Hunter G835 - Installation and Operation; Pipe Connections - All Models


Typical NPT or BSP
Swing Joint Fitting
with tapered threads
Typical ACME
Swing Joint Fitting
with O-ring seal
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

Typical NPT or BSP
Swing Joint Fitting
with tapered threads
Typical ACME
Swing Joint Fitting
with O-ring seal


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
conguration in the golf course irrigation market. Do Not use NPT or BSP threaded ttings to connect piping to
TTS rotors. Acme threads are not compatible with NPT or BSP ttings. Acme threaded ttings 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tting.
 • Approvedexibleswingjointswitha1½inchmaleAcmeoutlettting.
 • Replacethenalttingoftheexistingswingjointwitha1½inchmaleAcmeoutlettting(ttingmustbethe
same brand as swing joint).
 • UsetheappropriateHunterAcmeAdaptertting.TheseareavailablefromHunterdistributorsinvariousNPT
andBSPsizes.(Teon™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tting
 • G870Seriesrotors–1¼inchswingjointwitha1½inchmaleAcmeoutlettting
 • G880Seriesrotors–1½inchswingjointwitha1½inchmaleAcmeoutlettting
 • G990Seriesrotors–1½inchswingjointwitha1½inchmaleAcmeoutlettting
Do Not useTeon™tape,PVCcementorotherthreadsealantmaterialstoconnecttheTTSrotortotheAcme
tting.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 tting. Other lubricants can deteriorate the tting and cause leakage.
Thread the Acme tting into the G800 Series rotor clockwise until it bottoms out (no further rotation is possible). Then
turn the tting in reverse (counter-clockwise) ½ turn. The tting will still seal around the O-Ring and this loosened
position will allow minor rotation of the rotor’s body after installation.
TYPICAL NPT OR BSP
SWING JOINT FITTING
WITH TAPERED THREADS
TYPICAL ACME SWING
JOINT FITTING WITH
O-RING SEAL
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