For more additional info. in reading this web site, please see the following Terms and Definitions. |
First ,thank you for visiting 1-2-Sprinkle™ web pages . With the reason of this site is written in some specific/technical terms. To be more clarified, we have provided their terms and definitions used in this site for you, please see in glossary listed below:
- Airlock
- Automatic Drains
- Automatic sprinkler system
- AVB (Atmospheric Vacuum Breaker)
- Backflow
- Backflow Preventer
- Ball valve
- Bar
- Bleed valve
- Capacity
- Check valve
- Cistern
- Class pipe
- Controller
- DCA (Double Check Assembly)
- Distributing Pipe
- Double Check Valve
- Double Ended Pump
- Downstream
- Drip Irrigation
- Duty Cycle
- Drains (automatic)
- Drip Emitter
- Dynamic pressure
- ELCB
- Elevation Change
- Ell
- FIPT
- Fitting
- Float Operated Valve
- Flow Control
- Flow Regulator
- Flow Restrictor
- Flow switch
- Freeze switch
- Friction Loss
- Gate Valve
- Globe Valve
- Gear Driven Rotor
- Glue
- GPM
- Hose Bib
- Impact sprinkler
- Impeller
- Interval program
- Kinetic energy
- Layout
- Lateral lines
- Main line
- Master valve
- MIPT
- Moisture sensor
- Multiple Start times
- Negative Head
- Nip ple
- Nozzle
- PCD
- Plot plan
- Pop-up
- Potential energy
- Precipitation rate
- Pressure tank
- Primer
- Program
- Professional Grade parts
- PRS
- PRV (Pressure Reducing Valve)
- Pump start
- Pump hose
- PSI
- PVB (Pressure Vacuum Breaker)
- PVC
- Radius
- Rain delay
- Rain switch (sensor)
- RPZ (Reduced Pressure Zone)
- Riser
- Rotor sprinkler
- SAM
- Schedule 40
- SDR pipe
- Seasonal adjust
- Servicing valve
- Shut-off Valve
- Siphon
- Slip
- Solenoid valve
- Solvent weld
- Spray sprinkler
- Sprinkler
- Start time
- Static pressure
- Station
- Station time
- Station valve
- Surge protection
- Swing joint
- Teflon® tape
- Twin pump
- Upstream
- Valve box
- Water day
- Water hammer
- Water pump
- Watering interval
- Wind switch
Section of pipework which, due to its layout, enables a pocket of air to be trapped. This results in zero or very little flow through the pipe.
Back to 1-2-Sprinkle™glossary index.
See Drains (automatic)
Back to 1-2-Sprinkle™glossary index.
The automatic system that act of watering on your lawn, plants, flowers, and garden. (Also used in another words such as 'automatic sprinkling system', 'automatic lawn sprinkler', and etc). The manual irrigation is done by hand, using a hose, sprinklers or even an installed system that requires manual activation. (In Thai: ระบบรดน้ำอัตโนมัติ, ระบบรดน้ำต้นไม้อัตโนมัติ, หรืออ่านทับศัพท์ได้ว่า.. ออโตเมติก-สปริงเกลอร์ )
Back to 1-2-Sprinkle™glossary index.
AVB (Atmospheric Vacuum Breaker)
The lowest grade of backflow prevention equipment. When the pressure drops, the AVB allows air to enter the line to prevent back siphonage of contaminated water into the water supply. AVBs do not protect against back pressure.
Back to 1-2-Sprinkle™glossary index.
Means a flow in a direction contrary to the intended normal direction of flow.
Back to 1-2-Sprinkle™glossary index.
An absolutely critical piece of equipment which serves to prevent the flow of contaminated water from the lateral lines back into the public water supply. Backflow preventers include AVB (Atmospheric Vacuum Breaker), PVB (Pressure Vacuum Breaker), DCA (Double Check Assembly), and RPZ (Reduced Pressure Zone) devices.
