Is a post indicator valve a gate valve?

Is a post indicator valve a gate valve?

Reliable Post Indicator Valves are resilient-seated gate valves offered in a variety of sizes and end connections. Styles offered include non-rising stem (NRS) gate valve, and vertical post indicator valve (PIV).

What is a PIV post indicator valve?

A postindicator valve (PIV) (photo 1) is commonly used as the valve operator for. automatic fire sprinkler and standpipe systems, where the system main valve is located. underground outside the building. PIVs may be located in paved or landscaped areas.

Are post indicator valves required?

Except for fire department connections, Section 6.3. 6.1. 1 says that every water supply should have a listed indicating valve in an approved location. Post indicator valves are most commonly used to fulfill this requirement.

Where are post indicator valves used?

Post indicator valves are used in any application where responding firemen need a clear indication of the open or closed position of the valve, and an easy way to open or close the water supply from outside the building.

How do I choose a valve size?

So, how do you size a control valve anyway? When sizing a control valve, the rule of thumb is to size it so that it operates somewhere between 20-80% open at maximum required flow rate and whenever possible, not much less than 20% open at the minimum required flow rate.

What is the purpose of a post indicator valve?

Installed in the main water line serving a building, the Post Indicator Valve (PIV) is a valve used to control the water supply to the fire sprinkler system. Most commonly a raised post, the PIV is found in the yard near the building or mounted on the outside of the building.

What is post indicator valve for?

Installed in the main water line serving a building, the Post Indicator Valve (PIV) is a valve used to control the water supply to the fire sprinkler system. The PIV has a display that shows whether water is being pumped into the system (“OPEN”) or not (“CLOSED”).

How tall does a post indicator valve need to be?

While it doesn’t weigh-in on when these valve assemblies should be used, it states that the top of the post must be 32” to 40” above grade when they are. The section requires post indicator valves to be protected from mechanical damage. It also notes that the grading requirement doesn’t apply to wall post indicator valves.

How is an indicator valve installed on a water main?

The assembly typically consists of a conventional gate or butterfly valve installed on the fire system water main. The indicator post is installed on a mounting plate on the bonnet and protrudes from the ground or wall. The top of an indicator post features a lockable actuator that looks like a red metal steering wheel or a wrench/handle.

What kind of wrench to use for post indicator valve?

Red post indicator valves are designated for stopping fires, while yellow, green, and blue ones indicate domestic or industrial purposes. Components of a post indicator valve. Universal PIV wrenches can be used to turn the operating nut and open and close the underground fire line valve.

What are the requirements for an indicating valve?

An indicating valve in a pit A backflow preventer with an indicating valve at least 40’ from the building A non-indicating valve, such as an underground gate valve in an approved roadway box with T-wrench at least 40’ from the building Control valves installed in a fire-rated room accessible from the exterior

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