{"product_id":"hunter-hdl-04-18-250-cv-hdl-dripline-cv-0-4-gph-18-250","title":"Hunter HDL Dripline — HDL-04-18-250-CV, 0.4 GPH (18\" spacing, 250 ft)","description":"\u003cp\u003eHunter HDL Dripline HDL-04-18-250-CV is a pressure‑compensating drip tubing with an integrated check valve (CV), engineered to deliver uniform low‑volume irrigation for slopes, planting beds, and subsurface installations. Each emitter provides a steady 0.4 GPH (approximately 1.5 L\/hr) output to maintain even soil moisture and reduce runoff.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow \u0026amp; spacing:\u003c\/strong\u003e 0.4 GPH (1.5 L\/hr) emitters at 18\" (45 cm) spacing for consistent, low‑volume watering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck valve:\u003c\/strong\u003e Built‑in check valve prevents line drainage — ideal for sloped or below‑grade installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil length:\u003c\/strong\u003e 250 ft (≈75 m) coil length suited for medium‑length runs and planted bed layouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTubing specs:\u003c\/strong\u003e 16.76 mm OD × 14.22 mm ID durable tubing designed for long service life and resistance to wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating requirements:\u003c\/strong\u003e Recommended operating range 1–4.2 bar (100–420 kPa); minimum filtration 120 mesh (125 μm).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty \u0026amp; docs:\u003c\/strong\u003e Manufacturer warranty typically 5 years with additional coverage for environmental stress cracking; detailed submittal and product overview sheets available.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDesigned as a high‑efficiency upgrade to conventional PLD dripline, Hunter HDL combines pressure compensation with reliable anti‑drain protection for professional irrigation projects. Use standard HDL fittings and refer to the HDL product submittal and micro irrigation overview for installation diagrams, CAD files, and performance charts.\u003c\/p\u003e","brand":"Hunter","offers":[{"title":"Default Title","offer_id":29685958934588,"sku":"HDL0418250CV","price":120.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1987\/5531\/products\/hdl-04-250-cv_001_rt.jpg?v=1570220214","url":"https:\/\/www.sprinklersupplystore.com\/products\/hunter-hdl-04-18-250-cv-hdl-dripline-cv-0-4-gph-18-250","provider":"Sprinkler Supply Store","version":"1.0","type":"link"}