248D General Purpose Flow Control Valve
Overview
The 248D control valve is a modified solenoid valve that when supplied with a controlling current will modulate the flow of gas. When used with an MKS controller and appropriate flow sensor, the 248D valve modulates gas flow while maintaining accurate and precise pressure or flow.
The valve seat connected to the armature is lifted away from the adjustable orifice as increasing current is applied to the solenoid. Two spiral springs center the armature within the valve body and oppose the magnetic lifting force. These springs minimize friction and hysteresis, Product Features major causes of poor control performance. With a 1249 control valve driver to provide the necessary drive signal to operate the solenoid valve, the 248D valve can be used for either pressure or flow control.
The orifice of the 248D valve is easily adjusted or replaced without special tools. Adjustment may be required to eliminate leakage across the valve resulting from normal operational wear. Replacement is required when wear is excessive or to change the flow range of the valve.
- Easily adjusted or replaced without special tools
- Modulates gas flow while maintaining precise pressure or flow
Products
| Compare | Description | Drawings, CAD & Specs | Availability | Price | |||
|---|---|---|---|---|---|---|---|
|
0248D-00010RK Upstream Flow Control Valve, 10 sccm, 4 VCR Male Fitting, Kalrez Seal |
3 Weeks
|
$1,189 |
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0248D-00010RV Upstream Flow Control Valve, 10 sccm, 4 VCR Male Fitting, Viton Seal |
3 Weeks
|
$748 |
|
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0248D-00010SV Upstream Flow Control Valve, 10 sccm, 0.25 in. Tube, Viton Seal |
3 Weeks
|
$748 |
|
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0248D-00050RV Upstream Flow Control Valve, 50 sccm, 4 VCR Male Fitting, Viton Seal |
3 Weeks
|
$748 |
|
|||
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0248D-00050SV Upstream Flow Control Valve, 50 sccm, 0.25 in. Tube, Viton Seal |
3 Weeks
|
$748 |
|
|||
|
|
0248D-00100RK Upstream Flow Control Valve, 100 sccm, 4 VCR Male Fitting, Kalrez Seal |
3 Weeks
|
$1,189 |
|
|||
|
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0248D-00100RV Upstream Flow Control Valve, 100 sccm, 4 VCR Male Fitting, Viton Seal |
3 Weeks
|
$748 |
|
|||
|
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0248D-00100SN Upstream Flow Control Valve, 100 sccm, 0.25 in. Tube, Neoprene Seal | $748 |
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0248D-00100SV Upstream Flow Control Valve, 100 sccm, 0.25 in. Tube, Viton Seal |
3 Weeks
|
$748 |
|
|||
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0248D-00500RV Upstream Flow Control Valve, 500 sccm, 4 VCR, Viton Seal |
3 Weeks
|
$748 |
|
|||
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0248D-00500SV Upstream Flow Control Valve, 500 sccm, 0.25 in. Tube, Viton Seal |
3 Weeks
|
$748 |
|
|||
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0248D-01000RV Upstream Flow Control Valve, 1,000 sccm, 4 VCR, Viton Seal |
3 Weeks
|
$748 |
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0248D-01000SV Upstream Flow Control Valve, 1,000 sccm, 0.25 in. Tube, Viton Seal |
3 Weeks
|
$748 |
|
|||
|
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0248D-10000RV Upstream Flow Control Valve, 10,000 sccm, 4 VCR, Viton Seal |
3 Weeks
|
$748 |
|
|||
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0248D-10000SK Upstream Flow Control Valve, 10,000 sccm, 0.25 in. Tube, Kalrez Seal |
3 Weeks
|
$870 |
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|||
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0248D-10000SV Upstream Flow Control Valve, 10,000 sccm, 0.25 in. Tube, Viton Seal |
3 Weeks
|
$748 |
|
Configuration Options
The following options are available for 248D Solenoid Control Valves
Ordering Code Example: 0248D-01000SV
|
Configuration Option |
Option Code |
|---|---|
| 248D Control Valve | 0248D |
Full Scale Range |
|
| 10 sccm | 00010 |
| 20 sccm | 00020 |
| 50 sccm | 00050 |
| 100 sccm | 00100 |
| 200 sccm | 00200 |
| 500 sccm | 00500 |
| 1000 sccm | 01000 |
| 2000 sccm | 02000 |
| 5000 sccm | 05000 |
| 10000 sccm | 10000 |
| 20000 sccm | 20000 |
| 50000 sccm | 50000 |
Fitting |
|
| 0.25 in. Swagelok | S |
| Swagelok 4 VCR | R |
| Swagelok 4 VCO | G |
Seal Material |
|
| Viton | V |
| Neoprene | N |
| Buna-N | B |
| Kalrez | K |
Specifications
-
Type248D Flow Control Valve
-
Full Scale Flow Range10 - 50,000 sccm
-
Minimum Controllable Flow0.2% 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 MaterialsStandard: 316 S.S., Nickel, Viton®
Optional: Buna-N, Kalrez®, Neoprene®
-
Seal MaterialViton, Neoprene, Buna-N, or Kalrez
-
Fitting TypeStandard: 0.25 inch Swagelok®
Optional: 4 VCR or 4 VCO® male -
Operating Temperature-10 to 60°
-
ComplianceCE
Ultra-High Velocity