Pressure, Rp
up to 20.0 mpa (200 kgf/cm²)
Operating medium temperature
up to 335°c
Housing material
08x18n10t
Operating medium
heat carrier in the circuit, makeup water, bilge water, salt concentrate, oil, nitrogen, steam, feed water for steam generators, blowdown water for steam generators, gas blowdowns in the circuit, feed water, condensate, cooling water for the circuit, radio
Pipeline connection
for welding
Permissible leakage in the gate, cm³/min
dn 25–15; dn 32–18; dn 50–30;dn 80–70; dn 100–120; dn 150–150;
Direction of medium flow
to and under the spool
Valve control
zt96546 — from normally open pneumatic actuator with pneumatic distributor t055.077m; zt96547 — from normally closed pneumatic actuator
Method of signaling
local and remote
Control medium in pneumatic actuators
air temperature from -10 to +60 °C
Control air pressure in the pneumatic actuator Rupr
4.5 MPa (45 kgf/cm²), pressure increase up to 5.5 MPa (55 kgf/cm²) allowed. in emergency mode "large leak" with temperature increase up to 150 °c, air pressure in confined volume increases up to 8 MPa (80 kgf/cm²)
Control air pressure drop, max.
0.01 mpa/h (0.1 kgf/cm²/h)
Control air flow rate for one actuation, not more, m3
zt96546 — 0.04 ; zt96547 — from 0.01 to 0.05
Contamination class of control air
not higher than 7 according to GOST 17433
Opening/closing time
not more than 10 s
Media flow direction
to and under the spool
Classification designation of the valve
2biia, 2biiв according to NP-068-05
Seismic resistance category
i according to np-031-01