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Attach to a hose-threaded regulator or faucet when you want to branch the drip mainline tubing.
- "T" Inlet: 3/4" FHT (Female Hose Thread) w/ Hose Washer
- Both ends are .700" Compression Fit
- This is for use with our 5/8" (.700" OD) Poly Tubing or our 5/8" (.700" OD) Drip Emitter Tubing
Ag Products 700-CST-WW, , Agrifim CST 700, , Aquarius Brands 700-CST-WW, , DIG 24-059, , Drip Depot 1064, , Dripworks CST, , Ewing 12003020, , Hit RPCSTW 700, , Jain Irrigation 700-CST-WW, , MrDrip CPST700, , Pepco 700-CST-WW, , Raindrip R339CT R339CB 339G10, , Salco SLV-CSTEE-700, , The Drip Store LF009, , Weathermatic SLV-CSTEE-700, , Drip Fitting, , Irrigation Fitting, , Poly Fitting
What Size Is My Drip Tubing?
Tip: Check compression ring color
Drip Irrigation System Design and Installation Guide - Micro Drip Irrigation Systems
Everything you need to know about Drip Irrigation Systems
Installing Drip Tubing & Fittings
Drip Main line tubing, micro tubing, compression & barbed fittings
Determine Water Flow Rate
Four simple steps
Water Pressure - How To Measure
Determing Your Household Water Pressure
Winterizing your irrigation system
Drain water from pipes
Connecting to the Water Source
Hose Bibb vs. Electric Solenoid Valve
- Retrofitting Sprinklers for Drip Irrigation
Tips & Tricks
Upgrade Your Drip Hole Punch & Save Time
A clean cut makes it easier
Some drip irrigation hole punches are shaped like a pencil and simply poke a hole as they push through the drip irrigation tubing. They require more force and can slip off of the drip tubing before they make the hole. The Super Punch (shown here) has a squeeze handle and is only $9.90. A less expensive option is our Deluxe Hole Punch which has a sharp, circular cutting edge. It's comfortable, easy on your hands, and costs only $3.60.
A Paper Clip Quickly Cleans a Hole Punch
Insert the wire to clear the tool
A good hole punch will actually cut a tiny circle out of the drip irrigation tubing. The plug of drip irrigation tubing can be removed from the cutting edge of the punch with a paper clip. Push it through the cutting end to clear any plastic debris.
Control Water Flow to Flower Pots With This Little Valve
1/4" Flow Control Valve inserts into micro tubing
If you use a drip irrigation system to water hanging baskets or flower pots, put a 1/4" flow control valve on each pot. You can reduce the drip irrigation flow or shut it off completely. It's handy if the pot is has not yet been planted and you don't want to water it.
Fix Little Holes With a Goof Plug
Doubles as a 1/4" end plug
If you make a mistake and poke a hole in the wrong place on a drip line, insert a goof plug (small barb). If the hole gets worn and leaks a little, pull the plug out and use the large barbed end. Goof plugs are also used to plug the end of 1/4" micro tubing.
Adjust Water Flow to Garden Boxes With a Flow Control Valve
1/2" Valve fits over mainline tubing
These drip irrigation valves are great when you have garden boxes or drip areas that you may want to turn off seasonally. You can reduce the flow or shut it off completely. 1/2" Flow Control Valves are installed just like a compression coupler.
Fix Big Holes With a Coupler
If a goof plug won't do the trick
If you have a hole in a mainline poly pipe that is bigger than a goof plug, a compression coupling is the fitting to use. Make a clean cut and insert the two tubes into each end of the coupler. No glue required.
Threaded End Caps Make Winterizing Easy
Unscrew cap to flush or drain drip tubing
Check hose washers on hose-thread fittings
To ensure water-tight seal
Over time, hose washers can compress or deteriorate, causing fittings to leak. Check garden hoses and fittings for a flexible hose washer. Replace brittle or worn washers. Insert a hose filter washer for a little added filtration in your hose or drip poly tubing. If the fitting still leaks, try adding a second washer. For pipe threads, use Teflon tape.
- Is all 1/2" poly tubing (drip mainline) the same?
The short answer is no. Poly tubing may be called “1/2 inch” by manufacturers and retailers but if you look closely you’ll find that the tubing has specific Outer Diameter (OD) and Inner Diameter (ID) dimensions.
Common OD dimensions are:
.700 inches (called “700") Black fittings
.620 inches (called “620”) Green-ringed fittings
.710 inches (called “710”) Blue-ringed fittings
.580 inches (called “580”) Yellow-ringed fittings
.455 inches called "455") Red-ringed fittings
We carry 700 poly tubing and Compression fittings. We also carry fittings and adaptors for many of the common tubing sizes.
If you want to know the size of your existing drip tubing, read What Size Is My Drip Tubing?
- How far can I run the 1/2” drip poly tubing (mainline)?
The maximum drip mainline run is determined by the flow rate, water pressure, the number of emitters on the line, and distance between the emitters. Our 700 tubing has a maximum flow rate of 240 gallons per hour. We recommend a 20psi or 30psi drip regulator.
For most residential drip irrigation systems using a hose bibb (faucet, spigot, hydrant) as the water supply, follow these guidelines:
Maximum drip mainline run: 500 ft
Maximum emitter output: 240 gallons per hour
Since a typical hose bibb delivers 240 gallons per hour, you can put 240 1 gallon-per-hour emitters on the line (or 480 1/2 gallon-per-hour emitters or 120 2 gallon-per-hour emitters).
This works up to a point. If you run your drip poly tubing over 500 feet, there will be some pressure loss, limiting the number of emitters that you can install. For a maximum length run chart and more details read our tutorial on Installing Drip Tubing and Fittings.