Back to 1-2-Sprinkle™glossary index.
A type of valve in which a round ball rotates to turn the flow on and off. The ball has a hole through the center such that water flows when the hole is aligned parallel to the direction of flow.
Back to 1-2-Sprinkle™glossary index.
A unit of measurement of water pressure approximately equivalent to a column of water 10m high or 14.5 lbf/in2 or 100 kPa. per bar.
Back to 1-2-Sprinkle™glossary index.
A small screw, usually in the top of an automatic valve, used to turn the valve on manually. An external bleed will spill water outside of the valve (inside of the valve box) to activate the valve. An internal bleed will spill water internally (to the downstream side of the valve) so the valve box stays dry and water is not wasted.
Back to 1-2-Sprinkle™glossary index.
Measured in GPM, the “design capacity” is the maximum amount of water available for use in an irrigation system. The available design capacity determines how many sprinkler heads may be in operation at the same time.
Back to 1-2-Sprinkle™glossary index.
A plumbing fitting designed to allow water flow in one direction only (also called 'None-return valve' ). See also Double Check Valve.
Back to 1-2-Sprinkle™glossary index.
Means a fixed container for holding water at atmospheric pressure. It is normally fitted with a float operated valve and warning pipe.
Back to 1-2-Sprinkle™glossary index.
A technically incorrect but commonly used name used to refer to SDR pipe.
Back to 1-2-Sprinkle™glossary index.
A mechanical or electronic device which instructs the station valves to operate. Controller is a device that automatically opens and closes the valves in an irrigation system according
to a pre-set program.
Back to 1-2-Sprinkle™glossary index.
A backflow preventer consisting of two shut off valves at either end, two spring loaded serviceable check valves, and four test ports to allow testing of the performance of the device.
Back to 1-2-Sprinkle™glossary index.
Means any pipe (other than a flush pipe or warning pipe) conveying water from a cold water storage cistern.
Back to 1-2-Sprinkle™glossary index.
Two check valves in series with a test point between the two.
Back to 1-2-Sprinkle™glossary index.
See Twin Pump.
Back to 1-2-Sprinkle™glossary index.
In the same direction as flow away from a given point of reference. (With the flow of water from a given point of reference)
Back to 1-2-Sprinkle™glossary index.
Drip irrigation is an irrigation method that applies water slowly to the roots of plants, by depositing the water either on the soil surface or directly to the root zone. Drip irrigation usually employs devices called emitters, which emit the water drop by drop. Drip irrigation systems may be manually operated or may be operated by a controller with electric or hydraulic valves. Drip irrigation systems employing emitters need to have filters because of the small size of the emitter orifices. It's a method of microirrigation by applying a calculated amount of water slowly and evenly to a plant’s root area. Discharge rates are generally less than 8 Liters/hour (2 gal/hour) for single-outlet emitters and 12 Liters/hour (3 gal/hour) per meter for line-source emitters ASAE.) This process keeps moisture in the soil within the optimum range for healthy growth and minimum stress. Drip irrigation can save time and money, produce higher yields and quality, and control weeds. Drip irrigation, sometimes called 'Trickle irrigation')
Back to 1-2-Sprinkle™glossary index.
The recommended operating time of the product expressed as a time ‘on’ and a time ‘off ‘. A continuously rated pump can be operated non stop.
Back to 1-2-Sprinkle™glossary index.
Automatic drains are sometimes installed in lateral lines to allow the water to drain from the pipe between waterings. They are recommended in areas where the ground freezes, but not recommended in warm climates because drains can hide valve leaks.
Back to 1-2-Sprinkle™glossary index.
A low-volume emission device that delivers water at low flow rates, one drip at a time;
drip emitters are used to apply water directly to an individual plant root zone in drip irrigation.
Back to 1-2-Sprinkle™glossary index.
