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 2014/68/EC (PED) for use in equipment category II and fluid group 2 such as steam and non-poisonous, nonflammable gasses. 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
Outlet connection: G3/4 – ISO 228/1
Inlet connection: G3/4 – ISO 228/1 or R3/4 ISO 7/1
Minimum bore: 20 mm
Valve housing and cylinder head of brass CuZn40Pb2 (CW 617 N)
Machined parts of brass CuZn39Pb3 (CW 614N)
Seal and membrane of EPDM.


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