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Pump Start Relays for Irrigation: Wiring and Safety Checklist

Why a Relay Exists Controllers output low-voltage signals; pumps need high-voltage contactors. A pump start relay bridges that gap safely. Wiring Discipline Follow the pump and controller manuals exactly. Label commons, MV, and pump terminals to avoid cross-talk during service. Safety Hardware Lockable disconnects, proper grounding, and strain relief on flex protect technicians and homeowners. […]

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Backflow Preventers for Home Irrigation: Types and Testing Basics

Protecting Potable Water Irrigation systems can draw fertilizer or debris back into drinking water during pressure reversals. Backflow preventers stop that pathway. Common Residential Types Pressure vacuum breakers (PVB) are common where code allows; reduced pressure (RPZ) assemblies add protection where hazards are higher. Testing and Tags Most jurisdictions require annual certification. Keep tags on […]

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PVC Schedule 40 vs Polyethylene Pipe for Irrigation Mains

Where PVC Shines Schedule 40 PVC is rigid, easy to solvent weld, and ideal for straight mainlines with predictable trenching. Where Poly Wins Polyethylene handles curves, rocky soils, and quick repairs with barbed fittings and clamps—common on laterals to valves. Depth and Code Follow local depth tables and separation from other utilities. Mark depth on […]

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Solenoid Valve Troubleshooting: Clicks, Ohms, and Debris

Start at the Controller Confirm the station output energizes when commanded. Intermittent faults may be wiring nuts, cut common wires, or corroded connectors. Voltage and Ohms Measure AC voltage at the solenoid leads during operation. Compare coil resistance to manufacturer ranges—shorts and opens are common after lightning seasons. Mechanical Issues Debris under the diaphragm or […]

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Hydrawise Predictive Watering: Practical Tips for Accurate Schedules

Teach the Controller Your Landscape Accurate plant type, sun exposure, and sprinkler head selections change ET math. Garbage inputs produce garbage run times—even with good weather data. Weather Sources Choose a reliable station near the property. Rural sites may need a personal weather device for wind and rainfall. Flow and Overrides If you add flow […]

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Rain Bird vs Hunter Rotors: Picking the Right Gear-Driven Sprinkler

Brand Basics Both brands offer contractor-grade rotors with tool-free arcs and color-coded nozzles. Availability and local support often drive the final pick. Nozzle Ecosystem Stock the nozzle sets you actually service. Carrying both brands’ rebuild kits prevents a single failed head from delaying a job. Common Failure Modes Seal wear, drive mechanism grit, and cracked […]

Hunter PS Ultra HE spray sprinkler head in action with colorful flowers in background

PS Ultra Upgrade: Faster Installs, Improved Efficiency with Factory-Installed HE Nozzles

Hunter PS Ultra Sprinkler Bodies are now available with factory-installed Pro High-Efficiency Nozzles — helping contractors install faster while improving coverage and water efficiency. Matched precipitation reduces water waste and callbacks, all in the familiar slim-line design that fits tight spaces. → Shop Hunter PS Ultra HE Sprinkler Bodies What Changed with the PS Ultra […]

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MP Rotator vs Traditional Sprays: Coverage, Wind, and Efficiency

Why Rotators Behave Differently MP rotators throw larger droplets with slower application rates, cutting wind drift and runoff on tight soils. When Sprays Still Win Narrow strips, odd polygons, or very low pressure zones may fit classic sprays better until pressure issues are fixed. Converting a Zone Swap all nozzles together, adjust run times for […]

Terms & Conditions of Sale

PLEASE READ THIS DOCUMENT CAREFULLY. IT CONTAINS VERY IMPORTANT INFORMATION REGARDING YOUR RIGHTS AND OBLIGATIONS, INCLUDING LIMITATIONS AND EXCLUSIONS THAT MIGHT APPLY TO YOU.1. Agreement Scope: When you order products from the Big Irrigation Supply website, you agree to these terms. The supplier can change these terms without notice, and the most current version will be on the website.2. Order Acceptance and Cancellation: The supplier may accept, decline, or limit your order for any reason after receiving it. If your order is canceled after your card is charged, you will be refunded. Minimum order amounts apply and can change without notice. Customer cancellations will incur a credit card charge up to 4%.3. Pricing: Prices are subject to change and do not include taxes. Any taxes applicable will be added to the price, and you must either pay them or provide a tax exemption certificate.4. Payment Terms: Full payment is required before shipping, and you can pay online via credit card.5. Shipping and Risk: Ownership of the products transfers to you either when the products leave the supplier’s location or when they are delivered to your address, depending on the delivery method. You are responsible for shipping costs and must inspect deliveries for damage or discrepancies upon receipt.6. Warranties and Returns: Products are generally covered by the manufacturer’s warranty, details of which are provided in the product description or manufacturer’s website. Returns require prior authorization and must be made within specific time frames. A restocking fee may apply of up to 35%. Non-returnable items from Big Irrigation Supply specifically include all landscape lighting fixtures and transformers, as well as irrigation commercial controllers like MC-E and ACC2 models. Additionally, any items that are not regularly stocked or are special order items cannot be returned.7. Intellectual Property: The supplier owns any content, inventions, or intellectual property developed during the term of your agreement with them.8. Advertising and Liability: The supplier is not responsible for inaccuracies in product descriptions provided by their suppliers, nor for typographical or pricing errors. They also disclaim all implied warranties and limit their liability for any damages arising from the use of their site to the amount you paid for the products.9. Indemnification: You must defend and indemnify the supplier against any claims or damages arising from your use of the products, or any breach of these terms.10. Legal: The agreement is governed by the laws of Texas, and any disputes will be handled in Collin County, Texas, without a jury trial.11. Force Majeure: The supplier is not liable for delays or failures in delivery caused by circumstances beyond their control, such as natural disasters or labor strikes.12. Miscellaneous: If part of these terms is found to be unenforceable, the rest still applies. Provisions that by their nature should survive the termination of the agreement will do so.