VICTOR GRF400 FLOWMETER REGULATOR The GRF400 series cylinder flow meter regulator is a budget-friendly and compact flowmeter regulator specifically designed for light duty applications. It is suitable for use with Argon, Helium, and Carbon Dioxide (with a 20% duty cycle for CO2). It features a durable Lexan flow-tube that can withstand impacts, a precise needle valve for accurate flow control, and a flow-tube cover that is integrated into a single piece. It is available with or without a 3 m (10 ft.) hose for added convenience. The outlet connection is 5/8"-18 RH(F), while the inlet connection is CGA 580. Feature: Argon, Argon/ CO2, Helium Impact resistant Lexan flow-tube Precision needle valve One piece flow-tube cover Available with or without 3 m (10 ft.) hose 5/8"-18 RH(F) outlet connection CGA 580 inlet connection Regulator Options: 0781-2701 - GRF400-580 Flowmeter Regulator 0781-2702 - GRF400-580 Flowmeter Regulator w/ 3 m (10 ft.) Hose