Check the listing for details. Netafim Self Piercing Pressure Compensating Emitters W/ Internal Check Valve-100. Condition: New. Listed at 44.50 USD. Netafim Self Piercing Pressure Compensating Emitters w/ Internal Check Valve - 1.0 GPH (Black) 100 Units Per Order Pressure Compensating Drippers The Netafim Self Piercing Emitters have a sharp barb, making them easy to install, no tools required. These emitters have a 1.74 PSI internal check valve that helps prevent low emitter drainage holding back up to a 3.9 ft column of water. The anti-siphon operation prevents contaminants from being drawn into the emitter. The Self Piercing Emitters are pressure compensating and deliver the same flow from 10.15 to 58 PSI. Exclusive TurboNet® flow path design regulates flow and provides continuous self-cleaning action during operation. Recommended minimum filtration of 120 mesh. PROVIDE UNIFORM FLOW DISTRIBUTION Pressure Compensating Drippers (PC) developed with advanced pressure compensating technology delivers a uniform flow rate even in areas with difficult topographical conditions. A unique pressure differential mechanism regulates flow and provides self-cleaning action, even while irrigating – for a clog-resistant design and high emission uniformity.Why Pressure Compensating Drippers?Higher and Better Quality Yields: 100% uniformity of water and nutrient delivery over a broad pressure range ensures uniform crop yields and bigger harvests.Clogging Resistance: Continuous self-flushing technology ensure consistent flow-rates and flawless operation – even with harsh water.Easy to Scale: Number of drippers can be easily increased ensuring sufficient water to meet your crop growth rate requirements.Maximum Flexibility: Micro-tubes allow drippers to be positioned exactly where required, and split into several drip outlets if needed.Anit-Drain Mechanism (CNL Feature): Eliminates drainage & refill effect, and improves efficiency during pulse irrigation.