GEMU 690 25D711411/N ICH-88028183-00-539562 Product Description

Overview

GEMU 690 25D711411/N ICH-88028183-00-539562 is a 2/2-way pneumatic plastic diaphragm valve of GEMU 690 series, DN25 nominal size. The GEMU 690 25D711411/N adopts PVC-U valve body, normally closed function, ICH-88028183-00-539562 is the unique factory serial identification number of this individual valve. This GEMU 690 DN25 pneumatic diaphragm valve serves as a reliable GEMU 690 plastic diaphragm valve, widely used for on/off control of corrosive, particle-containing liquid media in chemical, electroplating and water treatment pipelines of the GEMU 690 plastic diaphragm valve.

Features

This GEMU 690 25D711411/N uses compact low-maintenance diaphragm pneumatic actuator, driven by dry compressed air for the GEMU 690 plastic diaphragm valve. The weir-type diaphragm structure completely isolates the process medium from the actuator, no packing gland leakage risk, and tolerates media with fine particles. The PVC-U body provides excellent resistance to acids and alkalis, with EPDM diaphragm matching the 411 code configuration. The valve supports bidirectional flow and arbitrary mounting orientation. The GEMU 690 25D711411/N can be equipped with optional position feedback switches, stroke limiters or positioners for automatic signal feedback and modulating control. Consistent installation dimensions across the 690 series simplify valve replacement and spare part management of the GEMU 690 plastic diaphragm valve.

Specs

The GEMU 690 25D711411/N series: GEMU 690, 2/2-way pneumatic diaphragm valve, DN25. Body material: PVC-U. Diaphragm: EPDM. Function: normally closed. Max working pressure: 10 bar. Control air pressure: 5.5–7.0 bar. Media temperature range: -10°C to +80°C. Connection: union socket end. The GEMU 690 25D711411/N complies with CE and relevant plastic fluid system standards as a GEMU 690 DN25 pneumatic diaphragm valve.

Principle

GEMU 690 25D711411/N ICH-88028183-00-539562 relies on compressed air to push the actuator diaphragm and stem assembly. The GEMU 690 25D711411/N stem presses the process diaphragm onto the valve weir to shut off flow when no control air is supplied; when control air is fed, the stem lifts and opens the flow channel. The diaphragm is the only wetted sealing component, separating the fluid from the actuator cavity. The weir design reduces dead volume and achieves tight bubble-tight shut-off. The all-plastic wetted structure of the GEMU 690 plastic diaphragm valve prevents corrosion by aggressive chemical fluids.

Applications

This GEMU 690 25D711411/N is widely used in chemical dosing, wastewater treatment, electroplating lines, pickling processes and flue gas desulfurization systems. It is used for on/off isolation of corrosive acidic and alkaline liquids. It is stocked for pipeline renovation and maintenance replacement of existing GEMU 690 valve installations. The GEMU 690 25D711411/N ICH-88028183-00-539562 delivers stable tight shut-off for corrosive liquid control loops as a proven GEMU 690 DN25 pneumatic diaphragm valve.