GEMU 690 50D78711413/N I-DE-88072442-00-3598790 Product Description

Overview

GEMU 690 50D78711413/N I-DE-88072442-00-3598790 is a 2/2-way pneumatic plastic diaphragm valve from GEMU 690 series, DN50 nominal size. The GEMU 690 50D78711413/N is constructed with PP-H lined body, I-DE-88072442-00-3598790 is the unique factory serial identification number of this valve. This GEMU 690 DN50 pneumatic diaphragm valve serves as a reliable GEMU 690 plastic diaphragm valve, designed for on/off control of corrosive chemical liquids and particle-containing media in industrial fluid pipelines of the GEMU 690 plastic diaphragm valve.

Features

This GEMU 690 50D78711413/N adopts a low-maintenance pneumatic diaphragm actuator, driven by dry compressed air for the GEMU 690 plastic diaphragm valve. The weir-type diaphragm structure completely separates process fluid from the actuator, eliminating stuffing box leakage risk and tolerating media with fine solid particles. The PP-H wetted material provides outstanding chemical resistance to acids, alkalis and many aggressive solvents. The valve supports bidirectional flow and flexible installation orientation. The GEMU 690 50D78711413/N can be fitted with optional position feedback switches, stroke limiters or positioners for remote signal feedback and modulating control. Standard interface dimensions of the 690 series simplify valve replacement and spare part management of the GEMU 690 plastic diaphragm valve.

Specs

The GEMU 690 50D78711413/N series: GEMU 690, 2/2-way pneumatic diaphragm valve, DN50. Body wetted material: PP-H. Diaphragm: PTFE/EPDM composite. 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 type: union socket end. The GEMU 690 50D78711413/N complies with CE and relevant industrial plastic fluid standards as a GEMU 690 DN50 pneumatic diaphragm valve.

Principle

GEMU 690 50D78711413/N I-DE-88072442-00-3598790 operates by compressed air acting on the actuator diaphragm and stem assembly. The GEMU 690 50D78711413/N stem presses the process diaphragm onto the valve weir to shut off flow when control air is not supplied; when control air is fed, the stem lifts to open the flow passage. The diaphragm acts as the only wetted sealing component, isolating the fluid medium from the actuator cavity. The weir design reduces internal dead volume and achieves bubble-tight shut-off. The all-plastic wetted structure of the GEMU 690 plastic diaphragm valve prevents corrosion from aggressive chemical fluids.

Applications

This GEMU 690 50D78711413/N is widely used in chemical dosing systems, wastewater treatment, electroplating production lines, pickling processes and flue gas desulfurization facilities. It is used for isolation and on-off control of corrosive acidic and alkaline liquids. It is stocked for pipeline renovation and maintenance replacement of existing GEMU 690 valve installations. The GEMU 690 50D78711413/N I-DE-88072442-00-3598790 delivers stable tight shut-off for large-bore corrosive liquid control loops as a proven GEMU 690 DN50 pneumatic diaphragm valve.