Analytical & Medical Technology

Miniature solenoid valves are becoming the fluid automation technology of choice for analytical and medical device OEMs.


Principles of Flapper Isolation Valve Technology

Flapper isolation technology offers greater throughput, smaller sample sizes, and reduced calibration requirements in analytical and clinical applications. For example, the Emerson ASCO 068 Series valve’s 20 ms response time and exceptional volume control mean OEMs can design instruments with higher productivity, better flushability, and more precise measurements while end users get much greater measurement repeatability. The technology has been tested to over 10 million cycles for extended product life.

How It Works

General Service

General service valve technology controls the flow of neutral gases. It is known for the capability to provide long service life and fast response. The technology enables multiple mounting configurations. Applications include blood pressure monitoring, oxygen concentrators, dental equipment, air monitoring, pharmaceuticals.



Miniature solenoid isolation technology has delivered the low profile and high reliability so critical in analytical and clinical applications. It separates internal valve components from fluid media via mechanisms such as rockers or flappers. Ideal for handling hard-to-manage fluids such as blood, diagnostic reagents, and wash buffer solutions, isolation valves are prized for their inert materials, low internal volumes, easy-to-flush architectures, low power consumption, and outstanding lifetimes.



Pinch valve technology controls fluid media using soft tubing that is alternately constricted or released by a mechanism to block or permit flow. They are the best solution in analytical and diagnostic instrumentation where flows of corrosive or high-purity fluids make it critical to minimize contamination risk for accurate and repeatable results. Emerson ASCO pinch valves present zero internal dead volume plus efficient, economical access and serviceability.



Proportional valve technology controls the flow of neutral fluids. By varying the input current, the valve’s flow rate can be precisely adjusted. This eliminates the need for a variable flow system that contains multiple valves with different flow rates. Proportional valve applications include anesthesia equipment, blood pressure monitoring, endoscopy equipment, gas chromatography, respirators, and ventilators.



Emerson ASCO valves can be ordered as customized turnkey fluid automation solutions that include a manifold with fittings and special connections. These assemblies consist of valves mounted on an anodized aluminum manifold and 100% factory tested. The plug-and-play assemblies provide OEMs with lower manufacturing costs and faster production cycles. Typical materials used in custom miniature valve manifolds include diffusion bonded acrylic, PEEK, PEI, PTFE (Teflon), and PP.


Medical Instrument Maker Suffers from Late and Leaky Pinch Valves

The pinch valves in surgical suction equipment were delivered late, plus leaked when installed.  The medical device maker cured its problems with Emerson technology.

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