VB precision barstock valves

MFV Barstock utility valves: hysteresis-free, bubble-tight shutoff, straight/90° flow, brass/stainless steel, 16 turns, 21.5 SLPM air/650 mLPM water.

Downloads

Brochure

Description
Specifications
Standard valve
Hight-Resolution Valve

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.


Maximum pressure	34 bar(g)
Maximum temperature	121°C (82°C -brass)
Valve stem	Sixteen turns, non-rising type
Body	Chrome plated brass or 316 stainless steel
Valve needle	316 stainless steel
Orifice	316 stainless steel with PTFE liner for valve sizes 1, 2 and 3; PCTFE for valve sizes 4,5,6 and 7
O-Rings	Buna-N® (brass valves). Viton® (stainless valves).

Standard valve

Part Number	Flow Pattern	Material	Maximum Flow (ml/min) AIR	Maximum Flow (ml/min) WATER	Orifice (in)	CV
VCL-BB-1A	Straight	Brass	5000	350	0.052	0.03
VCL-SV-2A	Straight	Stainless	5000	350	0.052	0.03
VCL-BB-6A	90 degree	Brass	5000	350	0.052	0.03
VCL-SV-7A	90 degree	Stainless	5000	350	0.052	0.03
VCM-BB-1A	Straight	Brass	20000	1200	0.082	0.10
VCM-SV-2A	Straight	Stainless	20000	1200	0.082	0.10
VCM-BB-6A	90 degree	Brass	20000	1200	0.082	0.10
VCM-SV-7A	90 degree	Stainless	20000	1200	0.082	0.10
VCH-BB-1A	Straight	Brass	60000	3500	0.120	0.30
VCH-SV-2A	Straight	Stainless	60000	3500	0.120	0.30
VCH-BB-6A	90 degree	Brass	60000	3500	0.120	0.30
VCH-SV-7A	90 degree	Stainless	60000	3500	0.120	0.30

Hight-Resolution Valve

Part Number	Flow Pattern	Material	Maximum Flow (ml/min) AIR	Maximum Flow (ml/min) WATER	Orifice (in)	CV
VM1-BB-1A	Straight	Brass	200	6	0.042	0.0005
VM2-BB-1A	Straight	Brass	400	12	0.042	0.001
VM3-BB-1A	Straight	Brass	1000	30	0.042	0.0025
VM4-BB-1A	Straight	Brass	2500	70	0.093	0.0061
VM5-BB-1A	Straight	Brass	6200	200	0.093	0.016
VM6-BB-1A	Straight	Brass	21500	650	0.093	0.054
VM7-BB-1A	Straight	Brass	46090	1410	0.093	0.118
VM1-SV-2A	Straight	Stainless	200	6	0.042	0.0005
VM2-SV-2A	Straight	Stainless	400	12	0.042	0.001
VM3-SV-2A	Straight	Stainless	1000	30	0.042	0.0025
VM4-SV-2A	Straight	Stainless	2500	70	0.093	0.0061
VM5-SV-2A	Straight	Stainless	6200	200	0.093	0.016
VM6-SV-2A	Straight	Stainless	21500	650	0.093	0.054
VM7-SV-2A	Straight	Stainless	46090	1410	0.093	0.118
VM1-BB-6A	90 degree	Brass	200	6	0.042	0.0005
VM2-BB-6A	90 degree	Brass	400	12	0.042	0.001
VM3-BB-6A	90 degree	Brass	1000	30	0.042	0.0025
VM4-BB-6A	90 degree	Brass	2500	70	0.093	0.0061
VM5-BB-6A	90 degree	Brass	6200	200	0.093	0.016
VM6-BB-6A	90 degree	Brass	21500	650	0.093	0.054
VM7-BB-6A	90 degree	Brass	46090	1410	0.093	0.118
VM1-SV-7A	90 degree	Stainless	200	6	0.042	0.0005
VM2-SV-7A	90 degree	Stainless	400	12	0.042	0.001
VM3-SV-7A	90 degree	Stainless	1000	30	0.042	0.0025
VM4-SV-7A	90 degree	Stainless	2500	70	0.093	0.0061
VM5-SV-7A	90 degree	Stainless	6200	200	0.093	0.016
VM6-SV-7A	90 degree	Stainless	21500	650	0.093	0.054
VM7-SV-7A	90 degree	Stainless	46090	1410	0.093	0.118