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Irrigation Product Listings & Reviews
Weathermatic 11000CR Series Valve
This is Weathermatic's top of the line "plastic" valve. (These are very good valves!) Mainly used by park districts, golf courses, schools and other large landscapes that are expected to last a long time and have professional management.
- 10 year warranty
- 200 PSI rating
- Flexing, dual ported diaphragm to eliminate need for filter and screens (the idea here is that dirt "flexes" through the holes rather than plugging them)
- Reverse flow design (reverse flow reduces stretching of the diaphragm which makes it hold up better)
- Normally closed
- Works at very low flows, good for drip systems
- Contamination resistant.
- Non-corrosive exhaust orifice
- S24B solenoid with special corrosion protection coating on actuator
- Glass-filled body and cover with stainless steel cover bolts and mating brass body inserts (glass filled is the strongest type of plastic, it seems to hold up about as well as brass in most situations)
- Shock cone (reduces water hammer)
- Brass, non-rising flow control
- Easy to use manual bleed lever, internal bleed (Used to manually open the valve without electricity. Internal bleed means it doesn't spit out water when used.)
- XPR pressure regulator - do not use for flows under 10 GPM. With this option the valve will regulate the downstream pressure to a desired maximum level. Lets say your irrigation mainline pressure is 100 PSI and you want to operate spray heads on the valve circuit controlled by this valve. At 100 PSI the spray heads would blow apart. With this option the valve can be set so that it will always keep the downstream pressure at 40 PSI or less. Like all pressure regulators the outlet pressure needs to be set at least 15 PSI lower than the inlet pressure for the regulator to work accurately. So if your mainline pressure is 45 PSI and you set the outlet for 40 PSI it won't work very well.
- Non-potable alert solenoid. This solenoid is purple colored and has a warning printed on it that the water in the valve is not potable. Irrigation systems that use recycled water must have warnings so that a worker doesn't decide to take a nice long drink from the old stagnant water he finds in the valve when he takes it apart to work on it. Personally, having worked on numerous valves, I can't say as the water that comes out of any of them during maintenance is something I would want to drink!
- Chloramine resistant Albino Rhino Diaphragm. In case you have super-chlorinated water I guess. This feature gets my strange name award.
This is a very good quality valve, with excellent features. Weathermatic only sells to professional installers, so I'm going to assume you have a pro who will explain the features to you. If your pro tells you it's a great valve, I'm agreeing with him. 10-year warranty, 200 PSI rating, etc. Compare the features with other valves and you can see that this one is top-of-the-line. Of course, it has a top-of-the-line price also!
Manufacturer's Performance Data:
|Flow in GPM||0-4||6||8||10||15||20||25||30||35||40||45||50||55||60||70||80||90||100||110||120||130|
|PSI Loss for 1" valve||1.2||1.4||1.6||1.7||2.0||3.3||3.0||4.3||6.0||7.7||9.5||11.5|
|PSI Loss for 1 1/2" valve||1.3||1.6||1.9||2.4||3.0||3.8||4.6||5.6||6.7||9.5||13.0|
|PSI Loss for 2" valve||2.3||2.4||2.6||2.7||2.9||3.3||3.4||4.2||5.2||6.7||7.7||8.8|
Text and Images by Jess Stryker unless noted. Copyright © Jess Stryker, 1997-2011. All rights reserved.