The 1/2 in. Brass PEX barb x 3/4 in. MHT Chrome Plated Brass Telescoping Anti-Siphon Frost Free Sillcock by Apollo is an innovative sillcock designed to make the installation or replacement of existing sillcock a seamless experience. With its patented telescoping mechanism, this frost-proof hydrant can be installed with to cover depths from 7 in. to 12 in. maximum to provide maximum protection against frozen or burst pipes. This version has a dual connection inlet that can be used as a male thread connection or soldered into place. The telescopic action is achieved by simply twisting the tightening collar counter-clockwise to the desired length as indicated by the laser etched measurement markings on the body. Once the desired length is achieved, simply tighten the collar into place using the proprietary wrench.
Can secured in place using copper crimps, stainless steel pinch clamps or stainless steel crimp sleeves
Most economical piping system available
Maximum working pressure of 200 psi and maximum temperature of 200°F
Chrome-plated brass is corrosion resistant for greater longevity
Always remove hose during freezing conditions
Innovative design telescopes to accommodate custom installations depending on local climate and conditions
Protects against freezing
ASSE 1019 device is designed for use in irrigation systems and outdoor watering and should not be subjected to more than 12 hours of continuous pressure
Protects against backflow and contaminated water flowing into potable water system
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Inlet Diameter (In.)
Outlet Diameter (In.)
Product Depth (in.)
Product Height (in.)
Product Length (in.)
Product Width (in.)
Non-Potable Water,Potable Water
Compatible Pipe Material
PEX x MHT
Maximum Pressure (psi)
Maximum Working Temperature (F)
Product Weight (lb.)
Through Wall Length (in.)
Warranty / Certifications
5 Years: Must be installed per published installation instructions.
Questions & Answers
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May 22, 2021
Assembled at factory incorrectly
This item was either a returned item that was not returned as assembled or left the factory assembled incorrectly. Once installed, I tested only to find it leaking out of the top valve. I removed, cleaned and reinstalled it about 5 times before almost giving up entirely and then through to check some online videos. It soon dawned on me that the little moving plug inside was installed upside down from the get go.
I uninstalled the plastic value unit a 6th time, turned the little plug the right way and installed it and now it works fine. At this point however, the plastic valve assembly was so beat up that I had to buy a repair kit to get it working.
Of course, I put it together and it works perfectly now, but not without going nuts for 30 minutes, adding an additional hour long trip back and forth to the hardware store and more cost to an already expensive piece of hardware, that is now permanently installed and is not returnable without tearing out the plumbing work already done.
Someone is sleeping at the switch. Consider this a wake up call.