GEMÜ 690 25D7871141 I-DE-88072437-00-3176768 Type 690 Pneumatic 2/2-way Plastic Diaphragm Valve, DN25 PN10

Overview The GEMÜ 690 25D7871141 is a plastic pneumatic diaphragm valve of the GEMÜ 690 series. It is designed for corrosive chemical media, water treatment and plating process pipelines, widely stocked as spare for chemical, water treatment and marine fluid systems. The suffix I-DE-88072437-00-3176768 is the factory serial / trace number.

Features This DN25 valve body is made of corrosion-resistant plastic, with diaphragm sealing structure, zero dead leg, suitable for liquid containing fine particles. The 690 25D7871141 is spring return normally closed, driven by compressed air, with built-in visual position indicator. It supports bidirectional sealing, can be fitted with limit switch feedback box, NAMUR positioner and stroke limiter. Wetted material options include EPDM / PTFE composite diaphragm for strong chemical resistance.

Specs Model: 690 25D7871141 Serial No.: I-DE-88072437-00-3176768 Series: GEMÜ Type 690 Type: Pneumatic 2/2-way diaphragm valve Size: DN25 Pressure rating: PN10 Operation: Spring return normally closed Process connection: Union socket Mounting: Pipeline inline Certifications: CE, FDA optional Product status: active process valve spare

Principle Compressed air pushes the actuator membrane to lift the diaphragm and open the flow path; when air supply is cut off, the spring pushes the diaphragm down to seal the medium passage. No metal parts contact the process fluid.

Applications The 690 25D7871141 is widely used in wastewater treatment, chemical dosing, acid/alkali circulation, plating lines and marine water systems. It is used for on-off control of corrosive fluid media.