AALBORG INSTRUMENTS & CONTROLS

20 Corporate Dr, Orangeburg, New York, 10962, USA

VB Precision Barstock Valves

Barstock Metering Valves MFV™

Design Features

virtually free of hysteresis ("see-sawing")
bubble tight shutoff
straight (180°) or 90° flow patterns
available in brass or 316 stainless steel
sixteen turns to full open
up to 21.5 SLPM (air) or 650 mLPM (water)

Designed for controlling very low flowrates of liquids and gases, MFV™ Barstock valves are available in six conveniently overlapping orifice-needle sizes. Offered in straight (T) and 90 degree (L) flow patterns, the MFV™ Barstock Valve includes a “non-rising stem” design, it’s unique non-rotating needle is cylindrical with a precision ground tapered metering surface. The needle moves in a rectilinear fashion which accounts for its desirable sixteen- turn high resolution attribute. Hysteresis is virtually eliminated due to the needle design and the closely fitting fine thread on its adjustment plunger. The valve body is precision machined chrome plated brass or type 316 stainless steel.

SPECIFICATIONS

VALVE STEM sixteen turns, non-rising type

MAXIMUM OPERATING PRESSURE 500 psig (3792 kPa)

MAXIMUM OPERATING TEMPERATURE 180°F (82°C) - brass valves; 250°F (121°C) - 316 stainless steel valves

MATERIALS OF CONSTRUCTION

BODY chrome plated brass or 316 stainless steel

VALVE NEEDLE 316 stainless steel

ORIFICE 316 stainless steel with PTFE liner

O-RINGS PTFE and Buna-N standard with brass valves; PTFE and Viton® standard with 316 stainless steel valves; optional Viton®, PTFE/Kalrez®, EPR

CONNECTIONS 1/8 inch female NPT

VITON® and KALREZ® are registered trademarks of DuPont Dow Elastomers

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