MFV™ Series Metering Barstock Needle Valves

These needle valves are precision-machined from a single piece of material, delivering superior strength and performance for high-pressure and critical flow control applications. Designed for accurate regulation of liquids and gases, these rugged valves are available in various overlapping orifice-needle sizes to accommodate a broad range of flow rates. Engineered for precise control of very low flow rates in liquid and gas applications, the MFV™ metering valves feature a non-rising stem with a non-rotating, precision-ground tapered needle that moves in a true rectilinear motion. The design provides exceptional metering accuracy with sixteen turns from closed to full open, delivering high-resolution adjustment and virtually eliminating hysteresis. The valves provide dependable, bubble-tight shutoff and long service life in laboratory instrumentation, benchtop setups, and OEM flow control systems that require fine flow regulation.

Chrome-plated brass or 316 stainless steel body
Buna-N (brass valves) or Viton® (stainless steel valves) O-rings
316 stainless steel valve needle; 316 stainless steel orifice with PTFE or PCTFE liner
Bubble-tight shutoff
Non-rising valve stem; Virtually free of hysteresis (see-sawing)
Sixteen turns to full open
Max. working pressure: 500 psi
Max. temperature: 180°F (brass) or 250°F (stainless steel)

Item #	Description	Catalog Pg.	Price
Item 98520	1/8" FNPT x 1/8" FNPT Chrome-Plated Brass Straight MFV™ Series Metering Barstock Needle Valve - 0.0005 Cv 101.21/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	101.21/Each Drop Ship
Item 98522	1/8" FNPT x 1/8" FNPT Chrome-Plated Brass Straight MFV™ Series Metering Barstock Needle Valve - 0.001 Cv 101.21/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	101.21/Each Drop Ship
Item 98524	1/8" FNPT x 1/8" FNPT Chrome-Plated Brass Straight MFV™ Series Metering Barstock Needle Valve - 0.0025 Cv 101.21/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	101.21/Each Drop Ship
Item 98526	1/8" FNPT x 1/8" FNPT Chrome-Plated Brass Straight MFV™ Series Metering Barstock Needle Valve - 0.0061 Cv 101.21/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	101.21/Each Drop Ship
Item 98528	1/8" FNPT x 1/8" FNPT Chrome-Plated Brass Straight MFV™ Series Metering Barstock Needle Valve - 0.016 Cv 101.21/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	101.21/Each Drop Ship
Item 98530	1/8" FNPT x 1/8" FNPT Chrome-Plated Brass Straight MFV™ Series Metering Barstock Needle Valve - 0.054 Cv 101.21/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	101.21/Each Drop Ship
Item 98532	1/8" FNPT x 1/8" FNPT Chrome-Plated Brass Straight MFV™ Series Metering Barstock Needle Valve - 0.118 Cv 101.21/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	101.21/Each Drop Ship
Item 98521	1/8" FNPT x 1/8" FNPT Chrome-Plated Brass 90° MFV™ Series Metering Barstock Needle Valve - 0.0005 Cv 103.07/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	103.07/Each Drop Ship
Item 98523	1/8" FNPT x 1/8" FNPT Chrome-Plated Brass 90° MFV™ Series Metering Barstock Needle Valve - 0.001 Cv 103.07/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	103.07/Each Drop Ship
Item 98525	1/8" FNPT x 1/8" FNPT Chrome-Plated Brass 90° MFV™ Series Metering Barstock Needle Valve - 0.0025 Cv 103.07/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	103.07/Each Drop Ship
Item 98527	1/8" FNPT x 1/8" FNPT Chrome-Plated Brass 90° MFV™ Series Metering Barstock Needle Valve - 0.0061 Cv 103.07/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	103.07/Each Drop Ship
Item 98529	1/8" FNPT x 1/8" FNPT Chrome-Plated Brass 90° MFV™ Series Metering Barstock Needle Valve - 0.016 Cv 103.07/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	103.07/Each Drop Ship
Item 98531	1/8" FNPT x 1/8" FNPT Chrome-Plated Brass 90° MFV™ Series Metering Barstock Needle Valve - 0.054 Cv 103.07/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	103.07/Each Drop Ship
Item 98533	1/8" FNPT x 1/8" FNPT Chrome-Plated Brass 90° MFV™ Series Metering Barstock Needle Valve - 0.118 Cv 103.07/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	103.07/Each Drop Ship
Item 98534	1/8" FNPT x 1/8" FNPT Stainless Steel Straight MFV™ Series Metering Barstock Needle Valve - 0.0005 Cv 166.21/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	166.21/Each Drop Ship
Item 98536	1/8" FNPT x 1/8" FNPT Stainless Steel Straight MFV™ Series Metering Barstock Needle Valve - 0.001 Cv 166.21/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	166.21/Each Drop Ship
Item 98538	1/8" FNPT x 1/8" FNPT Stainless Steel Straight MFV™ Series Metering Barstock Needle Valve - 0.0025 Cv 166.21/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	166.21/Each Drop Ship
Item 98540	1/8" FNPT x 1/8" FNPT Stainless Steel Straight MFV™ Series Metering Barstock Needle Valve - 0.0061 Cv 166.21/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	166.21/Each Drop Ship
Item 98542	1/8" FNPT x 1/8" FNPT Stainless Steel Straight MFV™ Series Metering Barstock Needle Valve - 0.016 Cv 166.21/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	166.21/Each Drop Ship
Item 98544	1/8" FNPT x 1/8" FNPT Stainless Steel Straight MFV™ Series Metering Barstock Needle Valve - 0.054 Cv 166.21/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	166.21/Each Drop Ship
Item 98546	1/8" FNPT x 1/8" FNPT Stainless Steel Straight MFV™ Series Metering Barstock Needle Valve - 0.118 Cv 166.21/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	166.21/Each Drop Ship
Item 98535	1/8" FNPT x 1/8" FNPT Stainless Steel 90° MFV™ Series Metering Barstock Needle Valve - 0.0005 Cv 169/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	169/Each Drop Ship
Item 98537	1/8" FNPT x 1/8" FNPT Stainless Steel 90° MFV™ Series Metering Barstock Needle Valve - 0.001 Cv 169/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	169/Each Drop Ship
Item 98539	1/8" FNPT x 1/8" FNPT Stainless Steel 90° MFV™ Series Metering Barstock Needle Valve - 0.0025 Cv 169/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	169/Each Drop Ship
Item 98541	1/8" FNPT x 1/8" FNPT Stainless Steel 90° MFV™ Series Metering Barstock Needle Valve - 0.0061 Cv 169/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	169/Each Drop Ship
Item 98543	1/8" FNPT x 1/8" FNPT Stainless Steel 90° MFV™ Series Metering Barstock Needle Valve - 0.016 Cv 169/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	169/Each Drop Ship
Item 98545	1/8" FNPT x 1/8" FNPT Stainless Steel 90° MFV™ Series Metering Barstock Needle Valve - 0.054 Cv 169/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	169/Each Drop Ship
Item 98547	1/8" FNPT x 1/8" FNPT Stainless Steel 90° MFV™ Series Metering Barstock Needle Valve - 0.118 Cv 169/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	NEW	169/Each Drop Ship