Hydromodul Quick Relief Valve

The valve shall be made according to these specifications:

High hydrodynamics section globe body, without stagnation pockets (low pressure loss type);
Standard ductile cast iron casting GS400/GGG40, carbon steel casting on request;
200°C furnace polyester powder painting with 150 micron of minimum guaranteed thickness;
Plunger shaft entirely guided;
Particular plunger disc section and seat against cavitation risk;
Stainless steel piston actuated, up to 40 bar;
Plunger shaft guide independent of seal seat;
Removable standard stainless steel seat, for higher cavitation resistance;
Obstacle-free full port;
Neither spoke nor grid interposed in closing passage section to reduce maintenance and possible clogging;
Optional V-Port plunger or dissipating cage without valve modification, to dissipate higher pressure and stabilize the valve opening;
Stainless steel hexagonal head bolts fastening cover to the main valve body; bolts protected inside casting;
Silicone bolt sealing on request;
Stainless steel shaft, plunger, and return spring;
Return spring must not be inside the flow path to avoid further turbulences and clogging;
Stainless steel brass plunger position indicator;
Polyurethane plunger seal disc, or special material for petrochemical use, on request;
Easy maintenance design and easy access to internal parts without removing the valve from the pipeline;
Possible maintenance intervention on the pilot circuit even with the operating valve;
Drain plug on valve bottom for total drainage in case of frost;
Main function pressure gauge for pilot calibration included, optional pressure gauge on demand;
Lifting and handling rings obtained directly from casting;
Valve functions can be changed or added by simple pilot circuit modification.

STANDARDS CONFORMITY

Flange to flange: UNI-EN 558-1, DIN 3202 series F1.
Flange drilling: ISO PN16-25-40, on request compatible ANSI 150-300.
Conform to use with water intended for human consumption as DM174/GU166/DE98/83CE.

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