GEMU 690 40D78205E12/N I-DE-88226200-00-3486728 Product Description

Overview

GEMU 690 40D78205E12/N I-DE-88226200-00-3486728 is a pneumatic 2/2-way plastic diaphragm valve of the GEMU 690 series for corrosive fluid control. GEMU 690 40D78205E12/N I-DE-88226200-00-3486728 adopts the isolation diaphragm design to separate the actuator from the process medium, avoiding medium contamination and leakage risk. GEMU 690 40D78205E12/N I-DE-88226200-00-3486728 is widely used in chemical dosing, pure water and waste liquid pipelines that require reliable shut-off performance.

Features

GEMU 690 40D78205E12/N I-DE-88226200-00-3486728 is DN40 size with plastic valve body and compatible diaphragm material for acid and alkaline media. It is a pneumatic actuated normally closed valve, which closes automatically when the control air supply is cut off. The diaphragm forms a complete isolation barrier between the flowing medium and the pneumatic drive part, so the actuator will not be corroded by the process fluid. It has no dead volume in the flow path, which is suitable for clean fluid and easy pipeline flushing. The visual position indicator on the actuator can show open and closed status directly on site. GEMU 690 40D78205E12/N I-DE-88226200-00-3486728 supports diaphragm replacement separately for convenient maintenance. It can be matched with position feedback switches to send valve status signals to PLC and upper control systems. The valve body connection is socket union type for quick assembly and disassembly on site.

Specs

Brand: GEMU Model: 690 40D78205E12/N Serial identifier: I-DE-88226200-00-3486728 Product category: Pneumatic diaphragm valve Series: 690 Nominal size: DN40 Valve type: 2/2 way Operation: Pneumatic actuation Function: Normally closed Body material: Corrosion resistant plastic Diaphragm material: EPDM Connection form: Socket union connection Medium: Corrosive liquid, pure water, chemical solution

Principle

GEMU 690 40D78205E12/N I-DE-88226200-00-3486728 relies on compressed air to drive the internal actuator assembly. When compressed air enters the actuator chamber, the driving component pushes the diaphragm away from the valve seat to open the flow channel and allow the medium to pass. When the control air is exhausted, the built-in spring pushes the diaphragm back and presses tightly against the valve seat to cut off the fluid flow. The diaphragm keeps the pneumatic actuator completely isolated from the process medium. GEMU 690 40D78205E12/N I-DE-88226200-00-3486728 converts pneumatic control signals into on-off action of the pipeline medium.

Applications

GEMU 690 40D78205E12/N I-DE-88226200-00-3486728 is applied in industrial fluid treatment systems. It is commonly used in chemical dosing pipelines, wastewater treatment, electroplating lines, ultra-pure water distribution and chemical skid systems. It can cooperate with solenoid valves and sensors to realize automatic medium switching and dosing control, and it is suitable for occasions with strict anti-corrosion and zero leakage requirements.