Pressure Retaining Valve 586

Also known as an overflow, safety or backpressure valve, the Type 586 Pressure Retaining Valve works to keep the pressure at the valve inlet constant at all times, thereby ensuring problem-free operation. Made of fully molded, high-grade plastic, this is an intelligent addition to any piping system.

• Dimensions: DN 10-50 (3/8“ – 2“)
• Materials: PVC-U, PVC-C, PP-H, PVDF
• Diaphragm: EPDM/PTFE
• Gaskets: EPDM, FKM
• Connections: Fittings, spigots
• Pressure level (nominal pressure) PN 10
• Adjustable pressure ranges: 0.5 – 9 bar / optional 0.3 – 3 bar (7 – 130 psi / optional 4 – 44 psi)
• Hysteresis: max. 0.5 bar (max. 6 psi)
• Pressure difference Pressure difference between inlet and outlet: min. 1 bar
• Test standard: EN 12266-1, ISO 9393-2 (in accordance)

Advantage

• Keep the pressure at the valve inlet constant at all times
• Prevent backflow into the piping system.
• Made of fully molded, high-grade plastic
• Easy and quick to install thanks to its streamlined, intuitive design
• Low maintenance
• Works for small and large pipe configurations.

Applications

• Construction of chemical facilities
• Construction of industrial facilities
• Water treatment

Function of the pressure relief valve

The desired pressure at the valve inlet is set by means of the adjustable spring resistance. If the inlet pressure rises above the set value, e.g. because the pump capacity is too high, the valve piston rises against the spring resistance.

The valve then opens and the pressure in the outlet line is reduced.
If the pressure drops in the valve supply, the spring resistance pushes the piston downwards in the direction of the valve seat and the valve closes as soon as the inlet pressure is lower than the set spring tension.

This ensures a constant pressure in the inlet line.

Fluids

Líquidos neutros y agresivos técnicamente puros, si los materiales de válvula seleccionados son resistentes a la temperatura de servicio conforme a la lista de resistencia Divatec.