Multipositionsventile von VICI Valco
Einführung und Beschreibungen
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Valco
Multiposition Valves Instead of the back and forth switching of two position valves, multiposition valves step incrementally through continuous revolutions (bi-directionally with the microelectric actuator). While we can supply older models, all the valves in this catalog have a preload assembly. This design allows the rotor to be inspected or replaced without taking the valve off the actuator, and valves ordered with a microelectric actuator are permanently aligned. |
SC (common outlet) valves are similarto SDs, exceptthat instead of being dead-ended the non-selected streams flow to a common outlet. SF (flow-through) valves are similar to SDs and SCs, selecting a stream and sending it to the outlet. However, SFs allow the non-selected streams to flow through individual outlets instead of a common outlet.
ST (trapping) valves are used for multi-column, multi-sample, or multitrap operations. STF (trapping/flow-through) valves are similar to STs,with the single difference that the non-selected streams are returned to t heir own vents or sources rather that being dead-ended or trapped as they are in the standard ST configuration.
| PORT DIAMETERS LOW PRESSURE (MW) | PORT DIAMETERSHIGH PRESSURE (UW) | ||||
| Fitting size | No. of Positions | Standard port diameter | Fitting size | No. of Positions | Standard port diameter |
| SD | SD | ||||
| 1/16" | 4 - 16 | 0,75 mm ( 0,030" ) | 1/16" | 4 - 12 | 0,40 mm ( 0,16" ) |
| 1/8" | 4 - 16 | 1,0 mm ( 0,040" ) | 1/8" | 4, 6, 8 | 0,75 mm ( 0,030" ) |
| 1/4" | 4 - 10 | 4,0 mm ( 0,156" ) | ST | ||
| SC | 1/16" | 4, 6 | 0,40 mm ( 0,16" ) | ||
| 1/16" | 4 - 16 | 1,0 mm ( 0,040" ) | |||
| 1/8" | 4 - 16 | 1,0 mm ( 0,040" ) | |||
| 1/4" | 4 - 8 | 4,0 mm ( 0,156" ) | |||
| SF | |||||
| 1/16" | 4 - 16 | 1,0 mm ( 0,040" ) | |||
| 1/8" | 4 - 16 | 1,0 mm ( 0,040" ) | |||
| 1/4" | 4 - 8 | 4,0 mm ( 0,156" ) | |||
| ST | |||||
| 1/16" | 4 - 16 | 0,75 mm ( 0,030" ) | |||
| 1/8" | 4 - 16 | 1,0 mm ( 0,040" ) | |||
| STF | |||||
| 1/16" | 4 - 16 | 0,75 mm ( 0,030" ) | |||
| 1/8" | 4 - 16 | 1,0 mm ( 0,040" ) | |||
Valco MW Type low pressure valves are available with 1/16",1 /8" or 1/4" fittings. (Refer to the chart opposite for port diameters.) The 1/16" and 1/8" valves can be ordered with 4, 6, 8, 10, 12, or 16 positions, in any of the five flowpath configurations. Valves with 1/4" fittings are available in SD, SC, and SF flowpaths: SDs have 4, 6, 8, or 10 positions; SCs and SFs have 4, 6, or 8.
Although not shown in this catalog, MW valves are also available in a higher temperature version. While actual specifications vary with the configuration, typical specifications are 200 psi and 330°C. Consult ourtechnical staff for more information.
| VALCO MULTIPOSITION VALVES - LOW PRESSURE (MW) | ||||||||
| Fittings size | Number
of positions |
Standard rotor material | Max pressure | Max temp. | Max pressure | Max temp. | Max pressure | Max temp. |
| SD Dead-end flowpath | SC Common outlet flowpath | Note: All low pressure 1/16" and 1/8" valves are also available in versions up to 330°C. | ||||||
| 1/16" | 4 - 16 | Valcon E | 400 psi gas | 200°C | 200 psi gas | 200°C | ||
| 1/8" | 4 - 8 | Valcon E | 400 psi gas | 200°C | 200 psi gas | 200°C | ||
| 10 - 16 | Valcon E | 200 psi gas | 200°C | 200 psi gas | 200°C | |||
| 1/4" | 4 - 8 | Valcon E2 | 100 psi gas | 75°C | 100 psi gas | 75°C | ||
| SF Flow-through flowpath | ST Trapping flowpath | STF Trapping/Flow-through flowpath | ||||||
| 1/16" | 4 - 16 | Valcon E | 200 psi gas | 200°C | 200 psi gas | 200°C | 200 psi gas | 200°C |
| 1/8" | 4 - 16 | Valcon E | 200 psi gas | 200°C | 200 psi gas | 200°C | 200 psi gas | 200°C |
| 1/4" | 4 - 8 | Valcon E2 | 100 psi gas | 75°C | ||||
Valco UW Type high pressure valves are available in SD and ST flowpaths. SD valves with 1/16" fittings are available in 4, 6, 8, 10 or 12 positions, while 1/8" valves can be ordered with 4, 6, 8 or 10 positions. ST flowpath UW valves have 1/16" fittings, with either 4 or 6 positions. ( Refer to the chart opposite for port diameters.)
| VALCO MULTIPOSITION VALVES - HIGH PRESSURE (UW) | ||||||
| Fittings size | Number
of positions |
Standard rotor material | Max pressure | Max temp. | Max pressure | Max temp. |
| SD Dead-end flowpath | ST Trapping flowpath | |||||
| 1/16" | 4 - 12 | Valcon E | 5000 psi liq | 75°C | 5000 psi liq | 75°C |
| 1/8" | 4 - 8 | Valcon E | 5000 psi liq | 75°C | ||
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| Low Pressure Multiposition Valves | High Pressure Multiposition Valves |