The water pressure in the pipework to a fitting whilst flow is taking place. Dynamic pressure is the water pressure at any point in the system at a given flow. Dynamic pressure will vary throughout the system due to friction loss and elevation changes. (also called Flow pressure,or Maintained pressure, or Running pressure )
Back to 1-2-Sprinkle™glossary index.
Earth Leakage Circuit Breaker.
Back to 1-2-Sprinkle™glossary index.
Changes in elevation also cause changes in water pressure. .." Each foot of elevation change means a change in pressure of 0.433 PSI. That is, it takes 0.433 PSI to move water up one foot. And if water flows down one foot, there will be a pressure gain of 0.433 PSI "...
Back to 1-2-Sprinkle™glossary index.
A fitting which has a 90 degree bend to route pipe around a corner, sometimes called an "elbow."
Back to 1-2-Sprinkle™glossary index.
Fem ale Iron Pipe Thread. The larger of the two threaded parts, with threads on the inside of the hole.
Back to 1-2-Sprinkle™glossary index.
A part used to connect two pipes, or another fitting and a pipe.
Back to 1-2-Sprinkle™glossary index.
Is a valve used to control the flow of water into a cistern, the valve being controlled by the level of water in the cistern.
Back to 1-2-Sprinkle™glossary index.
A device that controls flow independent of pressure drop.
Back to 1-2-Sprinkle™glossary index.
A device with moving parts which responds to variable inlet pressures to control flow at a reasonably constant rate. (Also called 'Flow Limiter')These are subdivided into two types:
a) Fixed – manufactured in a range of predetermined flow rate settings.
b) Variable – manually adjustable to provide different flow rate settings.
Back to 1-2-Sprinkle™glossary index.
A
device with no moving parts which restricts flow. Unlike a flow regulator it does not keep a constant flow when the supply pressure varies.
Back to 1-2-Sprinkle™glossary index.
Electro mechanical device that senses a small flow of water and energises an electrical contact.
Back to 1-2-Sprinkle™glossary index.
A switch that opens the common line and interrupts watering whenever the temperature falls below a certain value. Watering is enabled as soon as the temperature rises above the setpoint.
Back to 1-2-Sprinkle™glossary index.
Friction loss is a pressure loss caused by water flowing through the system. This loss occurs in every component of the system through which water flows. Pipes, valves, water meters, backflow preventers and pipe fittings all provide some resistance to the water flowing through them, creating a pressure loss. The roughness on the inside surfaces of these components creates a drag on the flowing water causing turbulence, which reduces pressure. The shape of each component, or changes in flow direction (such as within a valve) add to the pressure loss.
Back to 1-2-Sprinkle™glossary index.
A type of valve where flow is stopped by a sliding plate that is controlled by a turning handle. The handle typically turns a dozen or so times to close the valve.
Back to 1-2-Sprinkle™glossary index.
A type valve where a washer presses on a round opening to shut off the water flow. The handle turns several revolutions from full open to full closed. The sink and outdoor faucets in most homes are globe valves except for single lever and push/pull faucets.
Back to 1-2-Sprinkle™glossary index.
A type of rotor sprinkler where the rotating motion is achieved by a water driven gear mechanism.
Back to 1-2-Sprinkle™glossary index.
A solvent based adhesive used to permanently attach a pipe to a fitting or valve, or to attach two fittings together.
Back to 1-2-Sprinkle™glossary index.
Gallons per Minute, a flow rate. Multiply GPM by 3.9 to obtain the flow rate in liters per minute.
Back to 1-2-Sprinkle™glossary index.
This is just another name for a faucet outside of your house.
Back to 1-2-Sprinkle™glossary index.
An old type of rotor sprinkler where the rotating motion is provided by a moving arm which strikes the water jet leaving the nozzle. (Alt: Impact sprinkler, sometimes called ' Impact Rotary' ,' Impact Rotor' ) Back to 1-2-Sprinkle™glossary index.
The internal part of the pump that is driven by the motor, and is used to move the water.
Back to 1-2-Sprinkle™glossary index.
