Dramm - Nozzle Mounting Inserts and Pipe Nipples

Brand: Dramm

Nozzle Mounting Inserts and Pipe Nipples

Every Dramm irrigation nozzle that screws in uses a 3/8 in Whitworth thread, not NPT, and these are the fittings that put that thread where the nozzle has to go. The assembly insert is a threaded gasket: drill a 7/16 in hole in schedule 40 PVC, aluminum or galvanized pipe, push the insert in, then screw the nozzle down so it expands the insert against the pipe wall and seals, with no tapping. The two pipe nipples carry the same 3/8 in Whitworth thread up onto a 1/2 in riser instead, one screwing onto a threaded riser and one cementing onto a plain one, for beds where an overhead line is unwanted or impossible. The butterfly adaptor is the outlier here: it converts a 3/8 in Whitworth port to a 6mm press fit connection rather than mounting a nozzle to pipe.

The choice is really a choice of what you are mounting to. If the nozzle goes straight into an overhead pipeline, use the assembly insert, because one 7/16 in hole per nozzle is far quicker than drilling and tapping every hole, and it is rated to 50 psi. Two things rule it out: it will not seal in schedule 80 PVC, where the wall is too thick for the insert to expand against, and Dramm does not permit it with High Pressure Misty Mist nozzles. Both of those have to be drilled and tapped instead. If you are coming up on a riser rather than hanging pipe overhead, use a nipple: the threaded pipe nipple screws onto a 1/2 in NPT threaded PVC riser, the slip fit pipe nipple cements over a plain 1/2 in PVC riser, and both present the same 3/8 in Whitworth thread at the top. The butterfly adaptor is for the case where the port is 3/8 in Whitworth but what you are connecting is 6mm press fit.

Specifications

Configurations

Key Features

• 3/8 in Whitworth is the shared thread across Dramm Pin-Perfect, Nifty, Misty Mist, Drop style and the threaded JetRain and JetFog nozzles
• Assembly insert seals a nozzle into a plain 7/16 in drilled hole, so a pipeline is laid out without tapping every hole
• The nozzle itself expands the insert as it is screwed down, which is what forms the seal; rated to 50 psi
• Assembly insert works in schedule 40 PVC, aluminum pipe and galvanized pipe
• Threaded pipe nipple screws onto a 1/2 in NPT PVC riser; slip fit pipe nipple cements onto a plain 1/2 in PVC riser
• Riser mounting removes the overhead line where headroom, structure or crop handling rules one out
• Butterfly adaptor takes the same 3/8 in Whitworth thread out to a 6mm press fit
• Clamp the pipe and drill on a press or with an alignment jig; round, square holes are what let the insert seal

Ideal Applications

• Overhead watering lines in schedule 40 PVC where each nozzle mounts through a drilled hole
• Aluminum or galvanized overhead pipelines
• Riser mounted nozzles on benches and beds with no overhead pipe
• Adding nozzles to an existing pipeline without bringing a tap to site
• Threaded JetRain and JetFog nozzles going into rigid PVC
• Adapting a 3/8 in Whitworth port to a 6mm press fit connection

Order these with the nozzles they carry, Pin-Perfect, Nifty, Misty Mist and the threaded JetRain and JetFog, add the DT-N drill tap for schedule 80 pipe and high pressure work, and pair overhead installations with Dramm No-Drip Risers, No-Drip Extension Check Valves and Run-Out Valves to control drip.