0
Why is the lawn sprinkler head leaks water when the main water valve is shut off?
Wiki User
∙ 12y ago
After a main water valve is closed the system's PVC pipes are still full of water and will drain to the lowest sprinkler head until the system is empty.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
Why the shower head still leaks when turn off the water?
The valve in the shower control needs to be renewed.
Are valve cover gasket and head gasket the same?
NO. The valve cover gasket seals the valve cover from leaks. The valve cover covers the valve train and it's components and it bolted to the top of the head. These components sit atop the head. The head is bolted directly to the engine block with another gasket. Water and oil flow through the head.
What is valve cover gasket?
Gasket that goes between head and valve cover to prevent leaks
What's the difference between a wet and dry fire sprinkler system?
The difference is what the pipes normally contain while standing by for a fire.A wet sprinkler system has pressurized water inside the system 24/7 for extinguishing a fire when any sprinkler head gets hot enough to open.A dry sprinkler system has pressurized air or nitrogen inside the piping. This keeps a dry-valve closed, and water out of the system. When a sprinkler fuses (opens), it allows the air to escape; then the dry valve opens and allows water to enter the system. Wherever there is an opened sprinkler, water will flow through it and put out the fire.Dry systems are used in areas where water filled piping could freeze, such as unheated warehouses, freezers, unheated buildings, etc.Additional precautions can also be taken to avoid accidental flooding when a sprinkler head is damaged. For example, a dry-valve controller may wait for a signal from a fire alarm panel before turning on the water.
Why does the sprinkler turn only when the water is on and turns in the direction opposite that of the water?
Newton's third law of motion. The turning of the sprinkler head is the equal and opposite reaction to the water leaving the sprinkler nozzles. The water goes out and the sprinkler nozzle is pushed backward, turning it in a circle because the arm is attached to the middle of the sprinkler. The higher the water flow, the faster the sprinkler spins.
How do you fix a leaking lawn sprinkler head?
Lawn sprinklers leak because the water source/ valve is not shutting off completely. - You will have to clean, repair or replace the solenoid valve on the line that leaks. - I have a major brand (flies in a storm) system and most of the low voltage solenoids leak. Wish I could be of more help, but the bottom line is, plastic valves will eventually leak.
How much water does a wet pipe fire sprinkler spray per minute?
25-150 gallons per minute is standard depending on the type of sprinkler head. Residential sprinklers will be closer to 25. That flow is for a SINGLE sprinkler head. Typically the fire will be extinguished by just activating one sprinkler head.
How do you install a sprinkler system?
There are two main methods of sprinkler system installation: open trench and pulled pipe. Open trench typically uses PVC pipe and pulled pipe typically uses poly pipe. Other than the pipe and fittings, the main difference in installation will be that the pulled pipe system requires a hole and saddle tee at the location of each sprinkler head. The steps for installing an automatic sprinkler system using an open trench method are: 1. Start with a good sprinkler system design (try searching "sprinkler system designer" for support options) 2. Make sure that you have all necessary tools, equipment, and permits 3. Have Blue Stakes mark all utilities prior to any digging 4. Install a backflow prevention device according to code 5. Place flags at the location of each sprinkler head 6. Mark and dig all trenches and valve manifold locations 7. Build and install valve manifolds (preassembled valve manifolds can make this easier) 8. Connect mainline pipe from water source connection to valve manifolds 9. Lay lateral line pipe from the valve manifolds to the location of each sprinkler head 10. Install tees and swing assemblies for each sprinkler head and flush lines 11. Connect sprinkler heads to swing assemblies; set head to level with ground 12. Install sprinkler timer/controller and connect sprinkler wire from timer to valve manifolds 13. Install nozzles on sprinkler heads 14. Install valve boxes (as required) and backfill all trenches 15. Run a zone by zone test and adjust nozzle patterns
Sprinkler System Repair?
form_title=Sprinkler System Repair form_header=9633 Please describe this location.*= () Home/Residence () Business Choose all the problems that your are currently having with your sprinkler system.*= [] Time clock needs to be reprogrammed [] Time clock isn't functioning properly [] No water to one sprinkler head [] No water to one area of sprinkler heads [] Water is running continuously [] Sprinkler direction/spread needs adjustment [] Sprinkler head(s) need(s) to be relocated [] System needs to be blown out and shut off (Fall shut down) [] System needs to be reactivated (Spring activation) [] Sprinkler head is broken Is this need emergency in nature?*= () No () Yes
What is in the piping of a dry sprinkler system?
Normally it is filled with compressed air. A dry sprinkler system is used in areas exposed to temperatures that would freeze water. When a fire is sensed the soft metal link of a sprinkler head melts , releases the compressed air which in turn opens a valve to a fire main allowing the system to flood with water and extinguish the fire. Parking ramps in the northern US have dry systems, for example, because of the weather.
When can you take relief from a sprinkler head?
If the ball is actually on it or if the sprinkler head interferes with your stance in any way also if water is coming out of it causing "casual water" Free drop within one club length no nearer the hole depending which of the above applies
What are wet and dry risers sprinklers?
a wet syestem always has water behind the head it is charged with water at all times all the pipeing is water.. wet system usually used in doors a dry system has a diffrent type of valve allowing a clapper inside the valve to have water from the underground being held back by air in which the system is charged with air until the valve trips (usually sprinkler being popped or very low air pressure) so the sprinkler system it self on a dry valve contains air until tripped then water flowes when tripped usually used outside parking garages and canopys or where very cold
