How do sprinkler risers work?

Asked By: Toribio Andrango | Last Updated: 20th February, 2020
Category: technology and computing computer peripherals
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Each riser taps into a permanent source of water, such as a pipe connected to the city water system, a water tank, or reservoir. Then, it conveys that water to the network of pipes running to fire sprinkler heads.

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In respect to this, what is a sprinkler riser?

Fire sprinkler riser is like a bridge between your water supply and the sprinkler pipes in your building. That's where water gets onto the building for fire extinguishing purposes. In actual sense, sprinkler riser is the main component of the sprinkler system.

Likewise, what is a riser for? Definition of Riser in Construction The term riser is used in the construction industry for any type of pipe, culvert, shaft, etc. that rises up in a vertical direction. A riser can be a waterline, sanitary line, air shaft, ventilation piping or shaft, catch basin vertical section, manhole vertical section, etc.

Correspondingly, do sprinkler risers need Teflon tape?

Standard Teflon tape or plastic compatible Teflon sealant around the riser or swing joint threads is all that is required to prevent leaks around the inlet threads of Hunter sprinklers. The Teflon also provides a long-lasting lubricant should it become necessary to remove the sprinkler for servicing.

What is a dry wet riser?

A dry riser is a normally empty pipe that can be externally connected to a pressurised water source by firefighters. Most buildings have a "wet riser" or "wet standpipe" system where the pipes are kept full of water for manual or automatic fire fighting operations.

33 Related Question Answers Found

What is a riser valve?

PRV or Pressure Reducing Valve - a special valve installed on the main water line coming in to the home so that water entering the valve from municipal mains is constricted within the valve body. Riser - a vertical metal or plastic supply line that connects a faucet or shower fixture to the water supply stop valve.

What does a fire riser do?

Fire riser is a component of the fire suppression system. It is a pipe connected to a pressurized water source which supplies water to the sprinkler system in the building. It is where the gauges, valves, and alarm devices are located.

What is a sprinkler room?

In a nutshell, a fire sprinkler riser room is a dedicated space for fire protection equipment situated on an outside wall at grade with direct exterior access. A water motor gong, or a bell that sounds when water flows through the sprinkler system—often installed on the outside wall of the sprinkler riser room.

What is a cut off riser?

Cut-Off Riser. Replaces damaged risers or to raise sprinkler heads to proper height. Made of durable polyethylene. Easily cuts to the desired length.

How long do sprinkler heads last?


A high-quality system that has been installed properly and receives regular maintenance in the spring and fall should last 20 years before needing any costly repairs. Various components of the sprinkler system should last: 40 years: Underground irrigation pipe system. 10-15 years: High-quality sprinkler heads.

Why don't my sprinklers pop up?

-- When a sprinkler head is clogged with dirt or other debris, it will soon fail to rise completely out of the ground. -- A leak in the water line can cause low water pressure and keep water from flowing to the sprinkler head. If water doesn't reach the sprinkler head, then it won't pop-up out of the ground.

How high should pop up sprinklers be?

The size of a pop-up sprinkler head ranges from 2 to 20 inches in height and 2-inch models are usually used in hard soil areas where digging is difficult.

How high should sprinkler heads be before sod?

Sod is generally 3/4 to 1 inch thick, so if all of your sprinkler heads are sticking 1/2 inch above the ground, they should line up perfectly with the sod once the ground compacts a bit.

How do I find a sprinkler head that won't pop up?

Use a metal detector to find buried sprinkler heads. Many valves have metal parts you can locate by running the metal detector over the surface of the ground. Valves are located directly under sprinkler heads.

Should I use Teflon tape on plastic fittings?


Don't use Teflon tape, Teflon paste or pipe dope. Teflon paste and pipe dope, just like Teflon tape, make threaded joints slippery. Their use on PVC fittings can be an invitation to over-torque. When working with threaded plastic fittings do use a proper sealant.

Should I flush sprinkler head ground?

If local codes require you to dig a trench deeper than you need, there's an easy fix to make sure your sprinkler head nozzles lie flush with the ground when not in use. Sprinkler system risers connect the heads to the pipes, and come in a variety of heights.

How do you seal a sprinkler pipe?

Thread-Seal Tape
  1. Unwrap 2 or 3 inches of thread-seal tape from the roll.
  2. Hold the tape tightly around the threads in one hand and pull the roll way in the other direction to break the tape.
  3. Thread the female pipe fitting, which has the threads on the inside, onto the taped threads immediately.

What is a riser in irrigation?

Definition: riser (irrigation). A riser is a set of pipes that connect and/or support a piece of irrigation equipment on or to the irrigation system. Typically the equipment is mounted at or above ground level and the riser connects it to pipes or tubes located below ground.

What is a PVC riser?

Product Overview
PVC Riser is ideal to use when connecting underground pipes to sprinkler heads. With molded gray Sch. 80 PVC construction, this riser is a durable option that is not designed for use under continuous pressure.

Why do sprinkler heads stay up?


Most pop-up sprinklers have springs that pull them back into the ground when there is no water pressure. If one of them won't retract, it's usually because some dirt or debris has lodged between the riser and the sprinkler body and is preventing the head from sliding smoothly.