Drip Irrigation Installation: 8 Things to Know Before You Start
Jun 15th 2026
Scotchlok Connectors are the industry standard for creating fast, secure, and reliable electrical connections in your irrigation system. Designed specifically for joining small gauge wires, these connectors easily splice two or three 18-gauge wires together. A solid electrical connection is critical when wiring an automated controller to your underground irrigation valves, ensuring your system fires perfectly every time.
What sets these wire nuts apart is their ease of use and durability in harsh environments. Thanks to the internal insulation displacement contacts, there is no need to strip the wires before joining them. Furthermore, the connectors are filled with a moisture-resistant sealant that protects the splice from water, dirt, and corrosion—making them ideal for use in damp valve boxes.
Detailed specifications for system wiring.
| Specification | Details |
|---|---|
| Product Type | Moisture-Resistant Wire Connector |
| Wire Gauge Compatibility | 18 AWG |
| Capacity | 2 or 3 Wires |
| Connection Type | Insulation Displacement (No Stripping) |
| Application | Low Voltage Irrigation / Valve Solenoids |
Follow these steps to create a perfect waterproof splice.
Step 1: Insert Wires
Without stripping the insulation, push the ends of your 18-gauge wires completely into the open ports of the connector.
Step 2: Check Placement
Look through the clear plastic body of the connector to verify the wires are fully inserted and touching the back wall.
Step 3: Crimp Securely
Using pliers or a dedicated crimping tool, squeeze the colored cap down firmly until it sits flush with the connector body, locking the wires and releasing the gel sealant.
How often should I check my Scotchlok Connectors during the summer watering season?
You should inspect your Scotchlok Connectors at the beginning of summer to ensure the seal is intact. A secure connection prevents electrical failures during peak watering months when your system runs most frequently.
Summer heat can put a lot of strain on automated systems. Taking 5 minutes to pop open your valve box and visually inspect the wiring can save you from underwatered plants during a heat wave.
Do I need to strip the wires before using a Scotchlok Connector?
No, you do not need to strip the wires before using a Scotchlok Connector. They feature an internal insulation displacement contact that pierces the wire jacket when crimped, creating a secure electrical bond automatically.
This feature saves a significant amount of installation time and prevents you from accidentally nicking or breaking the thin copper strands while trying to strip them.
How many wires can fit into one Scotchlok Connector?
Each Scotchlok Connector is designed to securely join either two or three 18-gauge wires together. This makes them perfect for connecting a single controller wire to multiple valve solenoids if needed.
When wiring irrigation valves, you will typically use one connector for the common wire connection and one for the individual station power wire.
Are Scotchlok Connectors waterproof for underground valve boxes?
Yes, Scotchlok Connectors are highly moisture-resistant. They are pre-filled with a protective silicone gel that wraps around the spliced wires, keeping out water, dirt, and corrosion even in damp underground valve boxes.
While they provide excellent protection against ambient moisture, splashing, and dirt, they are not designed to be continually submerged in standing water for extended periods. Ensure your valve box has adequate drainage.
Please note the requirements for this unit:
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