Project Spotlight: Post Indicator & Gate Valve Replacement
This week, we’re spotlighting a recent post indicator valve (PIV) and 10-inch gate valve replacement — a challenging but essential upgrade to a property’s fire protection infrastructure.
What Is a Post Indicator Valve — and Why Does It Matter?
A PIV is a crucial component in many fire protection systems, typically installed above ground to operate a buried gate valve. It allows firefighters or maintenance crews to easily check whether water is flowing or blocked — without needing to access underground piping.
- Post: the above-ground housing
- Indicator: displays “OPEN” or “SHUT” clearly through a window
- Function: provides safe, visible control of fire protection water flow
These systems are often found on fire sprinkler mains, private hydrants, campus fire loops, and industrial fire systems.
Our Replacement Project
The existing setup at the site dated back to 1977. Here’s how we completed the upgrade:
- Shutdown & drain: we shut down the full fire protection loop and drained the system
- 811 call: we contacted Ohio 811 before excavation to ensure safety and compliance
- Excavation: dug more than 10 feet deep to access the valve
- Removal: the old bolts were cut off using a plasma cutter
- Heavy lifting: a small truck crane safely removed and replaced the equipment
Why the PIV and Gate Valve Work So Well Together
The PIV controls the gate valve located underground. Turning the PIV handle lifts or lowers the gate inside the pipe, allowing or blocking water flow. Together, they offer:
- NFPA 24 fire code compliance
- Tamper-resistant security
- Immediate visual confirmation
- Reliable operation in outdoor environments
Trust the Experts
Whether your system is aging or you’re preparing for an inspection, we handle PIV and valve replacements with precision and compliance in mind — see our fire sprinkler services.
About the authors
Fairfield Fire Protection is a family-owned company based at 508 W. Sixth Ave., Lancaster, Ohio, proudly serving Lancaster and surrounding communities with commercial fire protection services since our founding. Our licensed technicians inspect, test, install, and service fire sprinkler systems, fire alarms, extinguishers, hydrants, exit lighting, and kitchen suppression systems across Ohio.
We are members of NAFED and the NFPA, and we work to NFPA 10, 13, 25, 72, and 96 and the Ohio Fire Code. This article reflects field practice on commercial systems our technicians inspect and service every week.
Questions about your system? Call (740) 400-2585 or email Service@FairfieldFireProtection.com. For 24-hour emergencies, call 740-974-0363.