A watering schedule which operates at a regular frequency which is defined by the number of days between watering events. An interval program might water every 10 days or every 15 days instead of every Wednesday.
Back to 1-2-Sprinkle™glossary index.
The energy stored in moving water. When moving water stops suddenly, this kinetic energy is converted to potential energy and a brief pressure spike results.
Back to 1-2-Sprinkle™glossary index.
A bird’s eye view showing how a building sits on the building lot, typically showing setbacks (how far the building must sit from the road), easements, rights of way, and drainage. It's an overhead view plan that shows the location of the home on the lot. Includes all easements, property lines, set backs, and legal descriptions of the home. Provided by the surveyor.
Scale diagram showing the proposed or existing use of a specific parcel of land; the location of the structure in comparison to the boundaries of the property, utility services, compass directions, etc
A diagram which shows schematically the equipment layout, the position of roads, buildings and other constructions inside an industrial plant with their dimensions and distances in between.
Back to 1-2-Sprinkle™glossary index.
This is a term used to describe the pipes downstream from each station valve. Any particular lateral line will not be under pressure unless that particular station is being watered.
Back to 1-2-Sprinkle™glossary index.
The pipe which carries water to the station valves.
Back to 1-2-Sprinkle™glossary index.
A valve which opens whenever any station is watering, and closes when no station valves are on, shutting off the pressure in the main line. A master valve will greatly reduce any water loss due to a leaky station valve because the leaky station valve can only leak while the master valve is providing pressure to the system. Also, if you damage the irrigation main line, a master valve will control water loss so the main can be repaired without shutting off the water supply.
Back to 1-2-Sprinkle™glossary index.
Male Iron Pipe Thread. The part of the joint with the threads on the outside.
Back to 1-2-Sprinkle™glossary index.
A sensor, usually installed in the ground, which disables watering when the soil is wetter than the setpoint for the sensor.
Back to 1-2-Sprinkle™glossary index.
A controller feature that allows a program to pe operated multiple times on the same watering day. This is important to allow the water time to soak in on steep slopes of clay soils.
Back to 1-2-Sprinkle™glossary index.
If the cistern is below the level of the shower head a gravity flow of water will not occur. A pump with special switching can be used to obtain a flow of water.
Back to 1-2-Sprinkle™glossary index.
This word should have two p's and no space in it, but we spell it this way so visitors to our site won't trigger their surf protection software for dirty words. These are a short piece of pipe threaded on both ends, typically used to connect a sprinkler to a fitting. Nip ples are typically only an inch or two long, but can be as long as a two or three feet when used for shrub sprinklers.
Back to 1-2-Sprinkle™glossary index.
The part of a sprinkler that defines the spray pattern.
Back to 1-2-Sprinkle™glossary index.
Pressure Control Device- a Toro sprinkler feature which controls pressure at the head to reduce misting.
Back to 1-2-Sprinkle™glossary index.
A sprinkler that rises from it's case when pressure is applied to the sprinkler, and retracts when the pressure is shut off.
Back to 1-2-Sprinkle™glossary index.
The energy stored while water is under pressure and not moving.
Back to 1-2-Sprinkle™glossary index.
The depth of water distributed on the ground over a given period of time. A typical precipitation rate for pop-up spray sprinklers is two inches per hour, about equal to a hard rain.
Back to 1-2-Sprinkle™glossary index.
A fully enclosed tank with an air space inside. As water is forced in, the air compresses. The stored water may be released after the pump has stopped. Most pressure tanks contain a rubber bladder to capture the air. If so, synonym: captive air tank. Used in conjuction with wells to maintain pressure or to ensure consistent water pressure.
Back to 1-2-Sprinkle™glossary index.
Used to soften the surface of plastic pipe before applying glue.
Back to 1-2-Sprinkle™glossary index.
Parts made especially for irrigation industry professionals. These are the parts that irrigation companies install, and they are higher quality and more reliable than the parts typically sold through large retail hardware warehouses.
