The fitting that feeds water into Sumi Soaker tubing. Every Sumi Kit and Bed Add-On Kit includes one; buy it here as a spare or a replacement.
- Where water enters the tube. The barb end takes the Fabric Filter and the tubing. The threaded end connects to your water.
- No tools needed. Installs by hand.
- Matched to your tubing. R-Wide and Mark II versions have different threads and don't cross over. Pick the one that matches your tubing.
What's included
One Sumi Soaker Tube Starter Connector in the version you pick. The Fabric Filter and the 1 in threaded connector are sold separately or together in the Bed Add-On Kit.
Free shipping on orders over $25 in the Lower 48 · Most orders ship within 24 hours
Other Sumi parts
-
1 in Threaded Connector
Adapts the starter's G1 parallel threads to standard 1 in NPT.
$4.50 -
Fabric Filter
Fits on the starter's barb, between the connector and the tubing.
From $4.50Choose -
Bed Add-On Kit
The starter connector, threaded connector, filter and end stopper for one run.
From $14.50Choose -
Garden Hose Connector
Connects the starter to a garden hose. With or without a regulator.
From $35.50Choose -
Mainline Connector
Tees the line off a 1 in PVC or poly mainline.
From $55.00Choose
Specs at a glance
- Fits
- R-Wide or Mark II tubing (pick the matching version)
- Thread standard
- G1 parallel pipe thread, JIS B0202 (same as ISO 228 G1 / BSPP)
- Thread form
- Straight (not tapered), 55° Whitworth, 11 TPI
- R-Wide threads
- G1-1/2 external and G1 internal (parallel, BSPP)
- Mark II threads
- G1 external (parallel, BSPP)
- With US 1 in NPT
- Somewhat compatible. The 1 in threaded connector bridges the gap and minimizes leaks.
- Tube end
- Barb that takes the Fabric Filter and the tubing
- Install
- By hand, no tools
- Included with
- Every Sumi Kit and Bed Add-On Kit
Thread spec: Sumika Agritech, JIS B0202:1999.
Questions growers ask
Still not sure? Email hello@moderngrower.co or call 877-850-1555.
Do I need to buy this separately?
Not to get started. Every Sumi Kit and Bed Add-On Kit includes one. Buy it here as a spare, to replace a damaged one, or for an extra run when you already have the other parts.
R-Wide or Mark II version?
Match it to your tubing. The two versions have different threads and don't cross over. Not sure which tubing you have? Email us your order number and we'll tell you.
Will it thread onto my US fittings?
Somewhat. Sumi starter connectors use G1 threads (equivalent to BSPP): straight, parallel, 55° and 11 threads per inch. US 1 in NPT is tapered, 60° and 11.5 threads per inch, so the two thread together only partway and don't seal well. Our 1 in threaded connector is designed to bridge that thread gap and minimize leaks: male-to-male for R-Wide, male-to-female for Mark II. It comes in every kit and Bed Add-On Kit.
Can I connect it without the adapter?
You can thread it onto a 1 in NPT fitting directly, but expect some leaking at the joint. Wrapping the threads with Teflon tape reduces leaks. For the tightest seal, use the 1 in threaded connector.
Where does the Fabric Filter go?
On the barb of the starter connector, between the connector and the tubing. Water passes through it right before it enters the tube.
How does it connect to a hose or mainline?
Add a Garden Hose Connector to run off a hose bib, or a Mainline Connector to tee off a 1 in PVC or poly mainline. Both are sold with or without a pressure regulator.
Main US source
Modern Grower is the main US source for Sumi Soaker (Sumisansui) tubing from Sumika Agritech.
Support from people who use it
Questions go to our team, with a direct line to the manufacturer. hello@moderngrower.co · 877-850-1555
Ships from the US
In stock, with most orders out within 24 hours. Free shipping over $25 in the Lower 48.
About the Sumi Soaker Tube Starter Connector
The Sumi Soaker Tube Starter Connector is the fitting at the head of every run of Sumi Soaker (Sumisansui) overhead irrigation tubing. Its barb end takes the Fabric Filter and the tubing, and its threaded end connects back to your water supply. It installs by hand with no tools.
R-Wide and Mark II versions
The R-Wide starter has G1-1/2 external and G1 internal threads (parallel, BSPP). The Mark II starter has G1 external threads (parallel, BSPP). The two aren't interchangeable, so match the connector to your tubing.
Connecting to US fittings
Sumi starter connectors use G1 threads (JIS B0202, the same as ISO 228 G1 or BSPP): straight, parallel threads with a 55° angle and 11 threads per inch. US 1 in NPT threads are tapered, with a 60° angle and 11.5 threads per inch, so the two are only somewhat compatible. Teflon tape reduces leaks, but the 1 in threaded connector, included in every Sumi Kit and Bed Add-On Kit, is designed to bridge the thread gap and minimize leakage: male-to-male for R-Wide and male-to-female for Mark II. From there, a Garden Hose Connector or Mainline Connector ties the line into your water.