Vent valve type 595 PP-H socket fusion PN10 d16-d110

  Datasheet (PDF)

The Georg Fischer PROGEF Standard Type 595 vent valve admits air and relieves vacuum in industrial thermoplastic piping networks. Moulded in beta-PP-H (polypropylene homopolymer), it protects pipelines, storage tanks and process vessels against negative pressure and mechanical collapse during emptying, draining or thermal cooling. Metric socket fusion sockets cover d16 mm to d110 mm (DN10 to DN100) and integrate directly into SDR 11 PN10 polypropylene lines.

The internal mechanism uses a stainless steel spring coated with HALAR (ECTFE), which withstands aggressive fumes, acidic media and alkaline environments. The opening response is calibrated between 10 and 80 mbar, so the valve breaks vacuum conditions promptly and reseals as soon as equilibrium or positive working pressure returns, preventing any loss of medium. Sealing is handled by EPDM or FKM elastomer seals, selected according to the chemical compatibility of the conveyed fluid.

A heavy-duty protective cap in glass-fibre reinforced polypropylene (PP-GF) is fitted up to DN50, with polyoxymethylene (POM) on sizes DN65 to DN100, keeping the assembly serviceable in harsh plant conditions. The compact face-to-face length suits tight pipe runs, manifold skids and dosing stations, and leaves maintenance access free without dismantling adjacent sections. Like the rest of the PROGEF Standard range, the valve is engineered for a 25-year operational life with water at 20 degrees Celsius and covers water, wastewater, effluent treatment and a broad spread of chemical duties.

• Material: beta-PP-H, stainless steel spring with HALAR (ECTFE) coating
• Connection: metric socket fusion, d16 to d110 (DN10 to DN100)
• Pressure rating: PN10, SDR 11
• Opening pressure: 10 to 80 mbar
• Seals: EPDM or FKM
• Protective cap: PP-GF up to DN50, POM from DN65 to DN100

As an authorised Georg Fischer distributor, BigWeld supplies genuine PROGEF Standard components for industrial piping projects.