GEMU 690 50D7114-1 ICH-88028186-00-517709 Product Description

Overview

GEMU 690 50D7114-1 ICH-88028186-00-517709 is a 2/2-way pneumatic plastic diaphragm valve of GEMU 690 series, DN50 nominal size. The GEMU 690 50D7114-1 adopts PVC-U valve body and EPDM diaphragm, normally closed configuration. ICH-88028186-00-517709 is the unique factory serial identification number of this individual valve. This GEMU 690 DN50 pneumatic diaphragm valve serves as a reliable GEMU 690 plastic diaphragm valve, designed for on-off control of corrosive acidic and alkaline liquids in chemical, electroplating and water treatment pipelines of the GEMU 690 plastic diaphragm valve.

Features

This GEMU 690 50D7114-1 is equipped with low-maintenance pneumatic diaphragm actuator, operated by dry compressed air for the GEMU 690 plastic diaphragm valve. The weir-type diaphragm structure fully separates process fluid from the actuator assembly, eliminating stuffing box leakage risk and tolerating media with fine particles. PVC-U wetted body provides good chemical resistance to most inorganic acids and alkalis. The valve supports bidirectional flow and flexible mounting orientation. The GEMU 690 50D7114-1 can be fitted with optional position feedback switches, stroke limiters or positioners for remote status feedback and modulating control. Unified installation dimensions of the 690 series simplify field replacement and spare part management of the GEMU 690 plastic diaphragm valve.

Specs

The GEMU 690 50D7114-1 series: GEMU 690, 2/2-way pneumatic diaphragm valve, DN50. Body material: PVC-U. Diaphragm: EPDM. Actuator 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 50D7114-1 complies with CE and relevant plastic fluid system standards as a GEMU 690 DN50 pneumatic diaphragm valve.

Principle

GEMU 690 50D7114-1 ICH-88028186-00-517709 uses compressed air to drive the actuator diaphragm and stem assembly. The GEMU 690 50D7114-1 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 PVC-U plastic wetted structure of the GEMU 690 plastic diaphragm valve resists corrosion from aggressive chemical fluids.

Applications

This GEMU 690 50D7114-1 is widely used in chemical dosing, wastewater treatment, electroplating lines, pickling processes and flue gas desulfurization facilities. It is used for isolation and on-off switching of corrosive aqueous chemical media. It is stocked for pipeline renovation and maintenance replacement of existing GEMU 690 valve installations. The GEMU 690 50D7114-1 ICH-88028186-00-517709 delivers stable tight shut-off for large-bore corrosive liquid control loops as a proven GEMU 690 DN50 pneumatic diaphragm valve.