The Netafim Regulator Spring Cartridges offer a brilliant, cost-effective way to adapt your existing irrigation system without having to completely rebuild your manifold. Designed exclusively for Netafim Adjustable Pressure Regulators, these interchangeable cartridges allow you to precisely alter the downstream output pressure of your system. Instead of cutting pipe and unthreading a massive 2-inch commercial regulator when your crop's watering needs change, simply unscrew the top cap and swap out the internal springs!
Available in a wide variety of pressure ratings—including 9, 12, 20, 35, 50, and 65 PSI—these cartridges make it easy to transition a zone from heavy-duty sprinklers to delicate, thin-walled drip tape. Important Sizing Note: Different Netafim regulators require a different number of springs to function correctly. The 3/4" regulator requires 1 spring, the 1 1/2" regulator requires 2 springs, and the massive 2" regulator requires 4 springs. You must replace all springs inside your regulator simultaneously with matching PSI cartridges for the unit to regulate pressure accurately.
Detailed specifications for system planning.
| Specification | Details |
|---|---|
| Product Type | Pressure Regulator Replacement Spring Cartridge |
| Available Pressures | 9, 12, 20, 35, 50, or 65 PSI |
| Compatibility | Only fits Netafim Adjustable Pressure Regulators (3/4", 1.5", 2") |
| Brand | Netafim |
| Netafim Regulator Size | Number of Springs Required per Unit |
|---|---|
| 3/4" Netafim Regulator | 1 Cartridge |
| 1 1/2" Netafim Regulator | 2 Cartridges |
| 2" Netafim Regulator | 4 Cartridges |
Change out your springs safely and correctly in the field.
Step 1: Turn Off Water & Depressurize
Close the main water supply or the upstream valve leading to the regulator. Briefly open a downstream flush valve to completely relieve the water pressure inside the manifold.
Step 2: Remove the Regulator Cap
Firmly grip the large threaded cap on top of the Netafim regulator and unscrew it counter-clockwise to expose the internal spring cavity.
Step 3: Extract Existing Springs
Pull the existing spring cartridges straight up and out. Pro-Tip: Factory-installed springs are often seated very tightly. You may need to use long-handled channel locks or vice grips to pull them out.
Step 4: Insert New Springs & Recap
Drop the new spring cartridges into the open cavities, ensuring they seat properly. Make sure you replace all the springs in the unit. Inspect the main O-ring, then hand-tighten the cap back onto the regulator securely.
How many spring cartridges do I need to buy?
The quantity depends entirely on which Netafim regulator you own.
The 3/4" regulator requires 1 spring. The 1 1/2" regulator requires 2 springs. The 2" regulator requires 4 springs. You must purchase the correct quantity, as they are sold individually.
Do I need to replace all the springs at once?
Yes, absolutely. If your regulator requires multiple springs (like the 1.5" or 2" models), you must replace all of them simultaneously with matching PSI cartridges.
Mixing and matching different PSI ratings inside the same unit, or leaving a slot empty, will result in complete failure of the internal diaphragm and inaccurate pressure regulation.
Why are the existing springs so hard to remove?
The original factory-installed springs are pressed into place to survive harsh shipping and heavy commercial pressure spikes, making them very tight.
Do not be afraid to use a pair of long-handled channel locks or vice grips to firmly grab the top of the old cartridge and pull it out.
Will these fit my Senninger or standard inline regulator?
No, these replacement cartridges are exclusively engineered to fit the unique internal cavities of Netafim Adjustable Pressure Regulators.
Standard inline regulators from other brands are permanently sealed units and their internal springs cannot be accessed or changed.
Please review before purchasing:
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