WAFER

Wafer check valve

The one and only springless WAFER check valve

The springless Wafer check valve for water treatment, vacuum and gas applications

Maintenance free. Suitable for horizontal, vertical up and down installation (even in vertical pipes with flow down). Up to +220°C.

Ygros patented technology sets new standards in the world of plant design, thanks to a patented magnetic principle replacing the conventional spring in Non Return Valves.

  • No more springs that can break or misfire.
  • No flow obstructing components.
  • No flicker.
  • No stagnation points.
  • No maintenance needed.

Benefits at a glance

  • No chatter: the magnetic principle is particularly suitable for compressible media (such as gas) or low pressure processes. Very low difference pressure needed to keep the disc fully open.
  • High chemical resistance / longer valve life: due to the 1.4404 (AISI 316 L) / 1.4462 (Duplex) construction
  • Safe closing: provided by integral magnets.
  • Any installation position possible: unlike other springless check valves, YGROS WAFER can be installed in the horizontal, vertical up and down positions.
  • Energy saving (laminar flow): the innovative working principle and design allow for a smooth flow, minimising turbulence and pressure drop
  • Maintenance free

Technical data

Product contact materials

Body: Stainless steel 1.4404 (AISI 316L)
Shutter: 1.4462 (Duplex)

Non product contact materials

Magnet: Neodymium

Seals material options

EPDM, NBR, HNBR, VMQ (Silicone), FKM (Viton), FEP, PTFE

Surface finishes

Internal: Ra ≤1.6 µm
External: Ra ≤3.2 µm

Temperature range

-40°C/+150°C (standard). Up to +220°C (optional)

Operating pressure

PN16 (standard). Further operating pressures on request

Media

Gas, steam, fluids

Certifications (on request)

Material (EN10204-3.1) / Seals (FDA) / Surface roughness
ATEX
EC 1935/2004

All product contact materials and seals are fully traceable

YGROS WAFER: STANDARD OPENING PRESSURES
Table applies to water at 20° C (68°F)

Installation

Flow direction

Opening pressure

HORIZONTAL lines


10/30 mbar

VERTICAL lines

Flow Down

7/27 mbar

VERTICAL lines

Flow Up

13/33 mbar

Once opened, the required pressure to keep the shutter fully open is about 10 mbar

Alternative opening pressure options are available on request.

PRESSURE DROP CHART

Graph reading applies to water at 20° C (68°F) installed in horizontal pipes

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