The valve acts as an automatic regulator of pressure drops and prevents the creation of a vacuum inside pressurised installations or vessels.

Specifications
—Activated by direct action helicoid spring.
—Simplicity of construction ensuring minimum maintenance. .
—Internal body designed to offer favourable flow profile.
—Soft seals giving greater tightness then that required by DIN-3230.
—Sheet 3, as long as the valve, in non operating conditions, is underequal or greater pressure than atmospheric pressure.
—Great discharge capacity.
—All the valves are supplied sealed at the set depressurising requested, simulating operational conditions, and are vigorously tested.
—All components are numbered, registered and checked. If requested in advance, material, casting, test and efficiency certificates will be enclosed with the valve.

VYC industrial Sigurnosni ventil 795.pdf