Hydromodul Altimetric Control Valve

The valve shall be made according to these specifications:

• high hydrodinamics 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 paiting with 150 micron of minimum guaranteed thickness;
• plunger shaft entirely guided;
• particular plunger disc section and seat against cavitation risk;
• plunger shaft guide independent of seal seat;
• removible standard stainless steel seat, for higher cavitation resistance;
• obstacle free full port;
• neither spoke nor gride 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 exagonal head bolts fastening cover to 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 flow path to avoid further turbulences and clogging;
• stainless steel brass plunger position indicator;
• nylon reinforced Buna-N diaphragm, on request special material diaphragm for petrolchemical use;
• Polyurethane plunger seal disc, or special material for petrolchemical use, on request;
• easy maintenance design and easy access to internal parts without removing the valve from the pipeline;
• possible maintenance intervention on pilot circuit even with 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 serie 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