Back to 1-2-Sprinkle™glossary index.
A predefined list of stations which operate sequentially each time the program is scheduled. The best controllers have three or more programs which can be operated on different schedules.
Back to 1-2-Sprinkle™glossary index.
Pressure Reducing Spray- A Rain Bird® sprinkler feature which controls pressure at the head to reduce misting and protects against extreme water loss in the event a nozzle falls off of the sprinkler stem.
Back to 1-2-Sprinkle™glossary index.
Pressure Reducing Valve- a pressure regulator installed between the water meter and the backflow preventer. The purpose of the PRV is to reduce the pressure to the sprinkler system when excess pressure is present. If excess pressure is dropped through friction losses (by using smaller diameter pipe) water hammer will result.
Back to 1-2-Sprinkle™glossary index.
A controller feature which turns on a pump or master valve whenever a station is watering.
Back to 1-2-Sprinkle™glossary index.
A flexible pipe that connects the pump to rigid pipework.
Back to 1-2-Sprinkle™glossary index.
Pounds per square inch. Measure of pressure in water line,used to indicate the amount of pressure in a given piping system.
Back to 1-2-Sprinkle™glossary index.
A type of backflow preventer which is similar to the AVB, but which has a strong spring to help force the device to open to atmosphere when the pressure drops.
Back to 1-2-Sprinkle™glossary index.
Poly Vinyl Chloride, a type of plastic used for irrigation pipe and fittings.
Back to 1-2-Sprinkle™glossary index.
The distance from the middle to the edge of a circle. For a sprinkler, this is the distance from the sprinkler to the edge of the spray pattern.
Back to 1-2-Sprinkle™glossary index.
A controller setting that allows watering to be interrupted for a period of time. If the delay is programmable, you can set it to delay watering for a specific period of days and the controller will resume watering automatically after the delay period.
Back to 1-2-Sprinkle™glossary index.
A switch that opens the common line and interrupts watering as long as the rain switch is moist after a rain. Watering is automatically enabled several days after a rain. Some rain switches have an adjustable disable period.
Back to 1-2-Sprinkle™glossary index.
Similar to the DCA, except with the device designed to open to atmosphere when the forward pressure drop falls below a preset value.
Back to 1-2-Sprinkle™glossary index.
A fixture, usually used in shrub areas, on which a nozzle is attached. Risers do not move up and down at the beginning and end of the watering cycle.
Back to 1-2-Sprinkle™glossary index.
A type of sprinkler where a stream of water is moved back and forth across the area being watered. While the watering is not uniform at any one instant, it is uniform over a period of several minutes or longer.
Back to 1-2-Sprinkle™glossary index.
Seal-a-Matic- A Rain Bird sprinkler feature (essentially a check valve) which prevents the loss of water from low heads after watering is stopped.
Back to 1-2-Sprinkle™glossary index.
A standard for pipe sizes that is rated for higher operating pressure than most SDR pipe at smaller diameters. As the pipe diameter of schedule 40 pipe increases, the maximum operating pressure rating drops steadily, unlike for SDR pipe.
Back to 1-2-Sprinkle™glossary index.
A standard for pipe size where the SDR (standard dimension ratio) is the diameter of the pipe divided by the wall thickness. All diameters of a given SDR number have the same maximum operating pressure rating, so for very large diameters, SRD pipe often has a higher pressure rating than schedule 40 pipe! The "40" in schedule 40 does not represent the ratio of pipe diameter to wall thickness for schedule 40 pipe. At smaller diameters, schedule 40 pipe has a thicker wall than SDR 21 pipe.
Back to 1-2-Sprinkle™glossary index.
A control which adjusts all station times by a set percentage.
Back to 1-2-Sprinkle™glossary index.
A valve for shutting off the flow of water in a pipe connected to a water fitting to facilitate the maintenance or servicing of that fitting. See also Shut-off valve.
