Daisy Sol Val XL

Description

Daisy Sol Val XL is the larger sibling of Daisy Sol Val — it features a bigger manifold with larger solenoid valves to accommodate faster flow rates. Specifically, this instrument uses 8 LFV series, isolation style, 2-way normally closed solenoid valves from Lee Company (Connecticut, USA). The LFV valves contain a diaphragm seal made out of a chemically inert elastomer (EPDM) that isolates and protects the valve’s inner parts from the fluid. Each valve is 100% functionally tested by the factory to ensure optimal and reliable switching performance. These valves are regularly used in medical, biotechnology, and scientific measurement and research instrumentation owing to their reliability and consistent performance.

The LFV series solenoid valves feature zero dead volume and only 21 μl of internal volume that is readily and easily flushable without retention. They can operate at pressures from vacuum to 30 psig. The maximum flow rate through these valves before they can no longer fully close (above 30 psi differential pressure) is 415 ml/min. Therefore, the Daisy Sol Val is recommended for applications with flow speeds typically under 400 ml/min.

The valves can switch in as little as 30 ms, but increasing pressures within the valve body may impact their dynamics. Daisy Sol Val is designed for moderate-speed (e.g., a few Hz) switching. Separate modules for specialized high-speed applications (such as nanoliter dispensing) will be offered in the near future.

The valve heads and the flow manifold itself are precision manufactured out of PEEK, which is highly chemically compatible with a wide variety of aqueous and organic solutions. Check the Chemical Compatibility section for more information on wetted materials (PEEK and EPDM).

The manifold is designed to house 4 channels along a common port line on either half of the manifold. The common channels can be bridged to yield an 8×1 configuration, or kept separate to yield two 4×1 configurations. Whenever a given valve opens, it is connected to the common channel, allowing fluid to flow between the side port and the common port(s). In one typical application, the user would select from multiple input samples and direct that stream through the common port into a target vessel or flow channel via a downstream pump. The reverse is also possible, with the target stream being directed to different output locations via an upstream pump. Multiple Daisy Sol Val modules can be chained to create custom flow networks as needed.

Plug all unused ports with our specialized port plugs.

For applications requiring a different topology — such as 2-way or 3-way isolated ports without a common channel — we can offer alternative and custom manifold configurations with the Daisy Sol Val. Simply reach out to us with your custom request before ordering.