Humphrey Diaphragm-Poppet Solenoid Valves

Humphrey Diaphragm-Poppet Solenoid Valve: the industrial powerhouse

The Humphrey diaphragm-poppet solenoid valve series is synonymous with raw power and indestructible reliability. These electrically controlled valves use Humphrey's legendary diaphragm-poppet technology, making them virtually insensitive to contamination and requiring no lubrication. Whether you choose the compact 250 series or the impressive flow of the 590 series, Inacom supplies the right configuration for your toughest pneumatic challenges.

Designed for extreme conditions

What sets the Humphrey diaphragm-poppet solenoid valve apart from conventional valves is the absence of sliding seals. Instead, the air flow is controlled by a poppet that strikes directly on a seat. That makes this valve the ideal choice for environments where the compressed air is not optimally filtered or where a high degree of repeatability is required after a long standstill. The valves do not stick ("stiction-free") and always switch immediately.

Performance and models

In this category we offer three powerful series, each optimised for specific flows and applications:

• 250 series: The most versatile choice for general machine building, available in 2-, 3- and even 4-weg configurations.
• 500 series: An extremely robust brass valve that takes a huge step forward in flow capacity.
• 590 series: The flagship for high-flow applications, combining a lightweight aluminium housing with the highest flow in its class.

Comparison: 250, 500 & 590 series

Why Humphrey diaphragm-poppet technology?

When you select a Humphrey diaphragm-poppet solenoid valve, you choose a low-maintenance system. Because the poppet seals are "self-cleaning", small dirt particles are simply blown away with every switching cycle. This is a big advantage over spool valves, where dirt can damage the seals. For applications that require a smaller footprint or precision instrumentation, you can also look at our Humphrey HK5 miniature valves.