800.676.0911 MADE IN THE USA

The Leader in Securing America's Water

Since 1979 Hydra-Shield Manufacturing, Inc. has been a leader in the Hydrant Security Industry, designing and manufacturing the highest quality fire hydrant locks, devices, accessories and valves. Unauthorized water usage puts an expensive burden on services, budgets and taxpayers. The need for proven hydrant security is why so many communities choose Hydra-Shield products. Many major municipal water departments rely on Hydra-Shield products, such as the Custodian®, Dome Lock, Plug Lock, V-lock and our other products as a main source for security purposes. Don’t be a victim of water theft, terrorism or criminal mischief when we can assist you with these problems.

Hydra-Shield manufactures unique valves for Fire Departments such as the Pre-Con valve and our Carlin valve. The Pre-Con inlet valve is the only automatic control valve on the market.  The Carlin valve controls the water flow from the hydrant to the fire apparatus and allows an extra man at the fire scene. Any Fire Departments concerned about having faster connection to the Hydrants should really consider using our Hydra-Storz adapters to speed up their operations. Our fire products are designed to save precious time in emergency situations.

we focus on three key areas:

Fyrelane USA products for the fire industry in cities and communities large and small enabling fire fighters to improve responsiveness and save lives

Hydra Shield products for supporting the Water Security Industry with life-saving technology.

Guardian products for the residential range top fire protection systems, preventing often catastrophic fire related events.


Hydra-Shield Manufacturing Inc. takes pride in crafting the highest quality products in water security. All of our products are made and assembled in the USA. We take pride in securing America’s water system and feel it is important to keep our manufacturing processes in America.


“Since the installation of the Custodians® in 1983, we have had greater control of our system.”

— Boston Water Department

“Our Maximum, hourly rate flows have declined dramatically with the installation of the Custodian®.”

— Department of Environmental Protection (DEP), New York City

“(The Custodian® has) … proven, without a doubt, to be the most effective tool to date in the fight against one of our most chronic problems.”

— Office of the Water Commissioner, City of Chicago

“Installing the Custodian® on our hydrants saved the City enough money on manpower repairs and water to pay for the program.”

— Newark, New Jersey Water Department

“Hydra-Shield caps have been an integral part of our system since 1980.”

— Charles Zitomer, P.E., Chief of Water Conveyance, Philadelphia

“We, too, are very satisfied with your product (The Custodian®).”

— South Central Connecticut Regional Water Authority, New Haven, CT

“This is the first thing we’ve found that has worked.”

— Kansas City Board of Public Utilities

“As a rural Fire Department drafting is a standard for us and with all the duties a pump operator has to perform on a fire scene it can be challenging even for a seasoned veteran. The answer to keeping prime and seamless transfer from tank to drafting has been the Automatic Inlet Valve. That is why all of our Engines are equipped with them. Thanks, Hydra-Shield for making such a great product.”

— Fire Chief, Russ Gregston, Kenny Lake Volunteer Fire Department