EDF non return valves for liquids and gas unidirectional

contacts Viale Europa, 15/b - 36035 Marano Vic.no - Vicenza, Italia
Tel. +39 0445 064002 • Fax +39 0445 560764

YGROS, which in Greek means fluid and flowing, bases itself on the desire to introduce innovation and simplicity to the world of non-return/unidirectional valves.
The YGROS valve is based on the application of an external magnetic field to interrupt the backflow inside a pipe, by means of a shutter.
This innovative idea guarantees a level of sterility which no other classic spring system can reproduce.
As a matter of fact, using a system which excludes and completely substitutes the use of the classic spring, and by consequence any contact with the treated fluids, so total hygiene is guaranteed.
No point of stagnation exists inside the valve body, and the fluids only make contact with material which has high chemical resistance.

The YGROS EDF non-return valve opens whenthe inflow pressure exceeds that of the outflow and magn etic field pressure combined.
The valve closes when the difference in pressure ceases.
A higher backpressure pushes the valve shutter against the seal.
The major difference between a traditional unidirectional spring valve and the innovated YGROS EDF valve is in the resistance which the shutter offers to the passage of the fluid.
While a traditional spring valve, when open, offers the maximum resistance to the fluid, because the spring is at maximum compression, the YGROS EDF valve shutter offers a minimum resistance to the fluid, because it is far from the magnetic field
and therefore has a minimal closing force.

Energy loss/ Energy saving
The YGROS EDF valve allows a very smooth fluid flow
with consequent minimal energy loss.

Laminar flow
All the designed features of the shutter and the valve
body are aimed at optimizing the flow and reducing
turbulence to a minimum.

Hygiene
Only the shutter comes in contact with the fluid while
the valve is working, so there are no points of stagnation.

Chemical corrosion
The YGROS EDF valve components which are in contact
with the fluid are made of stainless steel suited to
the process type, in particular the external body and
the two connecting flanges are in AISI 304 or AISI
316, while the shutter is in DUPLEX: a special inoxidizable
material with ferromagnetic characteristics.

Valves materials

• AISI 304, AISI 316L, DUPLEX

Finishing surfaces

• Internal surfaces Ra<0.8, Ra<0.4
• External surfaces Ra<1.2, Ra<0.8,
blasted with microspheres of glass or
ceramics, electro-polished

Flanges

• Welding DIN 11851 femmina
• Clamp
• Welding Tri clover ASME BPE

O-ring

• EPDM, NBR, FPM (Viton), Silicone, Fep

Technical features

La pressione differenziale per far aprire la valvola installata in una tubazione orizzontale è di 0.05 bar; questa differenza di pressione tende a zero quando la valvola è aperta e quindi durante il funzionamento si avranno perdite di carico quasi nulle.