Introduced in the early 20th century as a means of advancing fire protection infrastructure, Post-Indicator Valves (PIVs) quickly became a standard component of water-based suppression systems throughout the US – and for a good reason.

Sturdy in build yet flexible in application, a high-quality PIV valve is a multi-purpose tool that can streamline operations in many different settings and, sometimes – even mean the difference between life and death.

What is the function of PIV?

Regardless of the specific type of Post-Indicator Valve (PIV), these instruments serve the following primary purposes:

• Controlling the flow of water from an (underground) water main to water-based suppression systems.
• Enhancing security by preventing unauthorized operation, with some PIVs featuring lockable mechanisms or tamper-evident designs.
• Facilitating emergency responses, by allowing for quick identification and operation by emergency personnel, such as firefighters, during critical situations.
• Facilitating maintenance efforts, by enabling utility personnel to easily access and isolate sections of the water grid.

Why are post-indicator valves used

Why are post-indicator valves used?

Their excellent utility, flexibility, and ease of use make PIVs applicable in a diverse range of settings and for various reasons. Here are some examples:

• Fire protection and suppression systems: To ensure steady water supply to fire hydrants and sprinkler systems.
• Industrial and commercial settings: To control water supply to processing equipment, cooling systems, or fire suppression systems, as well as to enhance security and prevent unauthorized water usage.
• Municipal and water utility applications: For managing water distribution networks, as well as isolating sections for maintenance or repair.
• High-security facilities (e.g., government, military, data centers): To prevent unauthorized access to water supplies, reducing potential sabotage risks, and to ensure rapid response in emergency situations.
• Areas with high water tables or flood-prone regions: To enable quick shut-off in case of flooding, preventing further water intrusion, and to facilitate drainage and flood recovery efforts.

Where are post-indicator valves required?

While PIVs are optional (but welcome) in most facilities/systems, in some settings their installation is often required by regulations, codes, or standards. Here’s a brief (non-exhaustive) tabular overview:

Where can I find a high-tier PIV valve for sale near me?

At Blair Supply, you can find a broad selection of not only top-quality PIVs – but also other water/wastewater materials, all sourced from some of the most renowned manufacturers in the US and beyond. In business for nearly seven decades, we’ve been recognized as front liners of the industry, catering to clients in a diverse range of settings with the utmost reliability and dedication. 

Whether your project is commercial, municipal, or residential, whether it’s taking place in our native Monroe County, NY or elsewhere in the US, you can count on us to source and size the materials you need and deliver them where you need them and when you need them – every time. Connect with us today and discover how we can create value for your business!