Supapă de reținere Profec din fontă ductilă cu acoperire epoxidică, DN50, cu flanșă DIN, PN10/16

Profec DN50 Ductile Iron Swing Check Valve with Epoxy Coating — DIN Flange PN10/16

This heavy-duty non-return valve is engineered for reliable backflow prevention in water supply, irrigation mains, pool plant rooms, and industrial pipework. The body and disc are cast from ductile iron GGG40, providing superior impact resistance and tensile strength compared to standard grey cast iron. An internal and external blue epoxy coating guards against corrosion, making the valve equally suitable for potable water systems and chemically mild process lines within its rated temperature range of −20 °C to +100 °C.

The swing-check mechanism operates on a straightforward gravity- and pressure-assisted principle: flow in the permitted direction lifts the disc clear of the seat, while reverse pressure or gravity closes it automatically without any actuator or manual intervention. The NBR rubber-faced disc seats against a carbon/NBR composite seat ring, ensuring a low-cracking pressure of just 1 bar and a tight shut-off up to the 10 bar maximum working pressure. A removable top cover secured by stainless steel bolts allows in-line inspection and seat maintenance without removing the valve from the pipeline.

Specificații

• Nominal diameter: DN50
• Pressure rating: PN10/16
• Maximum working pressure: 10 bar
• Minimum cracking pressure: 1 bar
• Face-to-face length (L): 200 mm
• Flange bolt-circle diameter (PCD): 125 mm
• Flange outer diameter: 165 mm
• Cover height (Ct-1): 108 mm
• Body material: Ductile iron GGG40
• Disc material: Ductile iron GGG40
• Seat ring material: Carbon / NBR composite
• Disc seal material: NBR
• Coating: Blue epoxy (internal and external)
• Connection standard: DIN 2501 DIN flange
• Number of flange bolt holes: 4
• Operating temperature range: −20 °C to +100 °C
• Valve type: Swing check (non-return)
• Cover fasteners: Stainless steel hex bolts
• Drain plug: Brass (fitted at valve body base)
• Colour: Blue

Compatibilitate

The DIN 2501 flanges are fully interchangeable with PN10 and PN16 flanged pipework and fittings in DN50. The four-bolt flange pattern at 125 mm PCD accepts standard M16 flange bolts. The valve is compatible with cold and hot water systems, irrigation mains, pool plant circulation lines, and light industrial pipework conveying fluids compatible with NBR seals and ductile iron, within the stated pressure and temperature limits.