- How far can I run the drip emitter tubing (dripperline)?
The maximum run varies with the size of the tubing and the spacing of the emitters.
Emitter Tubing Guidelines Tubing Size & Emitter Spacing Pressure Compensating Emitters? Max psi Max Run per branch Max Run Total (1/4" is fed from 1/2" mainline) 1/4" Tubing - 6" spacing 1/2 gal/hr No 30 19 ft 200 ft 1/4" Tubing - 12" spacing 1/2 gal/hr No 30 33 ft 400 ft 1/2" Tubing - 12" spacing 1/2 gal/hr Yes 50* 450 ft 1/2" Tubing - 18" spacing 1/2 gal/hr Yes 50* 500 ft 1/2" Tubing - 18" spacing 1 gal/hr Yes 50* 350 ft * We recommend operating at 20 - 30 psi
Pressure Compensating Emitters
- Deliver the stated gph (gallons per hour) even if pressures range is 10-50 psi
- Works well with elevation changes
- Self-flushing to reduce clogging
- Output will vary with changes in pressure & elevation
- Workes best with flat landscapes
- Excellent for gravity-fed drip systems
1/2" Compression Fittings
- Recommended pressure: 10-30 psi
- Max pressure: 60 psi
- How do I add on to my existing drip system?
We have a great selection of drip tubing coupling adapters for varying sizes of drip tubing. They are color coded. The first step is to determine the Outer Diameter (OD) of your tubing.
Common OD dimensions are:
.700 inches (called “700") Black fittings - 700 Compression Coupler
.620 inches (called “620”) Green-ringed fittings - 700 x 620 Compression Adapter
.710 inches (called “710”) Blue-ringed fittings - 700 x 710 Compression Adapter
.580 inches (called “580”) Yellow-ringed fittings - 700 x 580 Compression Adapter
.455 inches called "455") Red-ringed fittings - 700 x 455 Compression Adapter
If you find that your existing tubing is not 700, simply add the appropriate coupling adapter to your order to go from your tubing to 700.
View our Installing Drip Tubing & Fittings tutorial for more details.
- Can I bury my drip tubing?
We do not recommend burying drip tubing in the soil. However, a layer of mulch on top will extend the lifespan of the drip tubing. Buy Drip tubing here.
- I want to install my own drip irrigation system. Where do I start?
- How do I determine my household water pressure?
Please read our tutorial on Determining Your Household Water Pressure.
- How do I determine my water flow rate?
The flow rate is the amount of water flowing through your water supply line. Since drip emitters and micro sprays consume x gallons per hour, it is important to know the flow rate available to feed your emitters. It is measured in gallons per hour (GPH). To determine the flow rate out of your faucet (hose bibb, spigot, hydrant), read our tutorial on Determing Your Flow Rate.
- How do I hook a drip system up to the water supply?
Our Connecting to the Water Source tutorial will outline all the components needed to set up a hose bibb connection or connect to the main water supply.
- Is a filter required?
While a filter is not required, it is highly recommended. Even the cleanest water has small particles in it that can clog drip emitters. Micro sprays are especially susceptible to clogging as the orifices in micro spray components are especially small. Debris can enter a municipal water supply if a mainline breaks or when there is new construction in the area. Well or lake water should always be filtered. Without a filter, you may need to manually take apart emitters to clean them and remove debris that would have been caught by an inexpensive filter. Compare and buy filters.
- Compression Fitting
Fittings used to connect lengths of 1/2" and 3/4" drip tubing. The tubing is simply inserted into the compression fitting. Glue is not required. See also Poly Pipe.
- Female Hose Thread
See Hose Thread
FHT: Female Hose Thread
See also Hose Thread.
- Goof Plug
Also called mistake plugs, goof plugs are used in drip irrigation to plug up small holes in mainline drip tubing. They are also used as end caps in 1/4" drip micro tubing. It is always good to keep a handful of goof plugs on hand.
Abbreviation for Inside Diameter of pipe.
Abbreviation for Outside Diameter of pipe.
An irrigation adapter fitting with a female hose thread connection. A hose washer is required to make a water-tight seal.
- Hose Thread
Officially called "Garden Hose Thread" (GHT), hose threads are found on garden hoses and many irrigation parts and adapter fittings. Generally referred to as "3/4" hose threads" the outer diameter is 1.0625 inches and has a pitch of 11.5 tpi (threads per inch). Hose threads are NOT the same as pipe threads and should never be screwed into pipe threaded fittings.
Male hose threads are found on the outside of a fitting and thread into female hose threads.
Female hose threads are found on the inside of a fitting and accept male hose threads.
Hose threads do not require Teflon tape or pipe dope (like pipe threads), just a hose washer. If you find a water leak with hose threads, it is most likely a worn hose washer. It may be time to replace it. Hose washers are found inside fittings with female hose threads. See also Pipe Thread, Adapter, Swivel, Hose Washer, Teflon Tape
- Hose Washer
Rubber gasket found inside fittings with female hose threads that makes a water-tight seal. See also Hose Thread.
A filter contains a screen that is designed to remove particles from irrigation systems. Filters are critical components in a drip irrigation system. Drip emitters may clog if proper filtration is not provided. Typical screen mesh is 120, 150, and 200 mesh. The greater the number, the smaller the openings in the screen. 200 mesh is recommended for foggers (misters).
- Pressure Regulator
A device that lowers water pressure on the downstream side and maintains a constant operating pressure. Regulators are commonly used in drip irrigation applications as drip tubing and fittings are usually rated to operate at pressures lower than most household water systems. Always install a regulator after a valve and filter. They are not designed to be operated under constant pressure.
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