or phone. We’ll point you in the right direction.
Tip 2: A fire sprinkler’s size describes the inner orifice diameter – either half inch (1/2″), three-quarter inch (3/4″), or in some very rare cases one inch (1″). If you measure the outside diameter of a half inch (1/2″) sprinkler’s threads it will equal close to three-quarter inch. The outside diameter of a  three-quarter inch (3/4″) sprinkler is almost one inch.
When ordering replacements, if the outside diameter of the your sprinkler’s thread is (3/4″) three quarter inch you should request a (1/2″) half inch sprinkler.
Fire Sprinkler Size Comparison
On a side note, in our experience nine times out of ten you need a (1/2″) half-inch sprinkler.
Tip 3: Try always to match the sprinkler’s response type to the one you’re replacing. Replace quick response fire sprinklers with quick response fire sprinklers. Replace standard response fire sprinklers with standard response fire sprinklers unless, in some approved cases, it is recommended to replace with quick response fire sprinklers. Always, equal or better.
There are two ways to tell a sprinkler’s response type. You can either find the letters SR (for standard response) or QR (for quick response) stamped on the body of the sprinkler, usually on the deflector (top of an upright, bottom of a pendent).
An alternative is to look at the thickness of the bulb. A 5 mm bulb is standard response while the smaller 3 mm is it’s peppy quick response cousin.
Can you tell the difference?
Standard Response vs Quick Response
Tip 4: Spare fire sprinkler heads and a wrench should be stored in an impact resistant sprinkler head cabinet and remain accessible at all times in a facility with a fire sprinkler system installed. State regulations often apply in this matter. Check with your local fire department.
And for the most important safety reminder and sprinkler replacement tip all wrapped into one…
Tip 5: Fire sprinkler systems should be visually inspected often and professionally inspected annually. This is applicable to your home or office. It is ALWAYS better safe than sorry.
Ordering replacement fire sprinklers has never been easier! At Thorpe Design, we offer commercial and residential fire sprinkler replacements online 24/7!
If you have any questions, our knowledgeable customer service staff coupled with over 30 years of industry experience is here to help. Contact us by email or phone at (877) 977-FIRE.
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