The SC423XL Series Flow Controller is a unique device which supplies a constant flow with a self correcting action to compensate for changes in downstream pressure.
The SC423XL was designed for air and analyzer sampling systems which require very low flow rates (less than 10 scc/m). Connected to a vacuum cylinder, the SC423XL provides consistant flow control despite changes in the vacuum.
Veri flo Contact Information: Parker Hannifin Corporation Veriflo Division 250 Canal Blvd Richmond, California 94804 phone 510 235 9590 fax 510 232 7396 veriflo.sales@parker.com www.parker.com/veriflo Mobile App: m.parker.com/veriflo
Value Proposition:
Gas Flow Controller Low Flow, Vacuum Applications, Stainless Steel SC423XL Series Product Features: • Stable flows over a wide temperature band • Color coded orifices • Special CFC Free cleaning • Tamper Proof • Rugged design • Reliable Precision Flow Control as low as 1 scc/m. • Adjustable flows • Hastelloy C-22® diaphragms • Stable flows as vacuum pressure changes from 28 in. Hg to 5 in. Hg
Flow Curves
Flow Stability Curve- .0016 orifice
Flow Rate (scc/m)
Tank Pressure (Inches Hg Vacuum)
Flow Stability Curve- .002 orifice
Flow Rate (scc/m)
Flow Stability Curve- .0012 orifice
Tank Pressure (Inches Hg Vacuum)
Flow Stability Curve- .003 orifice
Flow Rate (scc/m)
Tank Pressure (Inches Hg Vacuum)
Safety Guide and Installation and Operating Instructions available at www.parker.com/veriflo
0 1 2 3 4 5 6 7 8 0 5 10 15 20 25 30
0 2 4 6 8 10 12 14 16 0 5 10 15 20 25 30
Tank Pressure (Inches Hg Vacuum) Flow Rate (scc/m)
0 5 10 15 20 25 30 7580859095100105110115120125 Temperature ( F)
5% Flow Drop 8% Flow Drop 6% Flow Drop 0 0.5 1 1.5 2 2.5 3 3.5 4 0 5 10 15 20 25 30
Flow Rate (scc/m) Temperature Effect On Flow Rate
0 5 10 15 20 25 30 35 0 5 10 15 20 25 30
For an explanation of Ordering options please reference literature 25000275 at www.parker.com/veriflo Black = Standard Lead Time Configurations Blue = Extended Lead Time Configurations Green Italic = Express Service Program (ESP) Build an SC423XL Series by replacing the numbered symbols with an option from the corresponding tables below. Color Explanations: Body Material S = 316L Stainless Steel Sample Time/Flow Rate 3 = 27.1 - 27.7 sccm (Yellow) 8 = 10.0 - 10.4 sccm (Green) 12 = 6.5 - 6.9 sccm (Blue) 24 = 3.1 - 3.4 sccm (Red) Inlet Connection 4T = 1/4” A-LOK® Outlet Connection X = No Connections 4TS = 1/4” Tube Fitting 1 2 3 4 1 2 3 4 SC423XL S 24 4T 4TS SC423XLS244T4TS SC423XL Series Ordering Information Sample: Finished Order: Dimensional Drawing 4.29 (109 mm)
Materials of Construction
Wetted
For additional information on materials of construction, functional performance and operating conditions, please contact factory.
Functional Performance
Leak Rate Inboard Test Method
External 1 x 10-6 scc/sec He Approx. Weight 1.75 lbs. (0.80 kg) Operating Conditions
Maximum Inlet Atmospheric Outlet Vacuum Flow (see Flow Curves) As low as 1 scc/m Temperature -40°F to 200°F (-40°C to 94°C)
Hastelloy C-22® is a registered trademark of Haynes International, Inc. A-LOK® is a registered trademark of Parker Hannifin Corporation
OFFER OF SALE:
The items described in this document are hereby offered for sale by Parker-Hannifin Corporation, its subsidiaries or its authorized distributors. This offer and its acceptance are governed by the provisions stated in the detailed “Offer of Sale” elsewhere in this document or available at www.parker.com/veriflo WARNING USER RESPONSIBILITY
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FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE PRODUCTS DESCRIBED HEREIN OR RELATED ITEMS CAN CAUSE DEATH, PERSONAL INJURY AND PROPERTY DAMAGE. THIS DOCUMENT IS FOR REFERENCE ONLY. PLEASE CONSULT FACTORY FOR LATEST PRODUCT DRAWINGS AND SPECIFICATIONS
This document and other information from Parker-Hannifin Corporation, its subsidiaries and authorized distributors provide product or system options for further investigation by users having technical expertise.
The user, through its own analysis and testing, is solely responsible for making the final selection of the system and components and assuring that all performance, endurance, maintenance, safety and warning requirements of the application are met. The user must analyze all aspects of the application, follow applicable industry standards, and follow the information concerning the product in the current product catalog and in any other materials provided from Parker or its subsidiaries or authorized distributors.
To the extent that Parker or its subsidiaries or authorized distributors provide component or system options based upon data or specifications provided by the user, the user is responsible for determining that such data and specifications are suitable and sufficient for all applications and reasonably foreseeable uses of the components or systems.
The products described herein, including without limitation, product features, specifications, designs, availability and pricing are subject to change by Parker Hannifin Corp and it’s subsidiaries at any time without notice.
Proposition 65 Warning: This product contains chemicals known to the state of California to cause cancer or birth defects or other reproductive harm.
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