Stackable Solenoid Valves: Compact Design Advantages for OEM Pneumatic Systems

In analytical instrumentation, medical devices, and compact automation systems, space is the most constrained resource. The question isn’t “does this valve have enough flow?” — it’s “will it fit?”

Spartan Scientific’s newly released Series 1090 and Series 1590 stackable solenoid valve platforms address space constraints in compact electro-pneumatic systems from two distinct angles. Using these products as reference examples, this article maps the key dimensions of compact solenoid valve selection.

Series 1090: 10 mm Wide, 50 Million Cycle Micro-Valve

The Series 1090 is a 10 mm-wide stackable solenoid valve rated for low-power switching and up to 50 million cycles in clean, dry air applications. Target applications:

• Analytical instrumentation — gas switching in GC, mass spectrometry, and liquid handling systems
• Medical devices — precision pneumatic control in ventilators, anesthesia machines, and in-vitro diagnostic equipment
• Compact automation — embedded control systems where panel space is extremely limited

A 10 mm footprint means 40-60% more valve positions on the same mounting rail length — a significant engineering liberation for designers working with tightly constrained panel layouts.

Series 1590: 15 mm Wide, IP65 Rated, 145 psi Capability

The Series 1590 expands to 15 mm width in exchange for three critical upgrades:

• Orifice options up to 1.5 mm — larger flow passage for higher-demand circuits
• Maximum operating pressure of 145 psi (10 bar) — covering most industrial pneumatic applications
• IP65 environmental protection rating — suitable for humid or dusty conditions

IP65 means complete dust ingress protection and resistance to water jets — in food and beverage, outdoor equipment, and dusty factory environments, this protection level significantly reduces valve failures from moisture ingress or particulate accumulation.

Stackable Modular Design: Why Not “Buy a Row of Individual Valves”?

Both Spartan series use modular, sub-base stackable configurations with distinct advantages:

• Air routing through the integrated manifold — no individual tubing connections per valve; fewer connection points means fewer potential leak points
• Expand without redesign — adding stations later simply means adding one more section to the stack, not redesigning the pneumatic sub-plate and re-routing tubing
• Multiple voltage and connection options — adaptable to different control system architectures

For OEM machine builders, stackable design means one base machine platform can be quickly reconfigured into multiple variants by adding or removing valve sections — without designing a unique pneumatic system for each configuration.

Four Dimensions of Compact Solenoid Valve Selection

1. Space constraint: Every millimeter of valve width multiplies across the full stack. If space is the dominant constraint, 10 mm width is the hard requirement
2. Flow requirement: Actuating a small cylinder requires fundamentally different flow than switching an analytical gas path. Orifice diameter determines Cv
3. Environmental conditions: A clean laboratory environment vs. a dusty, wet factory floor — this determines whether IP65 is mandatory
4. Lifecycle requirement: 50 million cycles is sufficient for most applications. But for 24/7 high-frequency operation, verify that the actual annual cycle count falls within the rated range

Doskee Automation specializes in industrial automation and fluid control, offering Spartan Scientific, FESTO, SMC, and other leading-brand solenoid valves, valve terminals, and pneumatic control products. We help OEM clients design efficient and reliable pneumatic control systems within compact space constraints. For technical consultation or product selection, please contact us.

References: PneumaticTips “Spartan Scientific debuts 1090 and 1590 stackable solenoid valves” | Spartan Scientific Product Documentation