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#74 -- Where to Find Central Sprinkler Company Model A Replacement Fire Sprinkler Cover Plates

Posted by Jason Hugo and Anna Hartenbach on 9/14/2017 to Fire Sprinkler Cover Plates
If you’ve landed here, odds are you Central Sprinkler Company (CSC) Model A Royal Flush Concealed fire sprinklers and need to find replacement cover plates. 

No, I’m not a mind reader – just a good detective! 

Each week, we receive dozens of calls from frantic buyers in need of this product. If you’re one of them, this blog will give you all the information you need!

In this article, we’ll show you what makes the Model A cover plate so unique. Furthermore, we’ll explain why they’re so rare and help you explore the available options. If you already know what you’re looking for, feel free to jump on over and check out our Tyco CSC Model A compatible cover plate.

Otherwise, let’s see what makes these cover plates so scarce.

Tyco Acquires Central Sprinkler Company

In the late 1990’s, Central Sprinkler Company found itself in financial trouble following a legal battle surrounding the Omega sprinkler. CSC discovered that the performance of the Omega Sprinkler, which featured an O-ring seal, was compromised over time by corrosion, minerals, salts, and other contaminants that could cause them to fail during an emergency. Following legal settlements and the recall of nearly 8.4 million Omega sprinklers, they were in dire need of capital. 

Tyco International acquired Central Sprinkler Company in 1999, providing the solution the company needed at that time. Tyco is, and was at that time, one of the world’s largest manufacturers and installers of fire protection systems. 

For those with Central Sprinkler Company fire sprinklers and cover plates, this acquisition made it more difficult to find replacement parts. Tyco discontinued manufacturing the CSC Model A Royal Flush Concealed Sprinkler – and the corresponding Cover Plate - in 2002. 

Cover Plate for the Royal Flush Central Sprinkler Heads – Why You Can’t Use Just Any Cover Plate

The main reason you can’t use just any cover plate for the CSC Model A Royal Flush Sprinkler Heads is the orifice size. In this case, size does matter!

As you can see, in comparison to the Tyco RFII – the successor model Tyco offers today - the differences are obvious. The Tyco Model A Royal Flush has a shorter stature, but larger diameter.

Tyco Model A Royal Flush (L) vs. Tyco RFII (R)

The top of the Tyco Model A Royal Flush measures ~ 3 5/8 inches wide and the base is ~ 2 5/8 inches wide. Not to mention, it’s less than 1 inch tall. On the other hand, the Tyco RFII measures ~ 3 3/8 inches wide and the base is ~ 2 1/4 inches wide.

Measurements of the Tyco Model A Royal Flush

Measurements of the Tyco RFII Cover Plate

Once you install a cover plate with unique measurements, like that of the CSC Model A Royal Flush Concealed Cover Plate, the options for replacement decrease due to the size of the hole left behind.

CSC Model A Royal Flush Concealed Cover Plate Replacement Options

For the CSC Model A Royal Flush Concealed Cover Plate and sprinklers, you have two replacement options: replace all of the sprinklers and cover plates within the system or purchase Tyco Model A Royal Flush Concealed Cover plates. 

Choosing to replace the fire sprinkler heads within your system is a realistic option, however, that decision is dependent upon the amount of money you’re willing to spend. The expense of replacing components within your system can quickly add up when you factor in the cost of hiring a fire sprinkler contractor or fitter and potentially a designer to ensure the coverage from the new sprinkler is adequate for the protected area. This is in addition to the cost of materials and the subsequent inspections by the Authority Having Jurisdiction (AHJ). While it’s easy to think about replacing them yourself, it’s important to remember that all replacements must be done by a licensed professional!

Why, you ask?

There are many factors to take into consideration when installing or replacing components within a fire sprinkler system such as the temperature rating, orifice size, orientation, response time, K-Factor, coverage area, etc. Misconfiguring any one of these factors can result in an inadequate system and a failed inspection by the AHJ. Neither outcome is desirable. 

The second, and perhaps more feasible option, is to purchase Tyco Model A Cover Plates 135°F/57°C. We will admit up front – these are expensive replacement cover plates, whether you buy them from us or anyone else. This is driven by Tyco’s decision to make them scarce and hard to obtain, which has driven their production costs up. However – and here’s the good news - this cover plate meets the temperature ratings of CSC Royal Flush sprinkler head as well as fits the sprinkler perfectly. 

For use with Central 155° - 162°F / 68°-72°C Sprinklers
Style: Concealed    Element: Fusible Alloy

ModelOrificeTemperature
A3/8, 7/16, 1/2212°F MAX
76A3/8, 1/2, 17/32212°F MAX
AA3/8, 7/16, 1/2212°F MAX
A-11/2212°F MAX

This Tyco cover plate serves as a replacement to the CSC Model A Royal Flush. Although these cover plates are not technically limited in quantity, they are rare to find. Because they are so scarce, the manufacturing cost is high, resulting in higher prices overall. 

When you purchase the Tyco Model A Royal Flush from QRFS, you benefit from our competitive pricing. Furthermore, you gain the advantage of our extensive product knowledge, quality customer service, and quick delivery times (generally within 2-3 business days).  

It’s our goal to make sure you’re covered (pun intended!), so you know about the latest and greatest products on the market. We aim to provide you with the right solution at the right time. 


Have a question? Add a comment below for us, and we’ll reply as soon as we can to get you on the right track!

This blog was originally posted by Jason Hugo and Anna Hartenbach at QRFS.com/blog on September 14, 2017. If this article helped you find a solution, check us out at Facebook.com/QuickResponseFireSupply or on Twitter @QuickResponseFS.

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