GEMU 69025D7871 411 I-DE-880072445-00-3486732 Product Description

Overview

GEMU 69025D7871 411 is a 2/2-way pneumatically operated plastic diaphragm valve from the GEMÜ 690 series. I-DE-880072445-00-3486732 is the unique serial identifier for factory traceability and spare part management. This valve adopts diaphragm sealing to achieve full isolation between the actuator and process media, widely used for shut-off and control of corrosive, inert liquids and gases in chemical, water treatment and high-purity process systems.

Features

GEMU 69025D7871 411 is designed with wetted plastic components and a flexible diaphragm seal. It is insensitive to particulate contaminants and provides bubble-tight bi-directional shut-off. The valve supports optional control functions including normally closed, normally open and double acting. Multiple body and diaphragm material combinations are available such as PP, PVC-U, PVDF, EPDM, FKM and PTFE to match different chemical media. It can be fitted with optional electrical position feedback switches, NAMUR mounting brackets and pneumatic positioners. The modular construction simplifies diaphragm replacement and on-site maintenance. The compact actuator design reduces air consumption and supports stable operation under continuous cyclic switching.

Specs

Brand: GEMU Model: 69025D7871 411 Serial code: I-DE-880072445-00-3486732 Product series: 690 Product category: Pneumatic plastic diaphragm valve Valve type: 2/2-way Nominal size: DN25 Max operating pressure: 10 bar Media temperature range: -10℃ ~ +80℃ Body material: PP Diaphragm material: EPDM Actuator supply: Compressed air Connection: Spigot / union end Certification: NSF 61 optional, CE

Principle

GEMU 69025D7871 411 uses compressed air to drive the internal actuator piston, which pushes or releases the diaphragm. The diaphragm presses against the valve body weir to block fluid flow, or lifts away to open the flow path. The diaphragm completely separates the process medium from the actuator chamber, preventing medium leakage and actuator contamination. Spring return design ensures safe fail-safe position when control air pressure is lost.

Applications

GEMU 69025D7871 411 is widely used for corrosive fluid handling. Typical applications include chemical dosing lines, water and wastewater treatment, plating process, semiconductor wet process, industrial cooling systems and pipeline spare replacement for existing GEMU diaphragm valve installations.