Purpose: valve is a component of pilot-operated safety valves designed to protect the steam generator and steam pipes from pressure surge above maximum allowable level.

Nominal size DN inlet / outlet – 150/200.

Key specifications:

• working medium – steam;
• working pressure P – 13.7 MPa;
• working temperature – + 570°C;
• capacity (at a pressure of 13.7 MPa) – 170 t/h;
• flow coefficient, a – 0.7;
• valve leak tightness class – B, GOST R 54808-2011;
• product weight – 495 kg.

Design service life:

• valve to first overhaul – 5 years;
• body parts – 200,000 hours;
• removable parts – 30,000 hours;
• operating time (life) over 4 years (30,000 hours) – 400 cycles;
• operating time to failure – not less than 200 cycles.