Installation
The valve must be installed in vertical position with the thrust pin
above the disc.
Operation
Automatically operated by service pressure on the disc.
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Application
Safety valve designed to protect pressure
vessels and other pressure equipment against
exceeding specific pressure level for water,
air, non-aggressive liquids and gases for
service pressures and temperatures:
Opening overpressure can be set between
0,1 MPa and 1,6 MPa for all diameters.
Technical description
The valve is of enclosed design with a raising lever for in-service testing of the
valve. Closing disc fits in a seat rolled in the body.
The disc is pressed into the seat by a thrust pin, which is forced
down by a spring. Flow direction in the valve is from under the disc.
Connecting and end-to-end dimensions
End-to-end and connecting dimensions are
given in the table.
Material
Body, cover, top cover
grey cast iron (42 2420)
Disc, guide bush stainless steel (13 Cr)
Seat ring stainless steel (13 Cr)
Spring special steel
Testing
The valve is tested as per ČSN 13 3060, part 2
DIN 3230.
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