Safety valves

PRODUCT DESCRIPTION:
Approved safety valves for control of electric, oil, gas, steam and warm water heated pressure vessels, as well as smaller closed warm water plants, dry closed warm water plants and closed non-fired plants, e. g. heat exchangers. The safety valve is made of flat-pressed brass with turning grips of heat-proof plastic, as well as a separation membrane and seal of temperature and age resistant synthetic rubber.

Several of EV's safety valves for low pressure steam, type 43 2217 xxx and 43 2218 9xx, are certified acc. to DS/EN ISO 4126-1 and CE –labeled in accordance with the European Directive 97/23/EC for steam and non-poisonous, nonflammable gases acc. to category II. The certificate is valid for the adjustment pressure 0.75 + 1 + 1.3 and 1.5 bar.
Valves without certificate are delivered for other opening pressure in the area 0.5 - 7 bar.

TECHNICAL DATA:
Max. working temperature: -10 - 130°C
Short-term max. temperature: 185°C
Angling ¾” sleeve – sleeve or nipple-sleeve.
Minimum light: 20 mm
Valve housing and cylinder head of flat-pressed brass CuZn40Pb2 (CW 617 N)
Turning parts of brass CuZn39Pb3 (CW 614N)
Seal and membrane of EPDM (other materials are delivered without certificate)

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