This auto-drain valve is designed for use in domestic well water systems, irrigation and sprinkler systems, agricultural watering. It provides automatic drainage of water lines when line pressure drops below 10 PSI ((approx. 5 gpm) in a closed water system.

How does an automatic drain valve work?

They work by allowing the condensate to gravity feed into the valves condensation reservoir. When the liquid in the reservoir rises to a point where the float lifts off the seats, control air pressure is sent to the pneumatic piston to open the normally closed ¾ ported ball valve.

What is self draining valve?

A drain-down or self-draining valve will, on closure of the tap or shower, empty some of its water volume from the tap or shower outlet. In doing so air, which could be contaminated, is drawn into the outlet from the local environment and has the potential to colonise the outlet with harmful bacteria.

Do I need an automatic drain valve on my sprinkler?

Two or three automatic drain valves per sprinkler valve are usually recommended in each zone if it branches off in different directions. An automatic drain valve in these lines can help by draining the water down and out of the pipes before it can freeze.

How do you fix low head drainage?

To correct low head drainage, the most common solution is to install check valves at each of the sprinkler heads or rotors. Sprinkler check valves help prevent the collected water from draining from the heads.

What is an auto drain?

Automatic Drain:

An Automatic drain is a 2/2 valve which closes when the system is pressurised. The Drain opens when liquid accumulates and causes the float to rise, and on depressurisation.

How do stop and waste valves work?

A stop-and-waste valve is a fitting that attaches to your irrigation sprinkler lines, and it prevents water from freezing in the lines. These valves are left open for the duration of the year and are only closed or shut off manually when you want them to be closed.

What is self draining?

n. 1 preoccupation with oneself to the exclusion of others or the outside world. 2 (Physics) the process in which some of the radiation emitted by a material is absorbed by the material itself.

What is a king drain?

Product Overview. King Drains are perfect for removing residual water from irrigation systems, and providing long term freeze protection. The patented pressure sensitive valve releases water from systems slowly at the root level. A cushioned grip makes King Drains easy and comfortable to install.

How does a ball drip valve work?

A ball drip valve contains a small hollow brass ball that is inside the casing. When the fire department connection is pressurized, the ball is pushed against the drain hole allowing only a minimal amount of water to drip past.

How do I protect my sprinklers when freezing?

The main shut off valve for your irrigation system needs to be protected against freezing. Make sure it is wrapped with insulation (foam insulation tape and a plastic bag) to protect it from harsh winter temperatures and prevent it from freezing.

How do I winterize my sprinkler system without a blowout?

Not all systems need to have the water blown out of them. You can winterize a sprinkler system without an air compressor if all of your irrigation lines are buried at a slight downhill slope. Simply shut off the main water supply to your system and open the drain valves at the end of each zone.

What is the purpose of the drain check valve in a sprinkler?

Without check valves built into the body of the sprinkler, water leaks out of the lowest sprinkler in a zone. Check valves prevent this type of drainage from happening.