The Series DTFO Variable-Area Flowmeter for Liquids measures oil rates with ±2% of full-scale accuracy at an affordable price. Durable metal construction ensures great reliability and the strength to withstand system pressures of up to 3000 psig (200 bar). Available in 1/4″, 1/2″ and 1″ connections for a wide variety of applications. Comes calibrated for horizontal in line mounting.