Compare Model Drawings, CAD & Specs Full Scale Flow Range Fitting Type Seal Material Minimum Controllable Flow Availability Price
248d general purpose flow control valve
Upstream Flow Control Valve, 10 sccm, 4 VCR Male Fitting, Kalrez Seal
$745
3 Weeks
10 sccm 4 VCR, male Kalrez 0.2% of Full Scale
3 Weeks
248d general purpose flow control valve
Upstream Flow Control Valve, 10 sccm, 4 VCR Male Fitting, Viton Seal
$645
3 Weeks
10 sccm 4 VCR, male Viton 0.2% of Full Scale
3 Weeks
248d general purpose flow control valve
Upstream Flow Control Valve, 10 sccm, 0.25 in. Tube, Viton Seal
$645
3 Weeks
10 sccm 0.25 in. Swagelok Viton 0.2% of Full Scale
3 Weeks
248d general purpose flow control valve
Upstream Flow Control Valve, 50 sccm, 4 VCR Male Fitting, Viton Seal
$645
3 Weeks
50 sccm 4 VCR, male Viton 0.2% of Full Scale
3 Weeks
248d general purpose flow control valve
Upstream Flow Control Valve, 50 sccm, 0.25 in. Tube, Viton Seal
$645
3 Weeks
50 sccm 0.25 in. Swagelok Viton 0.2% of Full Scale
3 Weeks
248d general purpose flow control valve
Upstream Flow Control Valve, 100 sccm, 4 VCR Male Fitting, Kalrez Seal
$750
3 Weeks
100 sccm 4 VCR, male Kalrez 0.1% of Full Scale
3 Weeks
248d general purpose flow control valve
Upstream Flow Control Valve, 100 sccm, 4 VCR Male Fitting, Viton Seal
$645
3 Weeks
100 sccm 4 VCR, male Viton 0.1% of Full Scale
3 Weeks
248d general purpose flow control valve
Upstream Flow Control Valve, 100 sccm, 0.25 in. Tube, Neoprene Seal
$645
100 sccm 0.25 in. Swagelok Neoprene 0.1% of Full Scale
248d general purpose flow control valve
Upstream Flow Control Valve, 100 sccm, 0.25 in. Tube, Viton Seal
$645
3 Weeks
100 sccm 0.25 in. Swagelok Viton 0.1% of Full Scale
3 Weeks
248d general purpose flow control valve
Upstream Flow Control Valve, 500 sccm, 4 VCR, Viton Seal
$645
3 Weeks
500 sccm 4 VCR, male Viton 0.1% of Full Scale
3 Weeks
248d general purpose flow control valve
Upstream Flow Control Valve, 500 sccm, 0.25 in. Tube, Viton Seal
$645
3 Weeks
500 sccm 0.25 in. Swagelok Viton 0.1% of Full Scale
3 Weeks
248d general purpose flow control valve
Upstream Flow Control Valve, 1,000 sccm, 4 VCR, Viton Seal
$645
3 Weeks
1000 sccm 4 VCR, male Viton 0.1% of Full Scale
3 Weeks
248d general purpose flow control valve
Upstream Flow Control Valve, 1,000 sccm, 0.25 in. Tube, Viton Seal
$645
3 Weeks
1000 sccm 0.25 in. Swagelok Viton 0.1% of Full Scale
3 Weeks
248d general purpose flow control valve
Upstream Flow Control Valve, 10,000 sccm, 4 VCR, Viton Seal
$645
3 Weeks
10000 sccm 4 VCR, male Viton 0.1% of Full Scale
3 Weeks
248d general purpose flow control valve
Upstream Flow Control Valve, 10,000 sccm, 0.25 in. Tube, Kalrez Seal
$750
3 Weeks
10000 sccm 0.25 in. Swagelok Kalrez 0.1% of Full Scale
3 Weeks
248d general purpose flow control valve
Upstream Flow Control Valve, 10,000 sccm, 0.25 in. Tube, Viton Seal
$645
3 Weeks
10000 sccm 0.25 in. Swagelok Viton 0.1% of Full Scale
3 Weeks

Specifications

  • Type
    248D Flow Control Valve
  • Full Scale Flow Range
    10 - 10,000 sccm
  • Minimum Controllable Flow
    0.2% Full Scale (<100 sccm)
    0.1% Full Scale (100 to 10,000 sccm)
    <2% Full Scale (>10,000 sccm)
  • Closed Conductance Leakage
    <1 × 10-5 scc/sec He (up to 10,000 sccm)
    <1% Full Scale (>10,000 sccm)
    (15 psid to atm)
  • Exposed Materials
    Standard: 316 S.S., Nickel, Viton®
    Optional: Buna-N, Kalrez®, Neoprene®
  • Seal Material
    Elastomer
  • Fitting Type
    Standard: 1/4 inch Swagelok®
    Optional: 4 VCR or 4 VCO® male
  • Operating Temperature
    -10 to 60°

Features

Flow Valve Controller

The 250E is a self-contained PID pressure and flow control module designed to provide optimized control of the total pressure or flow of a gas (or gases) in a dynamic closed-loop system. With the 250E, input can be supplied by a Baratron® Capacitance Manometer or other compatible vacuum gauge for closed-loop pressure control, or flow input can be measured by a mass flow transducer for closed-loop flow control. Its power supply has sufficient output to power most capacitance manometers and flow valves. Process control can be manually adjusted through a front panel potentiometer or remotely programmed with a 0-5 VDC analog signal for profile generating.

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