Installation And Operation; Pipe Connections - All Models - Hunter G835 Owner's Manual

iNSTAllATioN ANd opERATioN

PiPe ConneCTionS – All ModelS
all tts rotors have a 1½ inch acme threaded inlet. acme inlet threads have become the preferred thread
configuration in the golf course irrigation market. do Not use npt or bsp threaded fittings to connect piping to
tts rotors. acme threads are not compatible with npt or bsp fittings. acme threaded fittings and swing joints are
available from your local irrigation supply company. Following are the available options for connecting tts rotors to
the irrigation system piping:
• PVC swing joints with a 1½ inch male Acme outlet fitting.
• Approved flexible swing joints with a 1½ inch male Acme outlet fitting.
• R eplace the final fitting of the existing swing joint with a 1½ inch male Acme outlet fitting (fitting must be the
same brand as swing joint).
• U se the appropriate Hunter Acme Adapter fitting. These are available from Hunter distributors in various NPT
and BSP sizes. (Teflon™ tape or PVC cement must be used between the connecting NPT or BSP threads)
Following are the minimum recommended swing joint sizes for tts rotors. However, follow your Irrigation
consultant's recommendations where applicable:
• G835 Series rotors – 1 inch swing joint with a 1½ inch Acme outlet fitting
• G870 Series rotors – 1¼ inch swing joint with a 1½ inch male Acme outlet fitting
• G880 Series rotors – 1½ inch swing joint with a 1½ inch male Acme outlet fitting
• G990 Series rotors – 1½ inch swing joint with a 1½ inch male Acme outlet fitting
do Not use Teflon™ tape, PVC cement or other thread sealant materials to connect the TTS rotor to the Acme
fitting. If needed, a small amount of Dow Corning™ #111 Valve Lubricant or pure petroleum jelly like Vaseline™
can be used around the o-ring on the acme fitting. other lubricants can deteriorate the fitting and cause leakage.
thread the acme fitting into the g800 series rotor clockwise until it bottoms out (no further rotation is possible). then
turn the fitting in reverse (counter-clockwise) ½ turn. the fitting will still seal around the o-ring and this loosened
position will allow minor rotation of the rotor's body after installation.
3
typIcal npt or bsp
Typical NPT or BSP Typical NPT or BSP
sWIng joInt FIttIng
Swing Joint Fitting Swing Joint Fitting
WItH tapered tHreads
with tapered threads with tapered threads
typIcal acMe sWIng
Typical ACME Typical ACME
joInt FIttIng WItH
Swing Joint Fitting Swing Joint Fitting
o-rIng seal
with O-ring seal with O-ring seal