Back to 1-2-Sprinkle™glossary index.
A valve, usually a ball valve or gate valve, used to shut off the supply to a sprinkler system. The shut-off valve is located near the connection to the main water supply.
Back to 1-2-Sprinkle™glossary index.
A system of piping or tubing where the exit point is lower than the entry point and where some part of the piping is above the free surface of the fluid source. Back Siphonage:
Means a backflow caused by the siphonage of liquid from a cistern or appliance into the pipe feeding it, possibly leading to a contamination of the water supply.
Back to 1-2-Sprinkle™glossary index.
A fitted joint that is secured by applying primer and glue, then slipping the two pieces together until the glue sets.
Back to 1-2-Sprinkle™glossary index.
An electrically-activated (or electromagnetically or pneumatic or hydraulic activated ) directional control valve that opens and closes when electric power is applied to it. The solenoid valve turns the Touchless faucet water flow on and off.
Back to 1-2-Sprinkle™glossary index.
A joint that is secured by glue or solvent based cement. The same type of joint described under slip above.
Back to 1-2-Sprinkle™glossary index.
A type of sprinkler where water is thrown evenly across the watered area at all times. The spray pattern is fixed and does not move during watering.
Back to 1-2-Sprinkle™glossary index.
A pressurized system where water is distributed through pipes to the field and applied through a variety of outlet sprinkler heads or nozzles. Pressure is used to spread water droplets above the crop canopy to simulate a rainfall with potentially ideal intensities and durations for crop needs. (Alt: sprinkler,sprinkle,sprinker,sprinkling, spinker, spinkler : สปริงเกลอร์, รวมถึงคำที่มักใช้ผิดเช่น สปริงเกรอร์, สปริงเกรอร, สปริงเกรอ, สปริงเกร้อ, สปริงเกิร์น, สปริงเกิร์ล, สปริงเกลอร, สปริงเกลอ, สปริงเกล้อ, สปริงเกิล์น, สปริงเกิล์ล, สปริงเกอร์, สปริงเกอร , สปริงเกอ, สปริงเก้อ, สปริงเกิน, สปริงเกิล, สปริงเกิ้น, สปริ งเกิ้ล, สปลิงเกรอร์, สปลิงเกรอร, สปลิงเกรอ, สปลิงเกร้อ, สปลิงเกิร์น, สปลิงเกิร์ล, สปลิงเกลอร์, สปลิงเกลอร, สปลิงเกลอ, สปลิงเกล้อ, สปลิงเกิล์น, สปลิงเกิล์ล, สปลิงเกอร์, สปลิงเกอร, สปลิงเกอ, สปลิงเก้อ, สปลิงเกิน, สปลิงเกิล, สปลิงเกิ้น, สปลิงเกิ้ล, สปิงเกรอร์์, สปิงเกรอร, สปิงเกรอ, สปิงเกร้อ, สปิงเกิร์น, สปิงเกิร์ล, สปิงเกลอร์, สปิงเกลอร, สปิงเกลอ, สปิงเกล้อ, สปิงเกิล์น, สปิงเกิล์ล, สปิงเกอร์, สปิงเกอร, สปิงเกอ, สปิงเก้อ, สปิงเกิน, สปิงเกิล, สปิงเกิ้น, สปิงเกิ้ล )
[.. สปริงเกลอร์ (Sprinkler) คือ หัวฉีดที่ติดตั้งอยู่กับที่ หรือในบางระบบอาจติดตั้งแบบเคลื่อนที่ มีการจ่ายน้ำโดยส่ง ผ่านระบบท่อทาง น้ำที่ถูกฉีดออกจากสปริงเกลอร์ อาจมีรูปแบบที่แตกต่างกัน ตามลักษณะ ของหัวจ่าย ในแต่ละประเภท เช่นอาจออกพ่นน้ำเป็นฝอยให้กระจายไปทั่วบริเวณที่ต้องการ หรือในรูปแบบน้ำหยด หรืออาจทำให้ฉีดพ่นเป็นหมอกหรือละอองน้ำ.. ]
Back to 1-2-Sprinkle™glossary index.
