PROGEF Type 562 PP-H Check Valve d20-63 DN15-DN50 PN10

  Datasheet (PDF)

The Georg Fischer (GF Piping Systems) PROGEF Standard Type 562 check valve in dimensions d20 to d63 (DN15 to DN50) provides dependable backflow prevention for industrial water treatment, chemical distribution, and process piping. Manufactured from beta-polypropylene homopolymer (beta-PP-H), this true double union non-return valve is rated for PN10 nominal pressure and engineered for a 25-year operational service life at 20 degrees Celsius. BigWeld supplies these industrial valves across Europe as an authorised Georg Fischer distributor for demanding thermoplastic process installations.

Technical specifications

The PROGEF Type 562 check valve operates via a spring-assisted closing mechanism that provides instant, leak-tight shutoff regardless of mounting position. Its double-guided return cone eliminates valve flutter and turbulence under fluctuating pipeline flow.

Designed with fluid dynamics optimized to minimize head loss, the internal cone ensures smooth passage of aggressive media with minimal pressure drop. The integrated 1.4310 stainless steel spring (V2A) allows mounting in horizontal, vertical, or inclined pipelines without requiring hydrostatic head or counter-pressure to initiate closure.

• Nominal pressure rating: PN10 (10 bar at 20 degrees Celsius)
• Dimensional range: d20 to d63 mm (DN15 to DN50)
• Face-to-face dimension: Standardized according to EN 558-1
• Closing mechanism: Double-guided cone with 1.4310 stainless steel spring
• Elastomeric sealing options: High-performance EPDM or FKM compounds
• Body design: True double union socket fusion configuration

Materials and standards

Manufactured from high-grade beta-polypropylene homopolymer (beta-PP-H), the valve exhibits superior mechanical rigidity and broad chemical resistance against industrial acids, alkalis, and solvents. All pressure-bearing components comply with international quality and manufacturing benchmarks.

The beta-PP-H compound delivers high impact strength and exceptional resistance to internal stress cracking and hydrolytic degradation across elevated operational temperatures. Gasket selections in chemically resilient EPDM or FKM provide dependable sealing integrity matched precisely to the conveyed chemical media. Structural dimensions conform to EN 558-1 standard installation lengths, facilitating streamlined interchangeability within standardized industrial systems.

Installation and jointing

The true double union design enables rapid radial installation and straightforward maintenance without cutting or dismantling adjacent pipe sections. Connection ends are designed for socket fusion jointing directly compatible with PROGEF metric PP-H piping systems.

During installation, pipe ends and valve sockets are heated simultaneously using standard socket fusion equipment to achieve a homogenous, permanent weld. The union nuts allow the valve body to be isolated, inspected, or serviced quickly during plant maintenance cycles, minimizing system downtime. Universal spring actuation guarantees reliable non-return functionality across all piping orientations, supporting vertical upflow, horizontal runs, and compact skid assemblies.