The time that a particular program waters on its assigned day.
Back to 1-2-Sprinkle™glossary index.
The water pressure existing at a fitting when no flow is taking place. Static pressure is the pressure of water in a completely closed system, such as a main line with all of its outlet valves turned off. The static water pressure can simply measure at the water source (usually the water meter or pump outlet). It indicates the potential pressure that is available to operate your irrigation system.
(also called standing pressure)
Back to 1-2-Sprinkle™glossary index.
A portion of the sprinkler system with several sprinklers activated by one output from the controller. While usually only one valve is connected to each output, it is possible for two or more valves to be connected to one station if the controller transformer can handle the load.
Back to 1-2-Sprinkle™glossary index.
The length of time that a particular station waters when instructed.
Back to 1-2-Sprinkle™glossary index.
The valve that supplies water to one station, or portion of the irrigation system.
Back to 1-2-Sprinkle™glossary index.
A controller feature where electrical power line fluctuations are isolated to prevent harm to the controller and provide for reliable retention of the program.
Back to 1-2-Sprinkle™glossary index.
An assembly of three ells and a nip ple to provide for convenient height adjustment of a sprinkler, and to reduce the chance of damage when a sprinkler is run over by a vehicle.
Back to 1-2-Sprinkle™glossary index.
A non-adhesive plastic tape used to seal threaded joints to prevent leakage.
Back to 1-2-Sprinkle™glossary index.
A pump with two independent inputs and outputs typically used for boosting both water supplies to a mixer and/or other terminal fittings ('Two pumps' or 'Inlet Pump' can be used in place of a twin pump, Note: 'Outlet pump' is common used in term of 'Single pump' while 'Inlet Pump is usually refer to 'Twin Pump').
Back to 1-2-Sprinkle™glossary index.
In the opposite direction to flow towards a given point of reference (Against the flow of water from a given point of reference).
Back to 1-2-Sprinkle™glossary index.
A plastic enclosure which surrounds an underground valve to protect it yet still allow access to the valve.
Back to 1-2-Sprinkle™glossary index.
The day on which a particular program is assigned to execute.
Back to 1-2-Sprinkle™glossary index.
The sudden spike in water pressure observed when moving water is stopped suddenly. This occurs when the kinetic energy in the moving water is converted into potential energy. Pressure spikes due to water hammer are larger when schedule 40 pipe is used as opposed to SDR ("class") pipe. This is primarily because the inside diameter of SDR pipe of a given nominal size is larger than the inside diameter of schedule 40 pipe, resulting in a lower water velocity, and therefore less kinetic energy. A secondary reason is that SDR pipe is more elastic than schedule 40 pipe (since it has a thinner wall thickness in the common sizes) and absorbs the kinetic energy, reducing the maximum pressure during the water hammer spike.
Back to 1-2-Sprinkle™glossary index.
A pump is a mechanical device used to move or transfer liquids or gases. The pump in the automatic sprinkler system is a device that transfer the water to from water tank or reservoir to the garden ,for example.
Back to 1-2-Sprinkle™glossary index.
The number of days between watering events.
Back to 1-2-Sprinkle™glossary index.
A switch that opens the common line and interrupts watering whenever the wind speed exceeds a certain value. Watering is enabled as soon as the wind speed drops.
Back to 1-2-Sprinkle™glossary index.
Some of the text on 1-2-Sprinkle™ web pages are presented fonts in Thai character (UTF-8). All web pages has been created to automatic switch your browser to encode the source page to UTF-8 but in case your brower is old version or was set to 'fixed' font, with that condition you may required to manually set by selecting menu as following steps: View-> Encoding-> Unicode (UTF-8).
For more information, please feel free to contact us via email: support@1-2-sprinkle.com